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Full text of "Report on the United States and Mexican boundary survey, made under the direction of the secretary of the Interior"

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REPORT 



UNITED STATES AND MEXICAN BOUNDARY SURVEY, 



TUB DIllECTIOS OF THE SECRETARY OF THE INTERIOB, 



WILLIAM H. EMORY, 

MAJOR FIRST CAVALRY AND UNITED STATES COMMISSIOSErt, 



WAHniNOTON: 
1858. 

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PART II. 



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CONTENTS 0? PART II. 



INTRODUCTOEY CHABTER ON GEOGRAPHICAL DISlltlBUTION AND BOTANICAL FEATUUES. 
REPOllT ON BOTANTR 
EEPOET ON CACTACEJE, 



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INTRODUCTION. 



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ISTllODUCTION. 



. PARRY, M. T>. 



GEOaEAPHICAL DISTRIBUTION. 

Every observing traveller must have noticed how closely the peculiarities of the scenery of a 
country depend upon its vegetable productions. Not only is this true of trees and the larger 
forms of plants, but even the humbler, though apparently insignificant in themselves, have 
their share in producing the general effect. Hence the subject of the geographical distribution 
of plants is one which may command the attention of every intelligent mind, and this depart- 
ment of botany has for many an interest which the higher details of the science do not possess. 

Perhaps no region of equal extent presents more marked illustrations of the relation of the 
vegetation of a country to its topography and geology than those afforded by that lying along 
the Mexican boundary line. 

The usually difScuIt task of constructing a phytological map might here be performed with 
comparative ease, as the observer, little perplexed by a great variety or gradual blending of 
forms, involuntarily associates particular localities with the predominating and characteristic 
vegetable productions. Tims one who has ever traversed the desert table lands of the tipper Eio 
Grande will not fail to unite in his recollection of these tracts the dull foliage of the Creosote 
hush, the long thorny wands of the Fouquieria, the palm-like Yucca, and the crimson-flowered 
and spine-armed Cereus. Still less can any one, who has seen the giant cactus of the Uila in 
its perfection, ever forget the wild and singular features of the country in which it grows. The 
distinctness with which the botanical districts are defined gives an unpleasant sameness to the 
scenery of this country. The extensive plains exhibit a monotonous succession of the same 
forms, and each mountain slope and ravine presents us a collection of plants quite like those 
we have so often seen in other and similar localities. Indeed, the botanist in these regions, 
knowing what to expect in each different situation, soon loses his zeal, and becomes intent upon 
little else than overcoming space. 

"We propose to give a rapid sketch of the features presented by the vegetation of the country, 
especially noticing those plants which predominate in, and give character to, the several districts 
into which we have divided it. 

THE LOWER MARITIME liBLT. 

The flora of this strip of country is too well known to require an account here, had we the 

necessary data for describing its characteristic botanical productions. Its position being 

intermediate between the " tierra caliente" of Mexico and the gulf coast of Louisiana, gives to 

its vegetation a mixed character, partaking of that of the two extremes. Thus, while upon the 

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10 UNITED STATES AND MEXICAN BOUNDARY. 

lower portion of the Eio Grande, we have the sub-tropical character of its vegetation indicated 
by fho presence of the arborescent palms of the " tierra caliente," we have at the same time the 
Texas live-oak, the type of a more northern flora. This region has been more thoroughly 
explored by A. F. Schott, esq., whose observations upon its botany and other natural features 
will be found in a separate memoir. 

UPPER MARITIME BELT. 

To the lower belt, which has an uniform alluvial soil, and is more or less influenced by its 
vicinity to salt water, succeeds rolling prairies, underlaid by cretaceous rocks, which now for 
the first time appear, though more or less hidden from view by a thick layer of erratic and 
alluvial deposits. This division includes, as we have already noticed, the moat habitable parts 
of Texas, through which run the numerous rivers which empty into the Gulf of Mexico. Here 
we find rich cotton lands, and an abundance of trees, including species of oak, hickory, ash, 
elm, walnut, cypress, &c., with an exceedingly rich undergrowth of vines and shrubbery. The 
open prairies are densely covered with luxuriant grasses, and have a rich and varied flora, 
which has been well explored by the early labors of Drummond, and later by those of Linct- 
heimer and "Wright, Upon the southern portion of the Bio Grande, where there is a higher 
temperature, united with greater aridity of the soil, a vegetation of quite a different character 
appears ; we have here the dense growth of "chapparral," which is so peculiar to this region. 
The plants which make up the thick mass of shrubbery known by this name are different 
species of mimosa and acacia, with the welt known mezquit and other forms, most of which are 
armed with hoolted thorns, and make up a jungle which is almost impenetrable. 

The botany of this region is too well known, from various published accounts, to require 
furtlier details in this place, 

VEGETATION OF THE CEETACEOUS FOKMATION. 

As the geological formation becomes more exclusively cretaceous the vegetation assumes a 
peculiar character, and is made up of species which are rarely found elsewhere. The shrubbery 
of this region presents a continuous succession of the same forms, among which are Berberis 
tri/oliolata, BJms mtcraphylla, ForUera angusiifolia, Diospyros Texana, BoeberUnia apinosa, 
AdolpMa infesta, Microrhamnus ericoides, and Acanthoeeltis, a new genus of Engelmann, allied 
to Celtis. Along the margins of the usually dry water courses the dwarf walnut {Juylans 
rupestris) and FaUugia paradoxa are constantly found. 

The perennial herbaceous plants of this district are numerous. The rocky ledges produce in 
their crevices various species of LapTiamia and the scarlet flowered Penislemon Grahamii, Several 
examples of the large tropical family of MalpigUacece are found here, among them Galphimia 
Uni/olia, Aspicarpa Jiyssopifolia, and Janusia gracilis. Cacti are numerous, and include among 
the forms here presented opuntias, mammillarias, and numerous species of ccreus. The curious 
Lycopodium dendroloUum grows upon the perpendicular faces of the limestone rocks. This 
plant commonly called "rock rose," is remarkable for the hygrometric qualities of its fronds, 
which are usually rolled up so that the plant forms a dry ball, which expands under the 
influence of moisture, and then appears fresh and vigorous. Several new species of Cheilanthes, 
Fleris, Notodcena, and other genera of ferns are found here. 



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INTEOBUCTION II 

Upon the rocky ledges a small species of agave grows in atundarice. The low leaves, which 
are pointed with sharp spines, are very troublesome to the foot traveller ; they are, however, 
of some use to the Mexicans, who employ the stronj; fibres they contain in making coarse ropes. 
The plant is known to the people of the country as "Leehaguia." The table lands and valleys 
are usually covered with an abundant growth of " grama grass," and among it are frecLuenfc 
clumps of Dasylirium, or "bear's grass." 

We have here also several interesting species of Nyctagiimceae, belonging to the new genera, 
Adeisa.nihes, Peniacrophis, and Sehuocarpus, lately proposed by Dr. Gray. 

Among the annual plants of this district are several species of MenheUa, Pereaio,, Pedis, 
Hymenatherum, &c., also the pretty Eucnide lobaia, which usually grows in almost inaccessible 
situations upon the perpendicular faces of the limestone ledges. 

There are so many species that seem to be equally abundant that it is difficult to designate 
any as being characteristic of the cretaceous district. 

VEOETATION OF THE HIGHER BASIN PLAIKS AKD THE ADJOINING JIOUNTAIN RIDGES. 

The higher alluvial tracts, forming the basin plains before described, produce a number of 
northern forms of plants, such as species of (Enothera, Gaura, RidddUa, Zinnia, and Polygala. 
We also find here the curious Peganum Mexicanum and Peteria scoparia, the latter a pretty 
plant of the family LeguminoFw. The depressions in this alluvial region are covered with a 
coarse grass, which presents an uniform dead brown color throughout the greater part of the 
year. In the deep recesses and shaded valleys, the vegetation has a freshness unknown to that 
of the plains. In these localities we encounter the upland live oak {Quercus Emoryi, and the 
nut pine, {Pimts eduUs,) and growing beneath these, Vitis iicisa, Clematis Pitckeri, Ungnadia 
spedosa, &c.- The constant presence of water in the larger valleys is marked by the growth of 
cotton wood and willows. 

VEaETATION 01' TBE EL PASO BASIN AND THE UPPER KIO GEASDB VALLEY. 

The vegetation of the immediate valley of the Rio Grande, and that of the country immediately 
adjoining it upon either side, are strikingly different, and whoever passes from the valley, and 
crosses the line of mountains which bounds it to the regions beyond, cannot but remark the 
difference in the landscape, due to the presence of new plants. Upon the table lands which 
spread out beyond the mountain barrier, the eje falls upon a great variety of plants, none of 
wliicli are seen in the more fertile valley. Among these are Fouquieria splendens, La'n-ea 
mexicana, Flourensia cemua, Rhus micropliylla, Condalia obovala, Koeberlinia spinosa, and species 
of Krameria, Ephedra, and Yucca. There the Oad-i flourish in a congenial soil, and we find 
representatives of the genera Opuntia, Eckinocadus, Mammillaria and Cerey^. 

Among the numerous herbaceous and suffruticose plants of these localities we may mention 
Gevallia sinuata, Greggid cainporum, Eriogonum Ahertii, and several species of Dalea ; plants 
of the family Compositae, are especially abundant, and include among others Baileya mtdtira- 
diata, Bahia ahsinthifdlia, Porophyllum scoparium, Psatkyrotta scaposa, Hymenalhemm acerosum, 
Towmendia slrigosa, C'alycoseris Wriyhtii, Stephanomeria minor and Rafitiesquia Neo-mexicana. 

The natural order of Nyctaginaceoi is represented by Selenocarpus chenopodtoides, Boerhaavia 
Wrightii, and others. 

The principal grasses of this region consist of the kinds known as "bunch grass," and 
belong to the genera Chondrosium and Bouteloua. The margin of the table land, where it 



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12 UNITED STATES AND MEXICAN BOUNDARY. 

torders upon the valley is broken by deep ravines, and we find here upon the sandy hlufls a 
growth of chaparral, made up principally of mezqtiit and the equally thorny acacias. In the 
dry pehhly water courses, the willow-leaved Chilopsis linearis frequently occurs. Many of the 
already mentioned plants of the table land are found here, besides others, which are peculiar to 
these localities, such as Ditkyrce ivisli%enii, Abronia melU/era, GUia longifiora, Lepidium 
alyssoides, GaiUardia pinnatifida, Palafoxia Hookeriana and Tetraolea Wrightii, a singular 
genus of Verbenaceae, recently described by Dr. G-ray. In the valley of the Rio Grande we 
frequently find a heavy growth of cotton wood and willows. The " screw bean," Stromhocurpa 
pubescens, often occupies large tracts, accompanied by a dense undergrowth of Bacohai-is salicina. 
The low saline places produce an abundance of Obione canescens, while on the higher ground, 
Tessaria borealis is a common plant. 

A number of coarse composite plants are found in the valley, such as Texmenia enceUoides, 
Coreopsis cardamine/olia and Aster spinosus, the latter often forming dense matted masses of 
considerable extent. 

The roety crevices of the adjoining mountains furnish some of the most interesting plants of 
this region. We here find Fendleria rupicola, Mortonia crassi/oUa, Glossopetalon spinesc&ns, 
Agenia parmfoUa, Bouvardia liirtella, Teeoma stans, Texmenia brevifoUa, &g. 

The higher mountains of the Organ range have a vegetation possessing a somewhat alpine 
character, and bear a scattering growth of pines and oaks, beneath which flourish a number of 
shrubby and herbaceous plants, quite similar to those found upon the more lofty ranges farther 
to the west. 

VE&EIATION OP THE SIGHEA MADaE. 

As we approach the base of the Sierra Madre, passing over the extensive basin-plain 
already described, a gradual increase in the elevation is marked by a disappearance of those 
plants, which were common lower down, and the presence of others wearing a more alpine 
aspect. The surface is less bare than upon the plain below, and is covered with a closely matted 
grass, which gives a singularly rounded outline to the undulating land around the base of the 
mountain. Along the lower rocky swells grows the beautiful Carphockete Bigelovii, with 
Anemone CaroUniano,, Streptanthv-s linearifoUus, Pentstemon Torreyi and Fendleri are among 
the characteristic plants of these localities. There are but few shrubby plants, several species 
ai Ephedra being among the most conspicuous. The streams are bordered by Fraxinus velutinus 
and Juglans rupestris, (the large variety,) and in moist places an old Californian acquaintance, 
Anemiopsis Californica makes its appearance. 

Upon the mountains oaks and pines are found, mostly Quercus Emoryi and Finns edulis, 
though in certain localities there is larger timber, consisting of Pinus OhihuaJmana and Abies 
Douglasii. The smaller woody growth here includes several species belonging to the Californian 
mountain flora, such as Cercocarpus parvifoUus and Arctostaphylos iomentosus. 

Upon the summit of Ben More, further to the north, Dr. Bigelow discovered many plants 
indicative of an alpine flora, among these were Frasera speciosa, llubus Neo-mexioanus, Actinella 
Richardsonii, and, perhaps, most remarkable of all, a small fern, Asplenium septentrionale, an 
European species not before detected on this continent. 

The abrupt descent through Guadaloupe pass, upon the western slope of the ridge, presents 
a profusion of evergreen shrubs and flowering plants, including most of those which occur on 



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INTJIODUCTIOX. 13 

the summit ridge. Live oaks grow upon the rocky sides of the ravines, and with them is 
frequently associated a speciea of cedar. Among the more interesting of the herhaceous plants 
found here, are Dryopetahn runcinatum, Vesicaricc, and Oolomiui. The narrow valley of the 
stream which runs through the hottom of the Pass is wooded with ash, cotton wootl, and Mexican 
sycamore. 

VEQKCATION OF Tlil! Uri'ER VALLEYS OP SAN BERNAttINO, SAN PEDRO, AM3 SANTA CIi.CZ IVITII THAT OE 
TnE ADJOIHISO MOIINTAIS RANfiES. 

The country emliraced in the above limits, includes that portion of Northern Sonora, 
which divides the waters which flow north towards the Gila river from those whoso course is 
south, towards the Gulf of California, It is, as we have before stated, diversified with high 
wooded mountains and upland plains, well watered valleys and dry and barren tracts. The 
arborescent growth is not essentially different from that wo have noticed in speaking of the 
other divisions of wuntry. Live oaks, the nut pine, cedar, ash, walnut and cotton wood are 
produced either upon the mountains or in the upland valleys. Its plains are covered with an 
uniform growth of upland grama grass, or in the more arid localities by mezijuit and its thorny 
associates. This region furnishes a number of singular and highly interesting genera and 
species, most of which are described by Dr. Gray, in the second part of "Plantae Wrightiana^, " 
in the Smithsonian Contributions. A reference to this work will give a better idea of the 
character and distribution of the flora of this district than our limits will allow us. As it 
occupies a station between several botanical divisions, so its flora partakes of that of those 
regions. The following list of some of the plants found here will be seen to embrace species 
belonging to California, Texas, Mexico, and New Mexico, via : Eaclischoltda douglasii, 
Zauschneria Cali/omica, Eulobus OaU/ornicus, Boivlesia tenera, Anemone GarcUniana, Draha 
caroliniana, Gorydalis aurea, ^ndrosace occidentalism Itutosma texana, Erodium texanum, 
Layia Neo-mextcana, Cowania Mexicana. 

VEGETATION OP TIIS LOWER SANTA CRUZ VALLEY, THE DESERT OE TUCSON, AND THE CE:^iTRAL VALLEY 
OP TUB (JILA. 

The region defined as ahove constitutes a very distinct botanical district, many of its peculiar 
plants not being found elsewhere. As we have mentioned in a previous sketch, the valley of the 
Santa Cruz, as it leaves the mountains in its northward course towards the Gila, gradually 
looses its fertile character, and finally terminates in the desert plain which forms the table land 
of the Gila. The vegetation of this tract comprises many of the forms which are found on all 
the barren plains of the country. Here, as in similar situations elsewhere, the mezquit and 
the creosote bush are conspicuous. Cacti are abundant here, and of various types. There are 
the low arborescent Opuntias, generally bearing proliferous fruit, as well as several elliptical- 
sfemmed species. The enormous Echinocactus loisUzenii and Caespitose mammillarms and Gerei 



are common, while, either standing sob 
towers above all. A species of misletoe 
The sheltered crevices of the neighhori 



tary or collected in groups, the lofty Cereus giganteus 
common upon the mezquit trees of this region, 
ng mountains produce a species of agave, and in these 



localities we find Eranseria delioidea, Encelia farinosa, and Ferityle nuda. 



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14 UNITED STATES AXD MEXICAN BOUNDARY, 

After the occurrence of rains tlie open plans are carpeted by a profusion of bright colored 
evanescent annuals, among the most conspieiious of which are Vesicaria, EscIiselioUzia Dougla&ii. 

A scanty growth of annual grama grass grows beneath the ever abundant Larrea, and the 
more alluvial portions of the tract are occupied by Obione canescens. In the deep cracks of the 
smooth washed surface Boiolesia tenera and sorae species of HbsacMa are found. Near the 
immediate valley of the Gila we encounter species of (Unothera, Sinisia, Gaillardia, and 
Oligotneris glauoescens. 

The valley of the Gila has many features in common with that of the Rio Grande, and 
among the botanical productions common to both valleys we notice Tessaria horealis and 
mezc[uite, which latter forms dense " chaparral." The trees bordering the stream are mostly 
cotton wood and willow. 

VEGETATION OE THE HIO GRANDE, CANONS, ASD THE CONNECTED BASINS, 

The flora of the canons of the Eio Grande differs but little from that of the mountain ravines 
we have already alluded to. We find stunted shrubs rooted in the crevices of the rocks or 
scattered along the broken summits. The abrupt walls, whether of limestone or of igneous 
rock, afford favorable places for the growth of such plants as affect inaccessible localities. Here 
we meet two species of the well characterized genus Laphamia, viz ; L. dissecla and L. bisetosa ; 
also Perityle aglossa and L. Parryi, the pretty Eucnide lobata, Coioania ericifolia, and emoryi, a 
new genus of the order Scroplmlariacets, dedicated to Major Emory. 

In open places the vegetation peculiar to table lands makes its appearance. 

In the more extensive basin of Presidio del Norte the flora partakes of the character of that 
of Mexico, and more tropical forms prevail. We find here Kallstroemia cjrandijlora, Martynia 
violacea, M. armaria, Talinopsisfruiescens, NioolettiaEdicardsii, and several species oi Boerhaavia. 
Cereus Greggii is quite common, and the delicious fruited Cereus stramineus grows in its greatest 
pertection. 

All the basins and canons within these limits present a similar vegetation to the one just 
noticed. 

In the Chisos basin a remarkable shrubby plant, allied to Scuiellaria, was discovered. This 
Dr. Torrey has described as Salimria, a new genus of the order Lahiatcn. It has a straggling 
habit, and grows along the gravelly margins of dry water courses. The Sierra Carmel, upon 
the summits of which we should expect to meet with many botanical novelties, was passed, in 
a necessarily hurried march, in the month of November, Under these circumstances but little 
information could be obtained respecting its flora. Live oaks and the nut pine grew upon the 
higher ridges, and its upland plain.^ and valleys were covered with luxuriant grama grass. The 
beautiful Santa Eosa valley is marked by the most attractive scenery. Its broad and fertile 
plains, with copious streams, bordered by gigantic cypress, sycamore, and pecan trees, with a 
back ground of high mountains, form a landscape upon which the traveller, wearied by the 
monotony of the sterile table lands, gazes with the keenest enjoyment. 

From this point, on approaching the lower course of the Rio Grande, lying to the southwest, 
there is a sudden transition to the forms of vegetation before alluded to as characterizing this 
arid and thorn beset district. 



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IKTKODUCTTOK. 



lGbiccltural capacities, 



"We have attempted to give a sketcli of the external features and spontaneous vegetation of 
the region of country along the United States and Mexican boundary line. It now remains to 
notice its adaptation to agriculture, and onr remarks regarding this may all be embraced in one 
general conclusion. 

Wherever the supply of water ia constant, and sufficient fcr the purposes of irrigation, or 
■wherever the regular overflow of the rivers can be relied upon to supply the amount of moisture 
required for the growth of crops, independently of the rains, in those places, and in those only, 
can agriculture be pursued with success. 

The portions of the country best suited to cultivation are those which are capable of irrigation. 
For these the supply of water is obtained, not only from the larger rivers, as the Eio Grande 
and G-ila, in which the head of water is increased by the construction of dams, but springs and 
small water courses, tliese often lying in mountainous situations, are laid under tribute. 

In the course of the preceding sketch we have noticed the fact that the lower portions of the 
numerous valleys are of a sterile and unproductive character, for the reason that the water of 
the streams is absorbed before it reaches the portions which lie farther below, where, instead of 
a running stream, we only find a sandy bed, with the adjoining region unfit for the purposes of 
cultivation. 

Those places which are supplied with the necessary moisture by the overflow of the rivers 
have a still more precarious dependence than those where irrigation is practiced. In these the 
quantity of water cannot be regulated, and they are exposed to the two extremes of scarcity or 
superabundance. One of the best examples of this system of cultivation is seen at Presidio 
del Norte, where the Concho unites with the Eio Grande. As these two rivers have different 
periods of high water the inhabitants are enabled to frequently secure two crops from the same 
fields in one season. In order to accomplish this the first crop, depending upon the overflow of 
the Rio Grande, must be sown and harvested in time to admit of the planting of the second 
crop, depending upon the later rise of the Concho. All this depends upon so many contingent 
circumstances that it is oftener attended by disappointment than by success, and, between the 
extremes of flood and drought, the people frequently suffer for want of food. 

We have already noticed that a large extent of country, though destitute of streams to supply 
the water required in cultivation, receives from the atmosphere and clouds, in the form of dew 
and rain, sufficient moisture to permit the growth of the richest pasturage, and we have large 
districts of unequalled grazing lands, so broad and so abounding in herbage as to compensate 
for their deficiencies in other respects. Here the buffalo and antelope have already given place 
to wild cattle and horses, and we look for the time when these shall yield in their turn to 
domesticated flocks and herds, denoting that nomadic barbarism has been supplanted by 
civilization, with its ameliorating influences. 

Many large tracts of this country must ever remain as deserts, being alike destitute of 
vegetable and mineral resources ; hut even these otherwise valueless regions are the very portions 
which present the fewest impediments to travelling, and, indeed, form natural highways to 
otherwise inaccessible parts of the country. 

Other facts connected with this part of the subject, as regards character of climate and general 



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lb UNITED STATES AND MEXICAN BOUNDARY. 

habitable condition of different sections of the country, will he dwelt on hy others, or may he 
left to inference from what has heen already noted. 

BOTANICAL FEATURES. 
The general hotanical features of the region under examination next claim our attention, 
and in elucidating them, we shall he guided hy the great natural divisions of country already 
indicated, aa these furnish us plain lines of demarcation for separate hotanical districts. Thus, 
there is a group of plants growing in the immediate vicinity of the sea, and which characterize 
the Littoral Begian; above these, and confined more or less closely to the base of the mountains, 
is found another group indicating the Supra-Littoral Region; next to this, in the ascending 
order, is what may he termed the Lower Mountain Region, with a still different vegetation ; and 
lastly, the Proper Mountain Region, producing plants peculiar to elevated localities. 

LITTOEAL PLANTS. 

Among the exclusively littoral plants, some are common to the seacoast of nearly all 
countries ; and these, such as the common Salicorma, are found here, and it is our intention to 
notice only those which are peculiar to this particular coast. We mention, first of all, two 
species of Abronia, {A. arenaria and A. umhellata,) which spread their trailing branches over 
the sand dunes which edge the sea-shore, and with their abundant foliage and beautiful 
umbelled flowers, give relief to the barren features of the landscape. 

Growing with the Ahronias a species of ice-plant {Mesemlryantkemum) is frequently found. 
This has spreading succulent stems and triangular leaves. Its showy, though evanescent, pink 
flowers appear only in bright sun-light, and are succeeded by an edible, juicy fruit. In the 
same region, though less closely conflned to the sea-beach, is another species of this genus, 
probably identical with the well known M. crystallinum. Here it is an annual, attaining its full 
size in the month of June, when it may be scon in large patches several rods in extent, pre- 
senting a thick bed of showy flowers. The leaves and stems are beset with shining glandular 
little warts, which contain a strongly saline fluid. The flowers, which are ephemeral and very 
abundant, appear in regular succession from June to August. After the flowering period the 
plant witJiers and dries up, leaving a thick mat of seed vessels, which remain closed until the 
commencement of the rainy season ; the hygrometric tissue of the capsule then expands, under 
the influence of moisture, and the enclosed seeds escape and commence germinating. The dry 
remains of the plant are frequently burned for the sake of the ashes, which, being strongly 
alkaline, are used in making soap. Both the species here mentioned are so characteristic of the 
places they occupy that they would seem to be indigenous, but it is generally thought hy 
botanists that they are introduced. 

Among other plants characteristic of this region are GUnothera viridescens, (Hook.,) Franseria 
hipinnatifida, and a species of Slatice, which grows near the head of San Diego bay, and seems 
hardly distinct from S. Limonium. 

The common Salicorma here acquires a shrubby growth, and is frequently entwined with a 
species of Dodder, and accompanying it is found a new species of Batis, to which Dr. Torrey 
has given the name of .B. Californica. Frankenia grandifolia grows here abundantly, associated 
with Layia camosa, Aromia tenui/oUa, and TucJcermannia. Among the shrubs peculiar to this 



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INTRODUCTION. 17 

region may be noticed Slypliania serrata^ with ita tliiclc evergreen leaves and Obiove canescem 
wliicli is very abundant. A species of Lydum, with yelloiv flowers and red berries, is also 
conspiciions. This brief enumeration will serve to give a general idea of the charaeleristio' 
vegetation of what we have termed the Littor.al Region. 

SUrRA-LITTOEAL REGION. 
Leaving the salt water, to the influence of which the characteristics of the preceding region 
are due, we come to the Supra-Littoral district, which presents a more striking variety in its 
vegetable forms. 

This region includes a large proportion of shrubbery, to which, as it imparts peculiar features 
to the scenery, we shall especially direct our attention. 

Before enumerating the plants which make up this woody growth, we would remark, that 
nearly all the shrubs of this region are inclined to form a stunted and bushy growth, which is 
evidently caused by exposure to dry seasons and sea breezes. There is also to be noted a leaden 
color of foliage, which does not depend upon the abundant growth of Artemisia, most of which 
possess this tint, but is common to a large proportion of the shrubs of this region. Both of 
these peculiarities of the vegetation have their influence upon the character of the landscape. 

One of the most striking shrubs is Eriogonum faKicuMum, a neat evergreen, with small pink 
flowers, disposed in crowded umbels at the summit of prolonged stalks. Its season of flowering 
is during the midsummer, and it is generally characteristic of arid and barren tracts. Inme-Z 
arhorea (Nutt.) is frequenily associated with this plant, and is distinguished by its yellow flowers 
and singular bladder-shaped pods. Here is also found Mima aromalica, (Nutt.,) which frequently 
acquires quite an arborescent growth and oeoupies extensive tracts. It is clothed with shining 
evergreen leaves, which resemble those of the holly and exhale a strong odor like that of laurel. 
We also meet with Photinia arhMifolia, a handsome and often symmetrically formed shrub. 
This has rieh evergreen foliage and beautiful bunches of white flowers, which are succeeded by 
scarlet berries. In favorable localities this sometimes attains the height of twenty feet, with a 
trunk six inches in diameter at the base. Another shrub deserving especial notice is Simimmima 
mli/omica, (Nutt.,) which has persistent leaves of a pale green color, and inclined to assume a 
vertical position. The plant is dioecious ; the mature fruit is about the size of a hazel nut, and 
has a thin smooth three-valved husk, which separates spontaneously when ripe, disclosim^ a 
brown triangular kernel. This fruit, though edible, can hardly be termed palatable ; its tlste 
IS somewhat intermediate between that of the filbert and acorn. It is, however, employed by 
the Indians as an article of diet, and is called !>y them "jajoba," The range of the Simmmdda 
extends to the base of the mountains, and it is found again, in similar situations, upon the 
eastern side, though less abundantly, as well as in the upper valley of the Gila, where it.was 
detected by Major Emory, in 1846. Besides the shrubs above enumerated, the Artemida 
Oali/mica is widely diffused over this region ; this is employed by the Mexican, as a popular 
remedy against cholera, under the name of " EsLafiat." 

On the San Diego promontory there is a dense and intricate growth of shrubbery, to which 
both the people from the town and from the shipping have for a long time resorted for fuel. 
The greater proportion is furnished by Erialictyon, which is a large shrub of from eight to 
twelve feet in height, with a diameter of from two to four inches. The wood is very close- 
, but brittle, and is charged with a resinous matter, which causes it to burn readily, even 



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18 UNITED STATES AND MEXICAN BOUNDAET. 

when green. In this locality are also found the beautiful Oeanothus rigzdus, Pitavia damosa, 
Adenostoma fasciculata, and a species of scrub oak, all forming dense thickets. 

We must not omit to mention the CactacecG, which here present species of all the extra 
tropical genera, as remarked \>j Dr. Engelraann in his memoir upon this family. These plants, 
from their Htriking and singular forma, impart a characteristic feature to the region they inhabit. 

A new species of pine is peculiar to the district now under consideration. It occupies an arid 
tract near the ocean beach, about twelve miles north of San Diego, at the entrance to Solidad 
valley. In this locality (the only one in which it has been found) it forms a small sized tree, 
with rather open foliage. It is particularly distinguished by its long fascicles of leaves, which 
are in fives, and its large ponderous cones. This species, the specific characters of which will be 
found more fully described in the following list, I have ventured to designate, in compliment to 
a distinguished American botanist, as Pinus Torreyana. 

Along the borders of the streams which traverse this Supra-Littoral district are found the 
common cotton-wood, {Populua angustata,) the flalanus Mexicanus, and, in the lower portion of 
the San Luis Eey valley, an Alnus ; tliese, with various species of willow, make up the proper 
timber growth of this region. The undergrowth in these localities consists mainly of coarse 
representatives of the order Oomposiice, conspicuous among which arc several shrubby species of 
Baccharis. In moist places Anemiopsts Cali/ornica is frequently met with, and where the soil is 
rich the surface is covered by a rank growth of wild mustard (Sinapis nigra) and mallows, 
{Malva obima.') 

The herbaceous and annual plants of this region are so numerous that we can only allude to 
a few of the more striking and characteristic. 

It is in the latter part of winter and during the earlier spring months that California puts on 
her richest floral garb. Then the arid hills assume an aspect far different from their desert-like 
summer appearance. In February the moistened ground becomes arrayed in an assemblage of 
varied tints. The pale blossom of the elegant Dodecatlieon integrifolium nod on every hill side 
blue Lupines and rainbow colored Gilias deck the ground, and various ferns and mosses appear. 
The Ribes speciosum hangs its scarlet pendants, and the rich yellow flowers of Viola pedunculata 
are abundant everywhere. Even the numerous northern genus Saxi/raga is represented here 
by more than one species. A large number of SydrophyUacece, including species of Nemophilai 
PhaceUa, and Euloca, are among the early tokens of spring, while the orange colored flowers of 
Eachdltzia, the pale blooms of Platystemon, and tlie pink ones of Meconopsis, show that the 
poppy family contribute largely to make up the vernal flora. Among the twiners are a species 
of Cleinatis that is either new or a variety of 0. pauciflm-a and MegarrJiha Cali/ornica of Torrey ; 
the latter plant, which hangs its prickly burs from almost every bush, is remarkable for the 
enormous size of its root. Further to the north the valleys are clothed with a luxuriant growth 
of wild oats, (Avena /alua,) which is so extensively naturalized that it gives to every fertile 
tract the appearance of a cultivated field. The wide plains that border the sea in the neigh- 
borhood of Los Angeles are covered with the richest pasturage. The Erodimn cicutarium, 
(called here "pin grass," and furnishing a highly esteemed fodder,) with several species of wild 
clover, {Trifolium and Medicago,) are mingled with a variety of other herbage, and thus serve to 
give a raeadow-like aspect to this teeming land. Such is the general appearance of the country 
from February to April, inclusive, and then is to be seen the glory of the Californian flora. 



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INTRODUCTION. 



THE LOWER MOTISTAIS REOIOS. 



As we begin to enter the mountain range we come upon what we have termed the Lower 
Mountain Region, the intervening slope between the base of the mountain and the summit ridge. 
Here the species of plants last considered disappear, and are replaced by an almost entirely dif- 
ferent assemblage of vegetable forms. 

The Adenostoma fasctculaia, which we have before ■ alluded to, is frequently found covering 
entire hills. This plant is not peculiar to this region, but grows on all exposed situations, from 
the lowest to the most elevated. It has fine and thickly set dark green foliage, and forms a 
conspicuous feature in the landscape. From its habit of growth it may be considered as the heath 
of this country, though it belongs to a different family, that of the Itosaceoi. 

As the Artemesias disappear, scrub oaks show themselves on the steeper mountain slopes ; 
and, as the valleys become narrower and more rocky, we find the California live-oak (Qaercus 
agri/oUa.) This forms a large spreading tree, the holly-like evergreen foliage of which adds 
to the beauty of the mountain scenery. In the more northern sections of the country this oak 
is met with in the vicinity of the sea ; but as far south as San Diego it grows upon the moun- 
tain slopes only, and its presence denotes a considerable elevation. It is usually of stocky 
growth and unwieldy shape. Its wood is coarse grained and liable to speedy decay ; hence it is 
but little esteemed for its timber. It has, however, a very thick bark, which will, no doubt, in 
time, be found of great value as a tanning material. 

Among the shrubs of this region which deserve notice is Arclosiaphyhs tomentosa. This 
species is said to form cLuite a good sized tree at the north ; but in the district at present under 
consideration it occurs only as a shrub, rarely attaining the height of fifteen feet and a diameter 
of from two to four inches at the base. It is a handsome evergreen bush, sending off numerous 
branches close to the ground. Its bark is smooth, of a reddish -color, and splits off in trans- 
verse shreds. The wood, which is very close grained and durable, is an excellent material for 
small turning work. It bears a small red berry, resembling our well known "bear berry," 
though less astringent, which possesses acid properties, and, under the name of ManmuUa, 
(" little apple,") is in common use as an ingredient of cooling drinks. 

Another plant belonging to this region is Oerasus ilidfoUus (" wild plum.") This is also an 
evergreen, and has thick pale green spinously serrate leaves. Its fruit, when mature, is of a 
yellowish pink color, with a pulpy external portion scarcely exceeding a line in thickness. 
Though the fruit has a pleasant taste, it would scarcely be considered worth eating in a country 
which was not, like this, almost destitute of wild fruits. 

The scrub oaks growing here are all evergreen, with rigid coriaceous repandly toothed leaves, 
which are very variable in size and shape, even in the same individual. The fruit of all the 
species is of about the medium size and form, and is collected in large q^uantities by the Indians 
who use it in preparing their favorite article of food, which they call " Atole." 

Oercocarpus parm/olius is another characteristic plant of this region, and is remarkable for its 
long, spirally-tailed seeds. It is quite a handsome shrub, growing in clamps, and throws up 
wand-like branches to the height of five or ten feet. This is pretty exclusively confined to the 
higher elevations, and even reaches to the summit ridge. 

We notice, also, as an inhabitant of these localities, Fmngula Californica, Gray, {Ithamnus 



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20 UNITED SiTATES AND MEXICAN BOUNDAEY- 

tomenieUitSf Benth. PI. Hartweg,) a species which appears to have a wide geographical range. 
Mr, Hartweg's specimens were collected among the mountaina of the Sacramento valley, and 
we have seen others which were found hy Dr. A, Eandall near the head waters of the 
Grila river. 

In the more southern portions of this district, and growing very abundantly in the vicinity 
of the boundary line, vf e^nd the ^^retty AdenoslGmasparsi/olia, (Torr. in Emory's report.) This 
grows more plentifully among the mountains than the already mentioned .ii./ascicM^a/ct, though 
the two agree closely in habit and are frequently found side by side. It grows in clumps, 
formed of numerous slender branches, and attains a height of four or eight feet. The upper 
part of each branch divides near the summit into a fine spray, clothed with yellowish green 
leaves, and, in the proper season, thickly set with small white flowers. The leaves and upper 
stems are covered with a glandular varnish, which exhales a pleasant aroma resembling that 
of Aspidium fragrans. 

Other shrubs that may he noticed as characteristic of this region are the Eriodyction Califor- 
nicum and. Gkamcebaiia foliohsa, (Benth.;) the latter recently figured by Torrey in Plantae 
Fremontianae, in the Smithsonian Contributions, The shrubbery of this district is raarlted 
by a very intricate mode of growth, especially that upon the Coast Eange of mountains. 
Here, so densely interwoven is the close mass of stunted bushes, that it is nearly impossible to 
force one's way either up or down the mountain sides. 

This region furnishes a large variety of herbaceous plants. The greater number of those 
which, in the accompanying list, are reierred to the "Mountains east of San Diego," have their 
localities in this district. Among the crevices of rocks grow several species of ferns, of the 
genera Aspidium, Gymnogramma, Cryptogramma, Adiantum, Woodicardia, &c. Mosses are 
rare, and but few lichens are observed ; among the latter are the singular Eamalina Menxiesti, 
Taylor, {R. retiformis, Menzics,) and species oi Parmelia, Boocella, a,nd Evernia. 

TUG PROPER MOOHTAIN REGION. 

The immediate summit ridge, which is elevated to a height of from 3,000 to 5,000 feet above 
the sea, bears a rather meagre fringe of pines and other trees of the same family. This im- 
parts a peculiar feature to the landscape, and recalls to mind the snows and wintry climate of 
high latitudes. Of the genns Pinus proper we find four species, some of them being dwarfed 
representatives of tliose forest monarchs which are so abundant and conspicuous further to the 
north. 

In this region we encounter, though rarely, the majestic Pinus Lamhertiana, with its enormous 
drooping cones, P. Sahintana is more abundant. This species is remarkable for its singular 
fruit, each scale of which is tipped with a hard curved spine. The size and shape of this fruit 
are much like that of the pine apple. 

Another species, P. deflexa, (Torr.,) has a trunk of elegant columnar form, and frequently 
attains to majestic proportions, even in these unfavorable situations. The fourth species is a 
nut-pine, and is described by Dr. Torrey in the accompanying enumeration as Pinus Llavmna. 

This species is somewhat isolated in habit, and, as far as we have ascertained, has a very 
limited range near the dividing ridge and south of the boundary line. In the character of its 
fruit and tbliage this species is closely allied to Pinus monophylla, (Torr,,) though quite dis- 



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INTRODUCTION. 21 

tinct. It has a very compact, symmetrical form. The young individuals present a regularly 
oval mass of foliage, which, reaching the ground, completely conceals the stem and tranches. 
Older plants attain a height of from 25 to 40 feet, and show a short trunk which supports a 
rounded head. This species hears an edible nut, which is collected by the Indians as an article 
of food. 

Besides the pines, the other Comferoi are Ahits Dougladi and Thuja occidentalis. 

We always find upland oaks associated with the pine growth of this region. These include 
the common Quercus agnfolia and Q. densijhra, the latter species being the more common upon 
the higher ridges. It is of stocky habit, and has wide-spreading branches, which form large 
spherical heads. The bark of this tree appears like that of the elm, and the wood is close- 
grained and durable. 

There is another oak, which has deciduous leaves, the two preceding being evergreens. It 
seems to be closely allied to or identical with Q. imctoria. Of this species there are two varie- 
ties which are only distinguishable by the fruit, which in one has a large and prominent 
gland, while in the other the gland is almost concealed by the cup— characters which seem to be 
constant in the same individuals. 

The shrubbery of this region presents but little variety, and consists mostly of species which 
have been enumerated as belonging to the Lower Mountain district. 

We naturally expect to find here the undergrowth which, in all countries, accompanies the 
pine forest. Here, indeed, grows the woodland strawberry, {Fragana vesca,) while liliaceous 
plants are represented by Gydobothra alba; we also meet with Viola lobata, a recently described 
species of Bentham. But of Orckidacece, so' common elsewhere in such localities, we have only 
a solitary species of Platanthera. Curices are sparsely distributed, and PoieniUla, so common 
in northern latitudes, has a place in our catalogue. The well-watered valleys are covered with 
a fine sward of native grasses, and lichens of sparkling yellow decorate the decaying pines. 

VKiETATION" OP THE EASTERN SLOPE OP THE MOUHTAINS, THE DESERT, AHD THE BASTN OP THE COLORADO. 

The features which vegetation presents, within the limits of this section, may he best de- 
scribed by noticing those which would naturally attract the attention of the traveller. The 
vegetation of the summit ridge differs but little upon its eastern and western side ; but as we 
go further down the abrupt eastern descent a new group of plants comes into view, one which 
presents a marked contrast to that occupying the corresponding Lower Mountain region of the 
Pacific side. Here thorny shrubs and stiff-stalked plants of strange aspect meet the eye. The 
ashen colored mountains, which in the distance seem entirely destitute of vegetation, produce in 
their rocky canons and crevices a great variety of singular forms. Cacti again appear, and, 
except in one or two instances, are all different from those found on the Pacific slope. There 
are several Opuntias, both those with cylindrical and those with elliptical stems. The gigantic 
EcJdnocactua cylindraceiw lifts its bristling trunk from the clefts of the rock, and the humbler 
mamillaries are also met with. A new species of Gereus (G. Engdmannii) grows in these locali- 
ties, and bears a deliciously palatable fruit. 

On the upland plains, near the edge of the desert, we find a beautiful shrub with willow-like 
foliage and trumpet-shaped flowers. This showy plant is Chilopsis linearis. Here we also 
encounter a species of Krameria, having long and spiny branches and deep purple flowers, and 



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a USITED STATES AND MEXICAN BOUNDARY. 

new Tthumnaceous shrub {Zizyphus Parryi, Torr.) makes its appearance. Upon the hill sides 
here grows a species oi Agave, the " Mezcal" of this region. The root of this, when prepared 
by akind of underground roasting, serves as an important article of food for the Indians. Here 
we also find the "Spanish Bayonet," a species of yucca, which presents its spine-armed leaves 
to the traveller, As we proceed, the lower valleys assume a complete desert-like character. The 
"creosote bush" (^Larrea Mexicana) makes its first appearance, to be our constant companion 
for the remainder of the journey. Perhaps the most striking plant of these wastes is the 
Fouquieria splendens. . This grows in clumps, consisting of from twelve to twenty long wand- 
like branches, which, springing from the main stem close to the ground, rise to the height of 
from ten to fifteen feet ; the stems are beset with rows of spines, from the axils of which grow 
small fasaicies of leaves. Its bright scarlet flowers only appear at the time when the stalk 
is destitute of leaves, and hence the whole plant has too naked an appearance to exhibit much 
beauty. 

The well-known mezc[uite, {Algarobia glandulosa,) which we shall notice more particularly 
hereafter, now becomes a common shrub ; and near the base of the mountains a species of pal- 
metto is seen growing in the clefts of the rocks. Its appearance in these localities invariably 
indicates the presence of water, though this is frec[uently found to be too saline for use. 

As we advance upon the desert plain a very distinct character of vegetation presents itself. On 
all the gravelly ridges near the mountains we find the stiff stalks of Fouquieria. In the fur- 
rowed rain-water courses there is usually a growth of shrubbery larger than in other portions 
of the desert. In such situations a small tree of graceful outline occurs — the Dalea spinescens, 
(G-ray, PI, Thurb.) The finely divided branches of this plant are all terminated by sharp 
points, and are covered with a silvery pubescence, ' It bears a few abortive leaves, and an abund- 
ance of bright blue flowers. Further on in the desert the vegetation is chiefly composed of 
Larrea mexicana and Obione canescens. Near the borders of the lakes and gullies which mark 
the position of " New river" we find a greater variety among the plants, A very rank growth 
of a species of Amaranthus borders the lakes in wet seasons, and on the upper clay borders of 
"New river," The annual " Gramma grass" yields, after the rains or the overflows of the 
rivers, a rapid growth of evanescent but highly nutritious fodder. We And in these situations 
a species of Boerkavia and one of Kallstroemia. The mezquite trees near these places attain 
a considerable size, and frequently bear upon their branches a vigorous growth of a peculiar 
misletoe. 

As we descend from the table land of the desert, by the steep bluff whicli hounds the alluvial 
bottoms of the Colorado river, the vegetation consists almost entirely of dense thickets of mez- 
quite, but it assumes a more varied character when we reach the alluvial tracts. On all places 
liable to overflow tho cotton-wood and willow abound, the latter forming a thicket along the imme- 
diate margin of the river. The higher grounds near the river seem especially favorable for the 
mezquite, and we find it growing with greater luxuriance than we have seen it elsewhere. In 
some situations it forms thorny and impervious thickets, but it is usually sufficiently scattered 
to permit an easy passage for man or beast. The irregular growth of this tree renders it unfit 
for most of the uses for which timber is needed. As an article of fuel it is scarcely inferior to 
hickory, and the wood is very durable. The fruit of the mezquite is of the greatest value to the 
traveller in these regions. It is a long bean-shaped pod, which is greedily devoured by cattle 
and is found to he highly nutritious. A gum exudes from this tree which closely resembles 
gum arable in its chemical characters. The production of the gum is evidently increased by 



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INTRODUCTION. 23 

ade at certain seasons of the year, and especially by the proximity of fire ; facts which 
may be turned to account if the gam should ever he collected as an article of commerce. 
Growing with tjie mezqmte, though preferring a moister soil, is the Stromhocarpa puhescens, or 
" screw bean," as it is called, on account of the twisted form of its pods. It is .usually of small 
growth, and is rarer than the mezquite. The fruit is also usi.'d as food for animals, hut is less 
valuable than that of the mezquite. 

The principal undergrowth consists of Tessaria horealis, a shrubby composita, which grows 
upon light dry soil in thick masses. Its straight branches are from four to eight feet high ; the 
younger portions of which, as well as the leaves, are covered with a silvery pubescence. In low 
saline places we find several chenopodiaceous plants; Salicornia, among others, which here 
becomes a stout shrub of two or three feet in height. These localities also furnish the singular 
Dicoris, a notice of which appears in Dr. Torrey's Appendix to Emory's Keport, 

A kind of soft cane grass {Arundo PJiragmites) grows along the river's margin, and is the 
principal reliance for fodder in this region. Two other kinds of grasses are met with in similar 
situations, the seeds of which are collected for food by the Indians living near the river. One 
of these is a Famcum, the seeds resenihling millet. The other has digitate spikes, resembling 
Eleusine. The flour made from the seeds of these wild grasses is husky, hut quite palatable ; 
and it may he remarked, that species of the genera from which it is derived are in common 
cultivation in the eastern hemisphere. 

Many ravines occur on the eastern edge of the desert, by means of which its drainage reaches 
the valley of the Colorado; these furnish some of the most interesting plants in the district. 
Here we again encounter the silvery ehapparal tree, before noticed, (Daha spinescens ;) also, 
another of the same natural family, Olne^a Tesota, (Q-ray, PI. Thurb.) This is a good sized 
tree, having much the habit of the common locust. Its fruit consists of short irregular pods, 
which contain two large orbicular seeds. The flowers were not seen. We also find here the 
tree frequently referred to in Major Emory's Keport as the "green-harked acacia" of the 
valley of the Gila. This is Cercidtum fioridanum ; and in these localities it is quite a large 
tree, resembling the weeping willow in habit. Its long drooping branches bear an abundance 
of pods. 

Fouguieria grows upon all the gravelly hills, and the cactus family arc represented by a 
slender, cylindrical, much branched, and horribly spinose Opuntta, (0. ramosissima, Engel. n, sp.) 

Much yet remains to be learned respecting the vegetation of this singular region, especially 
that of the eastern base of the mountain range. Only enough is known at present to prompt 
the desire of a thorough botanical exploration of its floral riches. 

On taking leave of this branch of our subject, we briefly notice a few general facts connected 
with the vegetation of the country under consideration. One of tho most striking botanical 
characteristics of this region, and one which attracts the attention of the most casual observer, 
is the great preponderance of evergreen shrubs. This is not only true of the seacoast and 
desert, but also of the higher mountain ranges. This fact has an important bearing upon the 
aspect of the scenery, which would otherwise be desolate indeed in a country exposed to an 
uninterrupted drought of seven months duration in each year. Though the verdure has not the 
vivid freshness of spring, but is even inclined to a leaden hue, yet the relief to the eye will be 
readily appreciated when contrasted with those complete deserts, whose universal barrenness 
seems increased rather than relieved by the repulsive spine-clad cacti or bristling yuccas. 

Another peculiarity is the general prevalence of a balsamic odor. This is especially true of 



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24 



UNITED STATES AND MEXICAN liOUNDARY. 



the most arid tracts, and serves to give a somewhat stimulating property to the atmosphere. 
This odor is due not only to the ahundance of artemisias, hut to a great variety of plants, 
especially those of the Labiate order, such as species of Salvia and AudiherHcr. Most of the 
Compofifoi found liere are more or less aromatic. In all cases the aroma seems to depend upon 
a resinous exudation, which probably performs the office of checking evaporation, by closing 
tiie pores of the leaves, and thus enables the vegetation of these arid tracts to survive the long 
continued dry season. 

The effect of the peculiarities of the climate upon the vegetation of this region may be noticed 
here. The singular alternations of wet and dryness, heat and cold, produce a confused blending 
of seasons. Upon the immediate coast most of the annuals and those perennial plants having a 
succulent nature make .their growth during the winter months, that being the season of rain. 

In this latitude vegetable growth meets with but very little impediment from cold, as in these 
months the temperature rarely falls below the freezing point. When the November rains com- 
mence falling vegetation puts on its spring aspect, every barren hill is soon clothed in green, and 
hy midwinter flowers are blooming in profusion everywhere, and many have even passed their 
brief season and have gone to seed. At this time the larger trees and deciduous shrubs drop 
their leaves, and only resume them at the close of the rainy season. This seeming exception to 
the general activity of vegetable life during the winter months is accounted for by the fact fiiat 
the class of plants alluded to is almost exclusively confined to the margins of streams, hence 
their growth depends less u^ion moisture from the atmosphere. As dryness advances, during 
the months of May and June, all the evanescent forms are swept away, and the profusion of 
spring flowers gives place to the scanty products of tie arid summer. Finally, these two yield 
to a still more sparse autumnal growth, which is mainly confined to the courses of streams. 
On the mountains, however, we find the alternation of seasons more like that of temperate 
climates. Here there is a winter sufficiently cold to prevent and a summer sufficiently moist to 
favor vegetable growth, which continues throughout the latter season. The scanty vegetation 
upon the eastern side of the mountains and along the Colorado is but partially watered by the 
uncertain showers of summer, and depends mainly upon the regular overfiowing of the river. 
As the waters recede, the inundated places are speedily covered by a very rapid growth. 

An enumeration of the plants observed, with precise and detailed accounts of the most 
interesting among them, will be found in the accompanying memoir by Professor John Torrey. 

AGRICULTURAL CAPACITIES. 

We will conclude this general sketch by briefly considering the agricultural capacities of the 
country, as indicated by its general geological features, its climate, and the natural botanical 
productions. 

Commencing at the coast, we notice a prominent wall of high tertiary stuff abutting on the 
sea. This portion, which is thinly clad with verdure at any season, presents an uninviting 
aspect. Hence it happens that to the traveller who views it from the sea it is forbidding in 
the extreme. At a variable distance inland, however, where we find the line of settlements, 
the rounded hills are covered with a deep rich loam, which in the spring produces a luxuriant 
crop of wild oats. The river margins of this section are also of the same fertile character, and 



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INTRODUCTION. 25 

support a rank vegetation. Along this belt, too, lie fruitful plains, which, when clothed with 
the pasturage of early spring, excite the admiration of the beholder. 

Aa WG approach the junction of the tertiary and the granitic exposures barrenness again 
prevails. The thin soil, which is here confined to the crevices of the rocks, produces a growth 
of shrubbery, the stunted character of which indicates its unproductive nature. Proceeding 
further inland, we And among the basin-shaped mountain valleys large trees and rich pasture 
grasses, denoting that a fertile soil again appears. This character, more or less varied by local 
causes, extends to the summit level. 

Occasionally terraces are found upon the higher mountain slopes which possess a productive 
clay soil, well adapted to the growth of winter grains. In general, however, these localities 
are rugged and barren. Prom these facts it would appear that this country possesses a large 
share of fertile soil, but in estimating its agricultural capacities we must also take into consider- 
ation the peculiarities of the climate if we would arrive at correct conclusions. It is owing to 
the fact that this latter is not taken into account that such discrepancies occur in the st-atements 
of travellers, who, according to the season at which they view the country, pronounce it some- 
times a desert and at others a garden. Let any one follow up the coast in the month of March, 
and pass over the verdant plains that stretch towards the sea ; let him see every valley and hill 
clothed in the rich green of the wild oats, and every snow-fed stream running with clear water, 
and he will exclaim, " This is Arcadian land, the realization of the poet's song." But let him 
pass over the same region in the month of August or September, when nearly every green thino- 
has disappeared, when, instead of soft breezes wafting over refreshing verdure, the heated air 
rises with a wavy tremor from the parching ground ; let him visit the land when nothing 
remains of the streams but the dry beds, and the herds of cattle, which before were roaming at 
large iu the enjoyment of the rich pasturage, are gathered in herds around the margins of the 
stagnant marshes, and the same traveller will pronounce the country to be a desert unfitted for 
the abode of man or beast. 

Here, then, we have two widely differing extremes^ between which lies the proper mean. 

The true mode, then, of estimating how far this region is adapted to agriculture is to follow 
up the courses of the various streams which run towards the sea, and note the point at which 
the supply of water is constant, the width of the valley, and the nature of the soil at these 
places, and also whether the character of the surface will admit of irrigation. We then have 
the data for forming a just opinion as to the value of the land for husbandry. If the observa- 
tions are made further inland, among the mountains, then the increase of elevation must be 
taken into account. The winter here brings snow, and the summer is shorter than it is near 
the sea level. Hence the length of the growing season is diminished, but while it continues 
growth is extremely vigorous, especially in the month of June. The abundant supply of water, 
wood, and the bracing mountain air, compensate for a frequently inclement winter, the difficulty 
of transportation, and a short summer season. 

The founders of the early mission establishments in this region seem to have had a clear 
appreciation of these facts, and their locations were wisely selected, so as to embrace the widest 
extent of cultivable land, and the best situations for farms are still found to be in their vicinity. 
These missions occupy the valleys of the main water-courses, generally at that point where the 
supply of water can he depended upon in all seasons. Their aqueducts, bringing water from 
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26 UNITED STATES AND MEXICAN BOUNDARY. 

towards the sources of the streams or from local springs, were often of great length and magni- 
tude. The one helongmg to the San Diego mission, for instance, is a continuous wall of 
masonry for the distance of nearly three miles. The upper portion of each valley was generally 
occupied by a branch dependency of the main mission, thus securing the entire control of the 
agricultural resources of the valley. 

In regard to the eastern slope of the mountain hut little additional need he said. In the 
immediate vicinity of the summit ridge arable land is found, but the more precipitous slope 
renders this too limited in extent to claim much attention. Desert valleys and pent up canons 
succeed between this and the great plain. As far as all agricultural purposes are concerned 
this is truly a desert, though it is not, as is generally supposed, a mere waste of shifting sands, 
and destitute of every kind of vegetation. 

We have already noticed that several shrubs are peculiar to this tract, wliich, if they serve 
no other purpose, at least afford relief to the eye. 

The borders of " New River" being subject to frequent if not regular overflow, would seem 
to present some opportunities for the limited cultivation of maize, beans, pumpkins, and melons, 
such as is practiced by the Indians on the Colorado, and the existence of " gramma grass" on 
the higher adjoining ground would seem to indicate that quickly maturing cereals might be 
raised here. 

The supply of water might, moreover, be rendered more constant and equable by the con- 
struction of artiftcial reservoirs and ditches. Still we must admit that any system of cultivation 
must be very precarious in a location where its success depends upon such variable causes. 

The remarks respecting " New Biver" apply in a great measure to the Colorado. Here the 
cultivation is, of necessity, confined to those portions of the valley that are subject to overflow and 
the consequent deposition of fertiliaing sediment. The higher adjoining lands, being without 
the reach of these influences, are, from their extreme aridity and the light porous nature of 
their soil, quite unfit for any cultivation. 

All the Indian settlements upon the Colorado with which we are acquainted are located with 
reference to an overflowed portion of the river margin. Near the junction of the Gila with this 
river one Indian village occupies an old river bed, which, when the river is high, is completely 
covered by the stream. Another settlement is situated upon a low alluvial delta lying between 
the two rivers, and a third is built in a slough. These are also flooded at high water. The 
articles cultivated by these Indians are principally maize, beans, and pumpkins. No doubt 
that cotton, sugar, and many of the sub-tropical fruits would succeed here, but our present 
knowledge respecting the extent of arable soil, of the vicissitudes of the climate, and of the 
character of the different seasons, is too vague to warrant any hut the merest conjecture in regard 
to its future agricultural importance. 



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UNITED STATES AND MEXICAN 

BOUNDARY SURYEY, 

LIEUT. COL. W. H. EMORY, 

MAJOll riRST CAVALRY, ASD UNITED STATES COMMISKIONF.lt. 



BOTANY 

OF THE BOUNDARY, 

JOHN TORRE Y. 



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BOTANY, 



RANUNCULACE^. 

Clematis heticulata, WalL var.? foliis tenuioribus, etc., Gray, PI. Wright, 2, p. 7. Valley 
of tlie Cibolo, Chihuahua ; Bigeloic. 

Clematis Pitcheri, Torr. <& Gray, Fl. 1, p. 10. Hills of the Limpia and other places in 
western Texas ; Bigdow. 

Clematis liousticjefolia, Nutl.; Gray, PI. Fendl. p, 3. Copper Mines, New Mexico ; 
Bigeloio, and westward to California ; Nuttall, Fitch. 

Clematis lasiantha, Nutt. in Torr. (& Gray, I. c. (Tab. I.) In various places, California, Parry. 
0. paucifiora, Nutt., of which I have a specimen in fruit, kindly sent to me hy that excellent 
hotanist, appears to he a form of this species with smaller leaves and flowers than usual. Dr. 
Parry also found it at San Diego, hut with male flowers only, Seemann refers C. lasiantha to 
C, Peruviana, BO. 

Clematis Drummondii, Torr. & Gray, I. c. Along the tributaries of the Kio Grande, western 
Texas, and the Mexican States west of that river. 

Atragbnb almna, Linn. Sp. p. 764. A. Ochotensis, Pallas; Gray, PI. Fendl. p. 4. Sides of 
Ben Moore, near the Copper Mines of New Mexico ; April ; Bigelotv. 

Thalictrum IfENDLERi, _ffjw/e(Im. in PI. Fendl. p. ^ ; Gray, PI. Wright, p. 7; Torr. PI. Whipple, 
p. 61. Copper Mines, New Mexico ; Bigeloio, Sierra del Pajarito, Sonora; Schott, Monterey. 
California ; Parry. 

Anemone Caeouniana, Wall. Fl. Oar. p. On the upper Kio Grande, western Texas, and 
Chihuahua. Root an oblong black tuber. 

Myosurus minimus, lAnn. Sp. p. Banks of streams, Chihuahua, April ; Bigdow. On the 
lower Eio Colorado, Sonora ; March ; Schott. 

Eanuncdlus trachyspbrmtjs, Engelm. & Gray, PI. Lindh. 1 p. ?,. Prairies of western Texas ; 
Wright. Sonora ; Schott. The two varieties of Engelm. (1. c.) pass into each other. 

Ranunculus aquatilis, var. divaricatus. Gray, Man. ed. 2, p. 7. R. divaricatus, Schrank; 
Gray, PI. Wright, 2, p. 8. On the Mimbree, New Mexico ; May- -.July ; Bigelow, Thurier. 

Kanuhculus Cyhbalari/B, Pursh; Torr. <& Gray, Fl. 1, p. 17. San Elceario, etc., on the 
Rio Grrande ; June ; Bigtlx>w. 

Ranunculus aefinis, E. Broivn; Hook. Fl. Bor.-Amer. 1, p. 12, t. 6. Copper Mines, New 
Mexico ; June — August ; Bigelow. 

Ranunculus hydrocharoides, Gray, PI. Thurh. p. 306. Wet meadows, Mababi, Sonora; 
Thurher. 

Ranunculus MACRAyiiius, Scheele in Linniea, 21, p. 585. R. renens, var. macrantlms, Gray, 
PI. Lindh. 2, p. 141, (f; PI. Wright, 2, p. 8. Wet grassy places on the Limpia ; June— July; 
Bigeloio. 



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30 UNITED STATES AKD MEXICAN ROUNDARY. 

Ranunculus eepens, var. Marilanmcus, Torr. <£ (jray, Fl. \, p. ?,'!. Hills west of the Copper 
Mines, New Mexico ; June ; Bigdoiv. 

Eanukculus Califoenicus, Bmih. Fl.Hartw. p. 295 ; TVr. Fl. WUppl. in Pacific E. Eoad 
JExpl. p. 62. Monterey, and near San Francisco, California ; March — -May ; TImrber, Parry. 

Kanuhculus hbbecarpus, SooJc. d Am. Bot. Beechei/, p. 369 ; Torr. I. c. K. parviflorus, Torr. 
<& Gr. Fl. 1, p. 25, non Linn. 

Delphinium azueeum, MicJix. Fl. 1, p. 314. On the upper Eio G-rande, and westward to 
California ; Apiil — June. 

Delphimuh Calieoenicum, Ton, & Gray, Fl. 1, p. 31. Monterey, California; May; 
Parry. 

Delphinium patens, Benth. PI. Hartw. p. 296. In various parts of California, near the coast ; 
Parry, Tkurber. 

Delphinium MENziESrr, BO. Syst. l,p. 355 ; Lindl. Bot. Beg. t. 1192. Near San Diego, etc., 
Calitbrnia ; March ; Parry. 

Delphinium decorum, Fisch. <£ Mey. Xncl. Bern. (3) Petrop. p. 33. Monterey, California ; May ; 
Parry. Napa county, TImrber. 

Deij?hinium scopulorum, Gray, PI. Wright, 2, p. 9. Hills near the Copper Mines, Now 
Mexico ; Bigeloio, 

Delphinium nudicaule, Torr. & Gray, Fl. l,p. 33 <&. 6G1. Var. caule folioso. Napa county, 
California ; March ; Thurber. 

Delphinium caedinale. Hook. Bot. Mag. t, 485. D. coceineum, Torr. in Bot. Whipp. Rep. 
I. c. p. 62. {Tab. II.) Mountains east of San Diego, California ; Parry. This may prove to be a 
variety of the last species, but the lobes of the leaves are much longer, and taper to a narrow point. 
It is a splendid plant, with largo scarlet flowers. Dr. Parry collected it in the year 1850, and 
I have distributed specimens of it under the MS, name quoted above. Our plate was engraved 
before the figure in the Botanical Magazine was published. 

Aquilegia leptoceba, var. elava, Gray, PI. Wright, 2, p. 9, Organ mountains, near Dona Ana, 
New Mexico, and on hills at the Copper Mines ; April — July ; Parry, Bigelow. Banks of 
rivers, Sonera ; Thurber, & Gapt. E. K. Smith, 

Aquilegia CANADENSIS, Linn.; Torr. db Gray, Fl. 1, p. 29. /?. Torr. in Bot. Whipp. I. c. p 
62. Ravines and hill sides, near Monterey, California; May; Parry. 

PiEosiA Beownii, Dougl. j Bot. Beg. 25, t. 30. Sides of hills above and below Sta. Barbara ; 
also near San Luis Obispo, California, May ; Parry. The carpels vary in number from 3 to 5, 

MENISPERMACEiE. 

OoccuLUS Carolinus, PG. Syst. 1, p. 524 ; Gray, Gen. III. 1, t. 28. Wet ravines, valley of 
the Pecos, and on the lower Rio Grande, Texas. 

BERBEEIDACEiE. 

Bebberis (mahonia) Aquieolium, Bursh, Fl. 1, p. 219, t. 4, {exd. fig. V.) Near Monterey, 
California ; Parry, and on hills at the Copper Mines, New Mexico ; Bigeloiv. 

Beebeeis (iRiLiCDrA) Fbemohth ; follis 2 — B-jugis, jugo ad basim petioli approximate, foliolis 
ovato-lanceolatis vel late ovatis repando-dentatis ; dentibus spinescentibus ; racemia paucis 



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BOTANY, 31 

erectis laxe 5 — 7-floria folium subaeqnantibus ; pediceliia flore subduplo longioribua. B. 
tj'ifoliata, Torr. Bot, Whipp. p. 63, ex parte, non Morie. "Western Texas and New Mexico ; 
Bigdow, Tkurber. Canon of the Guadaloupe river, Sonora ; Oapt, E. K. Smith. A handsome 
shrub 5—10 (rarely 15) feet high, Leaves coriaceous and rigid ; leaflets 1—24- inches long, 
eometimeB truncate or cordate at the base, the middle one usually much longer than the others, 
and with more numerous teeth ; the lowest pair situated close to the base of the petiole. On 
some specimens the primary leaves are reduced to small branching prickles, aa in Berberis 
proper. Racemes 1—3 together ; the pedicels 4—5 lines long. Flowers about as large as 
in the common Barberry. Filaments inappendlculate. Berries somewhat ovate, dark blue, 
about the size of currants. This species was first discovered by Fremont, in 1844, on the 
tributaries of the Eio Virgen, in southern Utah. It is nearly allied to B. trifoliata, but differs 
in the number of leaflets, longer racemes, and blue berries. 

Ekeberis tripoliata, Morio. PI. Nouv. Amer. p. 113, t. 69 ; Gray, PI. Lindh. 2, p. 142. 
Western Texas, and on hills near the Copper Mines, New Mexico ; Bigeloiv. Westward to 
Chihuahua, Nuevo Leon, etc.; Gregg, Thurher. The briglit red acid berries are used for tarts, 
and are less acute than those of B. vulgaris. 

NYMPHAEACE^. 
NuPHAR AOVENA, AU. KfAo. cd. 2, ?,,p. 295. In water. Devil's river, western Texas; Sept. 
in fruit ; Bigdow. 

TAPAVERACEiE, ' 

Argemonb Mesicana, Linn; Torr. & Gray, Fl. 1, p. til. On the lower Rio Grande, Texas ; 
Schott. Westward to California ; Parry. 

Var. HispiDA A, hispida. Gray, PI. Fendl. p. 5, Sonora; Thurb&r. 

Argbmone PRxmcosA, Thurh. in Gray, PI. Thurb. p. 306. La Pena, Coahnila ; Thurher. 

Meconopsis hetbrophylla, Benih. in Bond. Hori. Trans, (ser. 2) 1, p. 407; Hooh. Ic. t. 733. 
Near the sea beach at San Diego, and at Santa Barbara, California ; February ; Pari-y. Our 
specimens are certainly annual, 

EscHSCHOLTziA Califoenica, Cham.; Torr. & Gray, Fl. 1, p. 664. Monterey, and various 
other parts of California ; Parry, Tkurber. 

EeciiscHOLTzrA Douglasii, Boole. & Am. Bot. Beechey, p. 320. Ravine.? along the Rio Grande 
from Frontera to Eagle Pass ; also in Chihuahua and Sonora ; February April. 

Platystemon CALiFORNiouM, Pentk. I. c; Lindl. Bot. Beg. t. 1679 ; Torr. <& Gray, Fl. 1, p. 
65. Grassy places in various parts of California ; Parry, Thurher. Most of tlie specimens 
belong to the variety l&tocarpum. " Flowers ochroleucous, turning yeliow in drying." 

Platystioma lisbare, Benth. I. c. ; HooJc. Ic. t. 38 ; Torr. d Gray, Fl. I. c. Nelr San Luis 
Obispo, California; April; Parry. 

Mbconblla Californica, Torr. & Fr'em. in Fr'em. 2d Hep. p. Near San Francisco, California, 
on damp rocks ; March ; Thurher. 

Romneya Coultehi, Harv. in Hooh. Bond. Jour. Bot. 4, p. 4, 74, /. 3. Borders of dry streams 
south of San Diego, California; Parry. A showy plant, with large white &owevs, which, in 
some of the specimens, are 4^ inclies in diameter. The mature capsules and seeds are not yet 
known. 



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UNITED STATES AND MEXICAN liOUNDAIiY. 

■ KiGiDUM, Benth. I. c. ; Hook. Ic. t. 37; To'rr. d: Gray, I. c. (Tab. III.) Tn 
various parta of Calii'ornia, especially near the seacoast. 

rUMARIACE^l 

CoRYDALis AUREA, WHld. var. Siliqwis breviosculis, etc., Gray, Fl. Wriglit, 'A, p. 10. Dry 
ravines, Frontera ; Bigelow, etc. Hue^o mountains, Texas, Mareli ; Thurber. 

DiCBNTRA? CHRYSAHTHA, Hoo!<!. <& Am. Bot. Beeck. p. 320, t. T3 ; Torr. d Gray, Fl. l,p. 065. 
San Felipe, California ; Parry. Between San Diego and the Rio Colorado ; Schoti. Monterey ; 
Mr. Andreivs. A tall branching plant, (3 — 4 feet high,) with showy golden yellow blossoms in 
panicles. It differs from Dicentra in the filaments of the two phalanges teing united nearly to 
the summit, where alone they are distinct ; in the dull verrucose hoise-shoe-forni seeds, which 
are thick on the margin, and destitute of a strophiole or crest ; and, lastly, in a peculiar habit. 
The pollen is spherical, as in Dicentra. It may be considered as ihe type of a genus or sub- 
genus, to wliieh the name of Chrysocapnos would not be inappropriate. 

CBUOIFERiE. 



CiiEiRASTiiDS ASPER, Cham, d; Schlecht. in Linnaea, 1, p. 14, excl. eyn. C. capitatus, Dougl. in 
Hook. Fl. Bor. Amer. \,p. 38. Erysimum gnmdiflorura, Nutt. in Torr. & Gray, Fl. 1, p. 9(5. 
Sandy hills near Monterey, California ; May; Parry. The specimens are in flower and fruit. 
The siliques are an inch and three- quarters long, nearly two lines broad, and much compressed. 
Seeds narrowly winged, and sometimes partly in two rows. Cotyledons distinctly accumbent, 
although the radicle is, in some cases, slightly oblique. An original specimen of Nuttall'a 
plant agrees exactly with ours, but it has only very young fruit. The ripe fruit and seeds have 
probably not been seen before. 

Aeabis maorocarpa. Turritis macrocarpa, Nutt. in Torr. & Gray, Fl. 1, p. 75. Wet places, 
San Isabel, California ; May ; Thurber. 

Arabis patula. Turritis patula, Graham; Gray, PL Fendl. p. 7. Near the Mimbrcs, New 
Mexico ; April ; Bigelow. Sonora ; Parry. 

Cardaminb angulata. Hook. Bot. Misc. 1, p. 343, t. 69 ; Torr. Bot. Whipp. liep. p. 65. C. 
paucisecta, Bentli. PI. Hartw. p. 297. California ; Parry. The station not recorded, but pro- 
bably Monterey, 

Dryopetelon runcinatl'm. Gray, PI. Wright, 2, p. 11, i. 11. Mountains of Chihuahua and 
Sonora; March — September; Bigelow, Parry, Schott. Ilueco mountains, thirty miles east of E^ 
Paso, Texas ; Thurher. 

Streptanthus LiNEARiroLius, Gray, PI. Fendl. p. 7, and PI. Wright, 1, p. 7 ; and 2, p. 10. 
Hills near the Copper Mines, June — ^August ; Bigelow. Guadaloupe Caiion, Sonora ; Thurber. 
Chihuahua ; Schott. 

Streptahthus pLATYCAKrus, Gray, PI. Wright, 2, p. 10, Mountain ravines, New Mexico ; also, 
in western Texas and Chihuahua, along the Eio Grande, and west, to Sonora, March — April ; 
Bigeloio, Parry. 

S'ruEPTANTiiuri CARiHATiis, Gray, I. c. Ravines near El Paso ; April. A showy species, and 
worthy of cultivation, 

STREPTAHTHrs PETiOLABis_. Gray, PI. Fendl. in not. p. 7. Rocky hills, near the Liuipia moun- 
tains, and Mountains of Muerte, etc. ; July ; Bigelow. 



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BOTAHY. 33 

Stkkptanihus LomiFOLIUS, Bentli. PI. Sartw. p. 10 ; gray, Fl. WrigJa, 2, p. 10. Kocky hills, 
western Texas, Near the Eio Grande, July ; Bitfdow. 

Stmptanthub sLAmcLosos, Hook. Ic. t. 40; Jbiv. ij Ormj, Fl. l,p. 11. Napa county, Cali- 
fornia ; TImrher. 

Stkeptahthto akcdatcs, Sutl. in Torr. d Grat,, Fl. I. c. Kocts on the seaooaBt, near San 
Francisco, California; April; TImrher. 

NAsniETiuii PAHIBTRB, DO.; Oray, PI. Wright, 2, p. 10. Moist places, western New Mexico, 
Texas, and Chihuahua ; April ; Bigelmo, Ihurher. Variahle in the length of the pods. 

Nastubtiom OBTtJsrai, Nutt. I. 0. Wet sandy places on the Eio Grande, from Now Mexico to 
Eagle Pass ; Bigdow, TImrter. Specimens from the lower Eio Grande have tlio pods nearly 
three-fonrths of an inch long. 

Nasturtium sbsiliplorum, Nutt. I. c. Brady's creek, Texas ; TImrher. 

Nasturtium curvisiliqua, Nutt. I. o. Napa county, California ; TImrher. 

Baeiauba tumaeis, Pr. Br. var. pedicellis angulo recto patnlis, Benlli. PI. Hartw. jj. 297. 
On the Bio Mimhres, New Mexico ; Bigelow. This resembles the California plant in the style 

Thblipopium WEimni, Gray, PI. Wright, I, p. 3. Plains and low grassy places, Leon 
Springs, and along the Eio Grande, from forty miles helow San Elceatio to Eagle Pass; April- 
Sept. ; Bigehw, Sehatt. 

Sisymbrium cambsoiss, Nutt. in Torr. * Gray, Fl. 1, j,. 85. On the Eio Grande, from El Paso 
downward ; also, in New Mexico ; Eebr.— May. Leayes often coarsely dissected. 

SiSYMREIUM MBBUSUM, Gray, PI. Wright, I, p. 8. Bocks near the Limpia, Texas ; hills near 
the Copper Mines ; and rocky places, Puerle do Paysano ; July— Sept. ; Bigdota. 

Eevsimum aspbrum, do. ; Torr. & Gray, Fl. 1. j). 95 ; Torr. Bot. Whipple, Pep. p. 66. Western 
Texas, Chihuahua, Sonera, and California. An extremely variahle plant, which may ho referred 
to several nominal species. 

Grioqia camporum, Oray, Fl. Wright, l,p. 9, t. 1. Hills and prairies, on the Pecos and upper 
Eio Grande ; also, iu Chihuahua and Coahnila. The canliue leaves vary from entire to repandly 
toothed. 

Deaba miceaktiia, Nutt. in Torr. c6 Gratj, Fl. I , p. 109. El Paso, and near the Copper Mines, 
March— April ; Bigehw, Thurher. Guadaloupe Pass and Santa Cruz, Sonora ; Parry. 

V.SICAMA DBHSIBLOEA, Gray, PI. Lindh. 2, p. 115. Eagle Pass, and other pllces on the lower 
Eio Grande ; March ; Sohott. 

Vesicaria argyrea, Gray, I. c. Near Corallitus, Chihuahua ; Thurher. 

Tbjicaeia stbiophylla. Oray, I. c. & PI. Wright, 2, y. 13. Hueco mountains, Texas ; Thurher. 
EI Paso and Mule Springs ; March— April ; Bigehto. All the forms described by Gray occur iu 
the collections. 

Vbsicaeia ebcueyaia, Fngelm. in Gray, I. c. <t PI. Wright, I. e. Banks of the Leon, Texas, 
April ; Thurher. Tucson, and on the Gila, Sonora ; March ; Parry. 

Vbsicaeia purpurea. Gray, PI. WrigU, 2, p. 14. Hueco mountains, in rocky places. El Paso 
and Cook's Springs ; March-April ; Bigeha, Thurher. Guadaloupe Pass, &c., Sonora ; March ; 
Parry. The petals are only slightly purple, often almost white, and yellowish toward the 
claw. 

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S4 tlNITED STATES AND MEXICAN I50UNUAR1', 

Vesicaeia lasiocakpa, Rook.: Gray, I. c. p. 13, m not. Elm creclt, valley near the Rio Grande ; 
SchoU. Ringgold barracks ; Oapt. E. K. Smith. 

DiTiiTRiEA WiSLiZENi, Eugelm. in Wisli'^. Mem. N. Mex. p. ^'\ ; Tarr. in Silgr. Sep, p. 280, 
t. 11. Prairies and sandy banlte, El Paso to the Copper MinoR ; Bigdmo, TJmrhcr. Overflowed 
banks of the Gila ; March ; Parry. 

DiTnYE^A Californica, Harv. in IIoolc. Land. Jour. Hot. 4, p. Tt, t- 5 ; Englm. I. c. Dry rivei' 
beds of the Colorado, California ; SchoU. 

TnLASPl Fendlbri, Gray, PI. Wright, 2, p. 15. Organ inonntains and Copper Mines, New 
Mexico; A])T'i\—M.a,y;Bigelow,Thurher. Guadaloupe Pass and Tubac, Sonora; Ii"Gbrnary— March ; 
Parry. The radical and lower cauline leaves are often denticulate. 

Stnthlipsis Gbegqii, Gray, PI. Fendl. p. 110, in not. Hill-sides on the lower Rio Grande ; 
common neat- Eagle Pass ; March — September ; Scliolt. ^ 

Hymenoloeus ptjbens. Gray, PI. Wright, 1, p. 9. Wet places near Rock creek ; July ; Bigelow, 
Parry. 

Lbpimum alyssoidbs, Gray, PI. Fendl. p. 10. Chihuahua and on the Pecos ; Thurher. Ijow 
grounds near El Paso, and on the Organ mountains ; May — October ; Bigelotv. Valley of the 
Gila; Schott. Santa Cruz valley, Sonora ; Thurher. The late secondary leaves on specimens 
from the Organ mountains are deeply pinnatifid, and the segments toothed. 

Lbpidium; Wrightii, Gray, PI. Wright, '2., p. 15. Ravines near El Paso and at the Copper 
Mines ; March — April. 

Lbpidium intbrwbdium, Gray, I. c. Ravines, Organ moimtains ; April ; Bigdoio. 

Lepidium latipes, Hooh. Jo. 1, t. 41 ; Tarr. & Gray, 1, 'p. llfi. Mission of San Luis Roy, 
California ; Parry. 

Lbpidium nitibum, Nutt. in Torr. d Gray, I. c. With the last; Parry. San Isabel, Cali- 
fornia ; February ; Thurher. 

Lepidium OAmoEMicuM, Nutt. I. c; var. foliis bipinnatifidis ; siliculis majorihus margine his- 
pidis. With the last, and in the interior of the country as far east as the mountains. 

1 The following note is kindly furnished by my friend, Dr. Gray : 

"Syhthlipsis Greggii, {Gray ;) canescons val suboinerea ; foliis aliovatia obiongisve aub obatis vel siniiato-pinnaiifidia pic- 
risqiie pctiolatia roseis albisve ; siliculis ellipticis (nunc ovalibus) oomplanatis insignitar m t 1 dorso ocutissiiiiiia apico 

marginato-subproductia. San Fernando, Coahuila; Bfrlaxidur, (No, 832, 9331 & 49) B 1 d r's upecimens, tliough 
groen or glabrate, on!y Uie young parts being at all hoary, and the leaves larger ad d y t pparently belong to the 

Bamo BpecioB as Dr. Gregg's plant, on wliioli this genus was founded The eilicles va 5 f f en lines in length, are 

oblong-elliptical, or soroetimcs broadly oval, witli a pretty strong emargination at th p tr ngly b-corapressed, and with 
an acute margin. The root is probably only biennial. The specific character here g en to d h this species from the 

following ; 

■< SvHTHLiPsis Berlahoieri, (sp. hov.) : puherala ; foliis oblongis pinnatifido-laciniatis, caulinis sessilibns 1 petalis lul«is ; aili- 
culis orbiculatis Bubretusis, valvis ad apicem baud productis. Matamoras ; March and April ; Berlamficr, (No. 710, 778, 1517, 
S127, 2198, 3017, 3102.) Root apparontly only biennial. Sterna diffuse or decumbent, about a foot in length, puboriilent, as is 
the foliage, fee, with a minute and inconspicuous stellular down. Leaves an inch or less in length, 3-G lines wide, laciniately 
pinnatifid and tootlied. Racemes elongated in fruit, secund ; the pedicels four to eight lines long, rBourved in fruit ; style about 
tbe length of the cancscent ob-comprBSSod ovary. Silicle three lines in length and breadth, slightly retuse at both ends, or at 
laaat at the apex, tipped with a slender style of a line in length ; the valves sirongly navicular, barely acute on the back, which 
is not produced into a maigin at tlie apex. Seeds eight to ten in each cell, orbicular, flat, marginless, on filiform frea funiculi. 
Tlijs plant in fiower might be taken for one of the glabrate species of Vesioaria, hut its siliclee, strongly flattened contrary to 
the narrow partition, and the position of the seeds, exclude it from that grniis, and from llic tribe of Alyssinca: ; and mnnifpslly 
refer it to SynthlipHis,witli which it accords in habit."— (^. Gray.) 



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BOTANY. 35 

CAPSJiLLA BURSA-rASi'ORB, MoGitt'h : DO. S'jst. 2, p. 281). Huh Luis Itey, Caliiuriiia, Doiiht- 
leaa an introduced plant. 

Hymknolobus divaricatus, Nutt. in Torr. & Grciy, Fl. I, p. 117. Califbriiifi; Farrij. Tliu 
atation not recorded ; proljably San Diego. 

Thtsanocarpus elegaks, Fisch. <& Mey. Ind. Sem. Hori, Petrop. (1835)^. 50; Torr. (& Gray, 
Fl, 1, p. 118, (var. 7-.) Dana's Eancb, California ; Parry. Napa, Mareli ; Thtirhtr. Tucson, 
Sonora ; Parry. The last is the most eastern station known of a species of this genus, 

THYSASocAErus CEENATL'Sj Nutt. {« Torr. (& Gray, I. c. Santa Ana, California, jVIarcli; Parry. 
Napa ; Thurher, 

Thysanocarpus laciniatus, Nutt. I. c. With the last. A more slender i'urm than Nuttall'H 
plant. 

Ehapiianus Hapiianbtrtjm, Linn.; DG. Prodr. 1, -p. 22!J. Naturalized abundantly on the 
lower Eio Grande and in the adjoining Mexican States. 

CAPPaRIDACE^. 

Cleomella ANGUSTrFOLlA, Torr. in Gray, PI. Wright, 1, p. 11, m not. (iravelly [tlHces near 
Presidio del Norte, September ; Biyelow. 

CLiiOMELLA LONGIPES, Tor)\ I. c. Sallno plains, Sonora, June; Thurber ; Cupt. A'. K. Smith. 

Oleome Sonoe^, Gray, PI. Wright, 2, p. IC. With the last ; Thurber. Near the Mimhres, 
New Mexico ; Bigelme. 

Cristatella Tambsh, Torr. t& Gray, Fl. I, p. 123; Gray, Gen. III. 1, p. 177, t. 77. Between 
Victoria and San Antonio, Texas, October ; ScJiatt. 

PoLANisiA TJKIGLAHDUL03A, BG. Prodr. 1, J). 242 ; Gray, PL Wright, p. 10. Sandy places on 
the Eio Grande ; also on Oibolo creek and near the Copper Mines ; April — July. Variable in 
the size of the flowers. Seeds smooth and rough, often in the same specimen. 

WiSLizENiA EEFEACTA, Engelm. in Wisliz. Mem. N. Mex. p. 99; Gray, I. c. Alluvial soils 
near El Paso, May ; Parry, Bigelmo. Valley of the Gila ; June; Schott. Sonora; Thurber. 

IsoMBEis arborea, Nutt. in Torr. & Gray, Fl. 1, p. 124. — (Tab. IV ) San Diego, California; 
May; Parry, Thurber. This interesting and handsome shrub deserves a place in our gardens. 

Ei,SEDACE^. 
Oltgomukis glaucescens, Gambesfi.; Gray, PI. Wright, 2, p. 16. Common along the Rio 
Grande, also in Chihuahua and on the Gila. 

VIOLACEiE. 

Viola adunca. Smith in Mees Cyclop ; Torr. Bot. Whippl. R^. p. 68. V. longipes, Nutt. 
. in Torr. <& Gray, Fl. 1, p. 140. Near Monterey, California ; April ; Parry. Plaitis near the 
scacoast, San Francisco ; Thurber. A form resembling Hartweg's No. 1660. 

Viola ocellata, Torr. & Gray, I. 0. New Almaden, California ; April ; Thurber, 

Viola pbdemculata, Torr. di Gray, I. c. San Luis Obispo; April ; Parry; and San Diego td 
San Isabel, California; February; Thurber. 

YlOhA LOS&TA, Benih. PI. Sartto. p. 298; Torr, Bot. Whippl. Rep, p. P18. Sumiiii(. ol' l.lie 
mountains cast of San Diego, June ; Parry. The leaves vary greatly. On the same specimen 
some of them are but slightly lobed, others are cut nearly to the base, 



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36 UNITED STATES AND MEXICAN BOUNDAKY, 

Viola CDO0LLATA, Ait.; Torr. & Gray, Fl. 1, 139. Wet places near the Copper Mines and 
river Mimbree, New Mexico ; April ; Bigeloxv, TTiurber. 

loRiBiUM LiSBAEE, Torr.) Gray, Gen. III. l,p. 189, t. 82. New Mexico and western Texas; 
west to Ohiliualma and Sonora, It varies with the leaves broadly and narrowly linear, and 
from entire to acutely denticulate. 

GISTACEJF,. 

Helianthemum scopakium, Nutt. in Torr. <& Gray, Fl 1, p. 152 ; Benth. PI. HartiS. p. 299. 
Monterey and San Luis Eey, California; March — May; Parry. 

Heliantheml'm Caboliniandm, Michx. Fl. 1, ^. 307. Western Texas, August ; Wright. 

HYPERICACEjE. 

Hypeeichm iormosum, H. B. K. Nov. Gen. (6 Sp. 5, p. 196, t. 160; Gray, PI. Wright, 2, p. 
17. Wet places near the Copper Mines, New Mexico; June — July; Bigeloto. Santa Cruz, 
Sonora ; Thurhei'. 

Hypbbicum Scoiileei, Rook. FL Bor. Am. I, p. 111. MountainSjeast of San Diego, Califor- 
nia; June; Parry. 

EiiATiNE Americana, Ntitt.; Gray, Gen, III. 2, p. 220, t. 95. Hills near the Copper Mines, 
New Mexico ; Bigelow. 

FEANKENIACE^. 

Erankesia GiiANDiFOLiA, Cham. S Schlecht. in JAnnaea 1, f. 35 ; Torr. & Gray, Fl. 1, p. 168. 
Salt marshes and along the seashore near San Diego, California; June; Parry. Alluvions of 
the Hio Gila, Sonora ; Schott. In Mr. Schott's specimens the leaves are much narrower than 
in those from the sea-coast. 

CAEYOPHYLLACEJi;. 

SiLBNE Antirrhixa, Linn.; Torr. <& Gray, Fl. 1, p. 191. Western Texas ; New Mexico and 
westward to Sonora and California. 

SiLENB PULCHRA, Torr. <& Gray, Fl. 1, p. 675. Eastern slope of the mountains east of San 
Diego ; Parry. 

SiLENE QOIHQUBVDLNEEA, Linn.; ToTT & Gray, I. c. Near Monterey, California ; May ; Parry. 
Probably introduced. 

SiLEHE Geeggk, Gray, PI. Wright, 2, p. 17. Ravine at the Copper Mines, New Mexico; 
August ; Thurber. 

Abenaria Benthamh, Fenzl.; Torr. <& Gray, Fl. 1, p. 675. Blanco river, Texas ; Wright; 
and San Antonio, in the same State ; Thurber. 

Arenaeia DIFFUSA, Fll. Sk. l,p. 519 ; Gray, PI. Wright, 2, p. 18. Painted Camp ; Bigelow. 

Alsinb tenella, Nutt. in Torr. & Gray, Fl. 1, p. 179. A. tenuifolia, B. araericana, Fend, in 
Ann, Wien. Mm. Monterey, California, May; Parry. Differs from A. tenuifolia in the less 
pointed sepals and in the seeds, which are 4 to 5 tinier; larger, as well as more compressed, and 
marked with minute radiating rug^e. 

AislNE DoTjfiLASii, Fend.: Torr. (jt Gray, FL I, p. 674. San Diego and Benicia, California; 
Thurher, 



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BOTANY. 37 

Stbllaria NiTENS, NuU. in Torr. dt Gray, Fl. 1, ^3. 185. S. moencliioides, Fen-d. I. c. Gfrassy, 
moist places near San Diego ; Parry. The flowers in our specimens are all apetalous. 

Stellarta media, J, E. Smith, Engl. Bot. t. 53T. Santa Barbara and other parts of Califor- 
nia; introduced from Europe. 

Paronychia eamosissima, DO. Mem. Paronych. p. 12, t. 4 ; Torr. & Gray, Fl. 1, p. 72. San 
Luia Rey, San Diego, &c.; Parry, Tlmrier. The large, imbricated, scarioua stipules give 
this plant a silvery appearance. There are commonly 5 stamens, with as many intermediate 
oblong scales which are about the length of the filaments. 

Paronychia Jamesh, Torr. &Gray, Fl. 1, p. 170; Gray, PI. Wright, 1, p. 13. Kavines, 
Kook creek ; July ; Bigelow. Ojo de Vaca, Chihuahua ; Thurher. 

Paronychia Lindheimbri, Engdm. in Gray, PI. Lindh. 2, p. 152. Middle and western Texas. 
Near tbe last species. 

Spergularia rubra, Pers. Syn. I, p. 504 ; Gray, Gen. IE. 2, p. 25, i. 107. Banks of the Rio 
Grande and seacoasfc of California. 

Drymaria glandclosa, Bartl.; Gray, PI. Wright, 2, p. 18. Hills and rocky places, Copper 
Mines, New Mexico ; August — October; Sigeloiv. 

Drymaria frankenioides, H. B. K.; DG. Prodr. 1 , p. 395. Plains near the city of Chihuahua 
October ; Thurher. Arroyo near the Eio Grande, in Chihuahua ; Parry. 

Drymaria sPBRauLABlolDEs, Gray, PI. Fendl. p. 11. Ravines and low places near Lascuta 
July; and near the Copper Mines ; August; Bigeloio. 

Drymaria efpusa. Gray, Fl. Wright, 2, p. 19. Hills near Santa Cruz, Sonora ; September 
Thurher. 

POETULAOACE^. 

Calandrinia Menziesh, Hook. Fl. Bor. Am. 1,^. 223, t. 70. Grassy places near San Diego, 
March ; Parry. 

Calandrinia maritima, Nutt. in Torr. & Gray, Fl. 1, p. 197. On the Coronadoa islands, on 
the coast of California ; May ; Thurher. 

Trianthema MONOGYNA, Lijut.; DO. Prodr. 3, p. 352. Plains of the Limpia, Texas; July; 
Bigelow. Magdalena and Sierra Verde ; Thurher, Schott. 

Talinum aurantiaouMj Englm. in PL Lhidh. 2, p. 154 & fi. angusxissimum, in Gray, PI. 
Wright, 1, p. 14. Gravelly hills near Rock creek and Van Horn's Wells, Texas ; Bigelow. 
Sandy places, Sonora ; Schott, Thurher. 

Talinum parviplokdm, Nutt. in Torr. i& Gray, Fl. 1, p. 197. Stony hills at tbe Copper Mines 
and El Paso, New Mexico ; also in Western Texas ; Bigelow, Thurher. 

Taliktjm REFLEXUM, Cav. Gray, PI. Wright, 2, p. 20. Dry prairies and hill-sides, San Pedro 
river up to the Pecos, and along the Rio Grande from El Paso to Presidio del Norte ; June — 
October, 

TATJNorsis PRUOTESCBSS, Gray, PI. Wright, 1, p. 15, t. 3. Gravelly hills along the Rio Grande, 
from EI Paso downward to the mouth of Great Cafion ; also on, the Cibolo ; June — August ; 
Parry, Bigelow. 

Spragnea umbellata, Torr. PI. Fremont, in Smithson. Gontrlb. 6, p. 4, t. 1. Damp rocks, 
Napa county, California ; Thurher. 



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38 UNITED STATES AND MEXICAN BOUNDARY, 

Claytohia pbrfoliata, Bonn; Twr. Gray, Fl. 1, p. 199; Torr .in Bot. WMppI,. Hep. p. 70, 
Monterey, California; Parry. Var. rARViFLORA, Ihrr. I. c, Napa county, Caiifornta; Thurber. 

Claytonia Virgisica, Livn.; Twr. cfc dray, FL 1, p. 1'38. Ojo San Francisco ; February ; 
Parry. 

Sesuvixim portulacastrum, Linn.; DC. Piyydr. 3, p. 352. On the Kio Griande, from Doiia Anai 
New Mexico, to the Gulf; April — Oetoher, Common along the G-ila ; Thwrber. 

PoRTULACA PiiosA, lAnn.; Engeltn. in Gray, PI. lAndh. 2, p. 154; PI. (Vright, 1, p. 13. 
Howard's Springe and dry ravines near the Liinpio mountains ; July — August; also near the 
Copper Mines ; Bigeloio. 

PORTtJLACA LANCBOLATAj Fngelm, I. c. Eocky places, Mule Springs, and Puerte de Paysano; 
August — September ; Bigeloio. 

MALVAOB^. 

Malva BORBALI&, Wolm; Gray, PI. Fendl. p. 15. Monterey, California ; Parry. 

Malvastrum Americanum. Malva Americana, L. Sp.p. 968, (non Cavan.,) DO. Prodr. l,p. 
430. On the lower Rio Grande ; Schott. Rngel collected this species on Key West, Florida, 
(No. 89 ; Shuitleworth.) 

Malvastrum Monroanum, Gray, PI. Fendl. p. 21. Malva monroana, Dougl. in Bot. Reg. t. 
1306. M. fasciculata, Nutt. in Ihrr. <k Gray, Fl. 1,^. 225. Near San Diego, California; 
Parry. 

Malvastrum Teurberi, Gray, PI. Thurb. p. 307. Santa Cruz valley, Sonora ; July ; TImrhcr. 
I can find no sufficient characters for distinguishing this from M. Monroanum. 

Malvastrum coccinedm. Gray, PI. Fendl. p. 24. Q-ravelly and sandy plains on the Limpia, 
Rock creek, and Eio Grande ; also in New Mexico, Chihuahua, ami on the Gila. 

Malvastrum pedatipidum. Gray, PI. Wright, 1, jd. 17. Frontera, Texas; March; Bigehio, 
Parry. 

Malvastrum lbptopiiyllum, Gray, PI. Wright, 1, p. 17. Ojo de Vaca, &c. Chihuahua; 
Thurber. Our specimens are smoother than Wright's plant. 

CALLiiiiiOE involucrata, Gray, PI. Fendl. p. 15, Gen. III. t. 117. Moist grounds, valley of 
the Pecos, and between Eagle Pass and Laredo, Texas. March — April ; Scholt. 

Sidalcba nuHlLls, Gray, I. c. p. 23. Sida malvfeflora, Hook. <& Am. Bot. Beechey,p. 326, 
non Lindl. Montei-ey and near Santa Barbara, California ; Parry. San Diego, Tkurher. 

SiDALCEA MALV^fiFLORA, Gray, FL Wright, 1, p. 16. Sida malvreflora, Mog. d Sesse. DO. 
Prodr. I, p. 194. Marshes of the Limpia and hills at the Copper Mines ; July ; Bigeloio. Ojo 
de Gavilan and Rio Mimbres ; Thurber. El Podrero, Sonora ; June ; Schott. It sometimes 
occurs with white flowers. 

Sida hedbracba, Tmr. in Gray, Fl. Fendl. p. 23, ad not. New Mexico, on tlie upper Rio 
Grande, Sonora, and California ; northward to Oregon. 

Sida pilicaulis, Torr. & Gray, Fl 1, p. —. Koeky and gravelly hill.-;, Howard Springs, and 
between Van Horn's Wells and Muerte ; Bigehiv. 

Sida pilicaulis, var. setosa. Gray, PL Wright, 2, ji. 22. Rock creek and near the Great 
Canon of the Rio Grande ; Bigehw, Parry. 

Sida eilipes, Gray, PL Wright, 2, p. 19, Crevices ol' rocks and ravines between the Pecos 
and San Pedro ; Schott. El Paso ; Bigdow. 



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BOTANY, 39 

yiDA LEPiDOTA, Gray, I. c. p. 18, Plains near Leon Springs ; September ; Bigeloio. Cocos- 
pera, Bonora, and east of Sierra Madre ; July — Sei>tember ; Schott. 

SiDA PHYSOCALYX, Gray, PI. lAndh. 2, p. 163. Hills between Van Horn's Wella and Muerte; 
May — July ; Bigdoio. Kear Laredo ; Schott. Fronteras, Sonora, and near the city of Parras, 
State of Coahuila ; Thurier. 

SiDA LONQiPBS, Gray, PI. Wright, 1, p. 31. San Pedro valley and on the Cibolo crecli, also 
near Leon Springs ; July — September ; Parry, Bigelow. 

SiDA Elliotth, Torr. <fi Gray, Fl. '\,p. 232. Eocky places on the Limpio and at Van Horn's 
Wel;8, July ; Bigeloie. A dwarf form was found by Thurber at the Copper Mines. 

Anoda hastata, Cav.; Gray, Gen III. 2, t. 124. Valley of the Cocosiiera, Sonora ; Septem- 
ber — October ; Schott. Mount Carmel, near tlie Eio Grande, Chihuahua, November ; Parry, 

Anoda pentaschista, Gray, Fl. Wright, 2, p. 22. Zuni mountains, August— September ; 
Bigelom. Presidio del Norte and further down the Rio Grande ; Parry. Sonora ; Thurber. 

Anoda Wriqhtii, Gray, PI. Wright, 2, p. 22. Dry ravines along the upper Eio Grande, also 
rocky places on the Limpia ; Bigelow. 

Aeutilon holosericekm, Scheele in Linnma, 21, p. 471. Rocky hills between Painted Oamp 
and Wild Eose Pass, also on Turkey creek ; July — November ; Bigelow. 

Abutilon Tuxense, Torr. d Gray, Fl. 1, p. 231 ; Gray, PI Wright. Rocky hills on the 
Cibolo and mountains of Muerte, &c. ; July—August. Valley of the Oocospera- and Magdalena, 
Sonora; Schott, Thurber. 

Abdtilon crispum, Don.; Gray, Gen. III. 2, (. 126. Bogenhardia crispa, " Eeichenh. Eepert. 
Herb. 200, No. 7636." Rocky hills and ravines along the Eio Grande and its tributaries. 
Bachimba, Chihuahua, and Magdalena, Sonora ; Tlmrler. Specimens from the latter station 
have remarkably villous stems. 

Abutilon Tiiurberi, Gray, Fl. Thurb. p. 307. Shady places, Magdalena, Sonora ; October ; 
Thurber. 

Abdtilor parvulum. Gray, Fl. Wright, 1, p. 21. I'lounce mountains and rocky hills between 
Van Horn's Wells and Muerte ; June — July; Bigelow. 

Wissaddla mucronulata. Gray, PI. Berland. ined. On the Eio Grande, below Eeynosa, 
October ; Schott. Leaves cordate, entire, green, and smoothish above, paler and somewliat 
velvety underneath. Peduncles paniculately several-flowered, the flowers very small, with 
obovate petals. Carpels obovate, smoothish, with 2 short horns, 4 — 5 seeded. 

Spu^ealcba angdsxieolia, Spach; Gray. PL Wright, 1, p. 21. S. stellata, Torr. dGray, Fl. 
1, p. 228. Moist, alluvial soils. Western Texas ; June. On the Fronteras, Sonora ; June- 
November ; TJiurber, A broad-leaved form was found by Schott at Eagle Pass. 

Sph^ralcba hastatula. Gray, I. c. p. 17. On the Eio Pecos; Thurber. 

Sphjeralcea incana, Torr. in Gray, Fl. Fendl. p. 23; PI. Wright, 1, p. 21. El Paso; 
Parry ; and Laguna los Putos, Chihuahua ; Thurber. San Elceario, &c. ; Bigelow. Var. dis- 
secta. Gray, I. c. p. 21. Chihuahua; Schott, Thurber. 

Sphjeralcea Eendleri, Gray, I. c. Low grounds along the Gila ; SckoU. Santa Cruz, 
Sonora ; Thurber. 

Pavomia WRiQHTir, Gray, Gen. III. 1,p. 76, t. 130 ; PI. Llndh. 2, p. 161. Shady borders of 
the tributaries of the lower Eio Grande ; Schott, Bigelovj. 



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40 rfNITED STATES AND MEXICAN BOUNDARY. 

Malvaviscus DBiTMMONDir, ToTT. <& Gray, Fl. \,p. 230; Gray, Gen. III. 2. t. 131. Sotith- 
western and central Texas ; Thurher, Schptt. The baccate fruit is red when ripe. 

Kostelbtzkya (Oethopetalum) paniculata, Benth. PL Hartw. p. 285. Mountain pass near 
Cocospera river ; September ; Schott. Corolla, deep rose color. Eenthani regards this 
plant as the type of a distinct section or, perhaps, genus, differing from Kosteletzkya in the erect 
convolute petals. 

Hibiscus CouLTBiii, Harvey in Gray, Fl. Wi-ight, 1, p. 23. Western Texas, near the Eio 
Grande ; June— October. 

Hibiscus dbnudatus, Benth. Var. isvolucellatus, Gray^ I. c. p. 23. Gravelly table-lands 
of the Rio Grande, from El Paso down to the Cibolo ; May — September ; Parry, Bigelow. 

Hibiscus cardiopiiyllus, Gray, I. c. p. 22. Dry limestone hills near the mouth of the Pecos ■ 
September— October ; Schott, Bigeloiv. 

TnuasERiA thespesioidis, Gray, PI. Thurher, p. 308. (Tab. VI.} Canon near Cocospera and 
Ymuris, Sonora ; October — November ; Schott. Mr. Schott informs me that this plant is called 
Algodoncello by the Sonorians. 

RYTTNERIACE^. 

Melooiiia PTRAMiDATA, iimw ; Gray, Gen. III. %. p. 134 and PI. Lindh. p. 165. Western 
Texas ; Schott, Bigelow. 

Melochia tombstosa, lAnn; DO. Prodr. l,p. 490. On the lower Eio Uraade ; Schott. 

Waltiieeia detonsa, Gray, PI. Wright, 2, p. 24. Magdalena, Sonora ; Thurber. 

Hekmansia Tbxana, Gray, Gen. lU. 2, p. 88. t. 135. Ravines of Devil's river and plains 
near Howard's Spring ; also at the month of the Pecos ; September — October ; Bigelow. 

AyEisiA PUSILLA, Linn; Gray, PI. Wnghf. 1, p. 24, 2, p. 24. Dry rocky ravines. Van 
Horn's Wells, June; Parrj/ ; Sonora ; Thurher. 

Atekia miokophylla, 6h-ay, I. c. Rocky hills of the Rio Grande, near and below El Paso ; 



CoRcnoRUS ptLOLOBUs, iiWe ; Gray, PI. Wright, 2, p. 24. Gravelly beach of the Island of 
Lost Rocks, lower Rio Grande, September ; Schott. Santa Rosa valley ; Parry. 

LINACEiE, 

LiKUM MUL'iiCAULB, Iloolc. in Torr. & Gray, Fl. l,p. 698; Engelm. in Gray, PI. Wright, 1. p. 
2*1. Valley of the Limpio ; July ; Bigelow. 

LiNUM Berlanhieei, Book. Bot. Mag. t. 3,480 ; Engelm. I. c. Live Oak creek and rocky 
places on the Eio Grande ; also in Chihuahua. 

LiNUM PERBNNB, Linn ; Engelm. I. c. Plains between the Limpia and the Rio Grande, and 
westward to the Gila. 

LiNUM EIGIDTJM, Pursh; Engelm. I. c. Gravelly hills from El Paso to San Eleazario ; April — 
June. 

LisuM RUPESTRB, Engclm. in Gray, PI. Lindh. 2, p. 232. Eocky places on the Limpia and 
Rio Grande, 



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OXALIDAGE^. 

OxAT.Tfl Berlandiert (n. sp.): eaulescens, pilosa; foliis trifoliolatis, foliolis oblongisv. obovato- 
oblongis plerunique omarginatis terminali valde petiolulato ; pedunculis axillaribus subtermi- 
nalibusqne 3— S-florie folium sub^c[uantibus ereetis ; petalia flavis. Sandy places in the 
prairies between Laredo and Ringgold Barracks, June ; Schott. Eio Nueces, Berlandier, No. 
1094 and 2524. Stems arising from a slender subterraneau rhizoma, erect, 4 — 6 inches high, 
branching towards the base. Lateral leaflets 3—4 lines, terminal 5—6 lines long. Filaments 
unequal, 5 of them hairy, twice as long as the alternate smooth ones. Cells of the ovary about 
4-ovuled. Capsule aubglobose- ovate, scarcely as long as the sepals, strongly 5-angled ; the cells 
one-seeded. Seeds strongly tuberculosa- ribbed. Allied to 0. psoraleoides. The only species of 
this section hitherto found within the limits of our Flora. 

OxALis DiCHONDKEFOLiA, Gray, PI. Wright. \,p. 27. Sides of dry, calcareous hills near the 
lower Rio Grande ; Schott. Plains of Los Muros ; Bigeloiu. 

OxALis Drummondii, Grmj, Fl. Wright. 2, p. 25. 0. vespertilionis, Torr. & Gray, Fl. l,p. 
679. Plains between the Leona and lower Rio Grrande ; also in Souora, near the San Pedro 
river. 

OxAijs viOLACEA, Linn.; Torr. d Gray, PI. I, p. 211. Between the Pecos and Devil's river and 
the Rio Grande ; Copper Mines, New Mexico ; Bigelow, Parry. Usually taller than the eastern 
plant, but with smaller and more numerous flowers. 

OxALis Wrighth, Gray, PI. Wright. 1, p. 27, & 2, p. 25. Near Rock Creek, and Presidio 
del Norte, July— August ; Bigehw. Santa Crua valley, Sonora ; Tkurher. 

OxALis DECAPJiYLLA, R. B. K. ; Gray, I. c. 2, p. 25. Copper Mines, New Mexico, August ; 
Bigelow. 

OsALis STRICTA, Linn.; Torr. Fl. N. York, 1, p. 123. Rocks along the Leona and sandy 
banks of the lower Bio Grande, March — November. 

GERANIACE^. 

GBRANroM Caroltnianum, Linn.; Torr. & Gray, Fl. 1, p. 207. Central and western Texas; 
also in Chihuahua and various parts of California. 

Geranium caspnosuM, James; Gray, PI. Fendl. %>. 25. Organ mountains ; Bigehiu. Hills 
at the Copper Mines, June— August; Bigeloto, Thurber. "Flowers usually purple, but 
sometimes quite white." Thurber. 

Erodium Texasum, Gray, Gen. III. 2, (. 151. Northern New Mexico, western Texas and 
borders of the Gila. 

Erodipm oicutaridm, JSsrit. ; DC. Prodr. l,p. 646. Common in New Mexico and throughout 
Sonora and California ; probably introduced by the Spaniards. 

Erodium MACROPHYLLUM, Sook. & Am. Bot. Beeckey,p. 327. California, (station not recorded,) 
Parry. The leaves in our specimens are much smaller than they arc described by Hooker & 
Arnott, being scarcely more than an inch long. 

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ltmnanthace^:. 



LlMHANTHES DouoLASli, B. Br.; ToTT. <lt Gray, Fl. "I, p. 209, Benicia, Califbruia, March ; 
Thurber. 

ZYGOPHYLLACEiE. 

Laerea Mexicana, Moric. ; Torr. in Emory's Eep.,p. 138, /. 3 ; (ttoii. Gen. III. t. 147, Along 
the boundary Hue from the Eio Grande to California. 

PoBLiERA ANGUSTiFOLiA, Gray, PI. Wrigkt. 2, p. 28. Q-uIacinn angnstifolium, Enyelm. Plains 
near Eagle Pass, Bigelow, Deadman's Hole ; Parry. 

Faqonia Oalifornica, Benth. Bot. Sulph.,p. 10.; Torr. in Pad/. E, R. Ex., Expe. pi. 6, p. 
359, t. 1. Rocky and hill sides of the lower Colorado, California, February ; Schott. 

GiUiACUM CouLTEBi, Gray, PI. Thnrh. p. 312. Hills between K,iyon and Ures, Sonora ; 
Thurber. 

KALLSiRffiMiA aEANMFLOKAj Tofr. in Gray, PL Wrighi. \, p. 26. Borders of the Eio Grande 
in western Texas ; Chihuahua and Sonora, July. Mr. Schott states tliat it is called Mai de Ojo 
by the Sonoriane. 

Kallstrcrmia maxima, Torr. & Gray, Fl. I, p. 213. Common along the Rio Grunde, and 
westward throughout the Mexican States and southern California. 

RUTACE^:. 

KoEBEKLisiA SPIKOSA, Zucc. ; Gray, PI. Wright. \,p. 30, <& 2,^. 26. Rich soils in various 
places along the Rio Grande and in the Mexican States westward, May — August. "Ju 
fovorable situations this shrub sometimes attains the height of 8 or 10 feet," Thurber. 

Peganum Mexicanum. Gray, I. c. 1, p. 30, adnot. Low places near the Eagle mountains, 
June ; Btgelow. El Gailo, Chihuahua, November ; Tlmrher. 

TuAMNOSMA Texanum. Rutosma Texanum, Gray, Gen. Til. 2, p. 114, t. 155. Hills between 
the Pecos and Devil's river and the Kio Grande ; also along the latter river from Ei Paso down- 
ward, and in western New Mexico, Sonora, etc., flowering throughout the season. 

Thamnosma MONiANUM, Torr. d Frem. in Frem. 2rf li&p., p. 313, Sierra Tule, Sonora; 
Schott. San Felipe, California, May ; Thurber. 

AsTROPHYLLUM DUMOSUM, Torr. hi Bot. Pope's Report, p. 161. Mountains about thirty-flve 
miles below El Paso, in Chihuahua, July (in fruit) ; Bigelotv. Borders of the Eio Mimbres, Er. 
Henry, United States army. Western slope of the Sierra del Pajarito, Sonora, July, (Just past 
flowering,) Schott, (not on the Rio Grande, as erroneously stated in the Botany of Captain Pope's 
Report.) Since the description c[uoted above was written, other specimens of this remarkable 
plant have been received, but none of them with perfect flowers. In one or two instances 
withered, imperfect flowers were found, and we can now give a nearly complete cliaracter of the 
genus, which rather belongs to the Diosme;e than to the true Rutacere. 

ASTROPHYLLUM. 

Calyx 4 — 5-sepalus, deciduus ; sepalis obtuais. Petiila 4^5, obovata. Stamina 8 — 10. 
Ovarium sessile, disco hypogyno 8 — 10-lobo insidens, 4 — 5-lobuni, 4 — 5-locHlare ; loculia 



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2-oviilatii=. Styli tot qiiot carpella, coaliti, demiim interne distinct!. Stigma eapitattim, i — 5- 
lobatum. Capeiiire abortu sepius 2, basi subcoalitae, seseiies, semibivalvia. Semina plerumque 
Rolitaria aiibglobosa. Fnitex humilia, graveolene, ramosissimus ; foliis oppositis petiolatia, 
palmatim 5 — 10-foliolatis ; floribus albis in axillis summis solitariis vel subumbellatis. 

A sbrub 3 to 6 feet high, with numerous pubescent, crowded, opposite branches. Leaves 
opposite, (rarely sub-opijosite), pubescent, exstipulate ; petiolcB, 6— 10 lines long ; leaflets mostly 
longer than the petioles, marked (as are also the petioles and younger branches) with prominent 
conspicuous glands. In ail the specimens from the Rio Grande there are 6 to 10 leaflets, which 
are narrowly linear {scarcely a line wide), and sub-coriaceous ; in those from Sonora there are 5, 
which are twice as broad, and thinner. These glands, on the leaflets, are somewhat distant and 
marginal. Flowers perfect. Pedicels 8 — 10 lines long, mostly near the extremity of the 
branches, either solitary or 2 to 4, and somewhat umbellate. Sepals 4 — 5, short and semiovate, 
ciliate on the margin. Petals inserted at the base of the shorter stamens, 3—4 times as long as 
the calyx, obovate, narrowed at the base. Stamens mostly 8 ; filaments naked, the alternate 
ones longer, compressed ; anthers ovate, fixed by the base, opening longitudinally. Disk 
produced into 8 — 10, nearly equal glaudular lobes, which are without pores. Ovary hairy, 
4 — n-lobed, 4 — 5-cel!ed ; the cells produced above into a short obtuse beak, exterior to the 
style ; each cell containing 2 collateral hemitropous ovules. Styles short, at first combined, 
but afterwards (and especially in the unfructified ovaries) distinct below ; stigma of 4 — 5 
capitate lobes. Fruit capsular ; only two of the carpels usually ripening ; these are broadly 
ovate, compressed, dotted with brown impressed glands, mucronate with the base of the style ; 
the beak, which in the ovary was at the summit of the carpel, becoming, in the mature fruit, a 
dorsal tooth. At maturity the carpels open nearly the whole length of the dorsal suture, and 
down the back as far as the tooth. The endocarp also separates almost entirely from the epicarp. 
Seeds mostly solitary in each cell, globose-ovate, black and shining. Embryo nearly straight in 
the axis of fleshy albumen ; cotyledons roundish- ovate, flat, with a very short radicle. A very 
distinct geuus. 

PiTAViA (Gastkostyla) ddmosa, Nutt. in Ton-, tfc Gray, Fl. 1, p. 215. San Diego and San 
Pasqual, California, Fehr. ; Parry, Thurher. A shrub 2 — 3 feet high. Leaves pungent when 
chewed. Cymes 3-flowered, terminal, and on short lateral spurs. Calyx 4-parted ; the segments 
ovate, acute, coriaceous. Petals white, equal, oblong, sparsely dotted. Stamens 8 : filaments 
subulate ; anthers somewhat reniform, innate, retrorse. Ovary solitary, seated on a fleshy 
suh-globose slightly lobed disk. Stigma capitate. Fruit 1 — 2-Beeded, testa thick and coriaceous. 
Embryo curved, in rather thin fleshy albumen. This plant (as was remarked in the Flora of 
N. America) is hardly a congener of Pitavia, ft may form a suh-genus, distinguished by its 
hermaphrodite flowers, solitary ovary, lateral style, and curved embryo, 

Zanthoxylum Caroliniantjm, Lam.; Torr. cfe Oray, Fl. 1, ^.24. Var. foliis brevioribus 
ovatis, &c, ; Gray, PI. Wright. 1, p. 30. Head waters of the Nueces ; also ravines on Devil's 
river and near Eagle Pass, Texas, March (in flower) — September (in fruit); Bigelow. 

Zanthoxyltjm Pterota. H. B. Kth. Nov. Gen. <& Sp. 6, p. 3. Rocky places and hilis near 
Santa Rosa, Cohahiiila, February; Bigelow. Fort Mcintosh, on the Rio Grande, May (fruit); 
Schott. 

Ptbj.ba TBii'OLiATA, lAnn.: Torr. & Gray. Fl. 1, p. 225, and B.p. 680. Rocky places, Fron- 



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44 UNITED STATES AND MEXICAN BOUNDAKY. 

tera, Texas, and on the Mimbres, New Mexico ; Bigdoio. It is usually a shrub of from 3 to fi 
feet high, but it sometimes occurs twenty feet. 

Ptelea angustifolia, Benth. PI. Harhv. p. 9; Gray. PI. Fendl. p. 28. Limestone hills 
around Ringgold Barracks ; Sckott. Mountain ravines, El Paso ; Thurber. 

COCHLOSPERMEiE. 

Amoreuxia Scheidiana, Planch, in Hook. Lond. Jour, Bot, 6, p. 140, t. 1 ; Gray, PI. IVrighl. 
2, p. 26, t. 12, A. Santa Cruz valley, Sonora; Thurher. 

Amoreuxia Wrighth, Oray, I. c. A. Scheidiana, PI. Wright. 1, p. 29, t. 3. B. excl. syn. 
In rich soil. Eagle Pass, June ; Sckott. Hills and plains near the mouth of the Pecos, Octo- 
ber (fruit) ; Biyelow. 

ANACARDIACEit;. 

Ehus vmsNe, Lindh. in Gray, PI. Lindh. 2, p. 159 ; PI. Wright. 1, p. 31. Limestone roclis 
on Devil's river, and at the mouth of the Pecos ; Bigeloio. 

Khus microphylla, Engtlm. in Gray, PI. Wright. 1, p. 31, Ravines along the Rio Grande, 
from E! Paso down to Eagle Pass ; also in Chihuahua and Sonora. 

Rhus trilobata, Nutt. in Torr. & Gray, Fl. 1, p. 219 ; Gray, PI. Wright. 1, p. 31. Northern 
New Mexico and the Valley of the Rio Grande ; also in Sonora and California. A form with 
the leaves velvety-pubescent occurs at the Copper Mines and on the Organ mountains. New 
Mexico. 

Rhus copallina, var. lahobolata. Gray, Fl. Lindh. 2, p. 158, Hills and rocky places between 
the Limpia and the Rio G-rande, July ; Bigelow. 

Rhus Toxicodendron, Linn. ; Torr. & Gray, I. c A variety with narrow leaves was found 
on the Sierra del Pajarito, Sonora, by Sckott; and at the caiion of Guadaloupe, by Capt. E, K, 
Smith. 

Rhus diversiloba, Torr. & Gray, I. c. E. lobata, Hooh. Fl. Bor.- Ainer. 1, p. 127, t. 4C ; 
Lindl. Bot. Reg. (n. ser.) 31, t. 38. In various parts of California ; freq^uent. 

PiSTACiA Mbxicana, M. B. K. Nov. Gen. & Sp. 7, p. 22, /. 608. Rocliy ravines near the mouth 
of the Pecos, western Texas, October (fruit); Bigeloio. A small tree. 

LiTHR^A LAUBiNA, Walp. liepert. \,p. 550; Torr. PI. Whippl. I. c. p. 73. Ehus (Maloama) 
lanrina; Nutt. in Torr. dGray, Fl. l,p. 219. (Tab. VII.) San Diego, California; Parry. 

Styphonia IHTEGEIFOLIA, Nutt. in Torr. <& Gray, Fl. I. c. & Sylv. Z,p. 4, t. 82 ; Torr. in Pad/. 
B. Road Expl. T, Bot. p. 8, (. 2. Santa Barbara and San Diego, California; Parry, Thurher. 
Leaves very variable in size and outline, especially upon the young shoots. S. serrata (Nutt.) is 
not distinct. 

ScHiNUS MOLLE, lAnn. Sp. p. 1467. Lower California, near the boundary line ; Parry; and 
at the Mission of San Luis Rey ; Tkurhcr. It is common also in all the Mexican States, but is 
probably not indigenous. Mr. Thurber informs me that in California it is called Pepper Tree 
by the residents, the berries having precisely the taste of the common black pepper. 

SIMAEUBACE^i;. 
Castela NiCHOisONi, Hooh. Bot. Miac. \,p. 271, i. ofi; Gray, Gen. III. 2, l. 158. Dry plains 
and Mils, western Texas, along the Rio Grande, Pebruary — March; Patry, Thurher. Mier 
Neuvo Leon ; Thurber. 



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45 



HoLACAHTHA Emoryi, Gray, PI. Tkurber.p. 310. (Tab. VIII.) Near Sonoita, Sonora, August 
(with fine fruit) ; Schott. Tho description of this remarkable plant, by Dr. G-ray, is so complete 
and so accurate that I have nothing to add but a good figure by Spragne. 



Vms BiPiNNATA, Torr. <& Gray, Fl. l,p. 243. Bauka of Escondida creek, near Eagle Pass, 
and at Rock creek, western Texas, July — September (in fruit) ; Bigelow. 

Vms iNCiiA, Nutt. in Torr. d; Gray, I c. On the lower Rio Grande, and in Cocospera valley, 
Santa Magdalena, Sonora ; Schott. " It is mixed with cochineal and used by the Mexicans to 
dye red," 

Vms iESTiVALie, Fl. 2, p. 230 ; Torr. ((: Gray, I. c. Central Texas ; Wright. On Mount 
Ben Moore, New Mexico ; Bigelow. 

ViTis Califoenica, Benth. Bot. Sulph, p. 10. San Diego and other parts of California, July ; 
Parry. Sonora; Tkurher, Oapt. E. K. Smith. 

Ampblopsis qxiikqubfolia, Michx. Fl. 1, p. 159. On the Mimbres and at tho Oopper Mines, 
New Mexico, Juno— July ; Bigdov}. 

RHAMNACE^-:. 

Adolphia infb&ta, Meisn. Gen. p. TO ; Gray, PI. Wright. I, p. 34. Monterey and near San 
Diego, California, March—May ; Parry. Hills near Rock creek, Texas ; July (flowers and 
fruit) ; Bigelow, Parry. 

Cbanothus GKBGon, Gray, PI. Wright. 2, p. 28. Guadaloupe Pass ; April ; Sonora ; Parry; 
and San Luis mountains in the same State ; Oapt. E. K. Smith. 

Ceanothus ovalis, Torr. dt Gray, Fl. l,p. 265. Dry ravines, valley of the Pecos, Texas, 
and San Felipe ; Bigeloio. 

Cbanoihus divaricattis, Nutt. in Torr. <& Gray, I c, var. eglandulosus, Torr. in Bot. Whipp. 
Rep. I. c. p. 15. Mountains eastof San Diego, California, June (fruit) ; Parry. 

Ceanothus soREDiAcus, HooJc. d Am. Bot. Beechey, p. 329 ; Torr. <€ Gray, I. c. On the 
conglomerate and sandstone hills above San Diego ; Parry. C. Lobbianus, Sook. Bot. Mag. t. 
4811, seems to be hardly distinct from our plant. 

Cbanothus thyesiixorus, Eschsch. in Mem. Acad. St. Petersb. 1826; Torr. & Gray, Fl. I. c. 
Common in the neighborhood of Monterey and San Diego, as well as in many other parts of Cali- 
fornia, where it is known by the name of California lilac. 

Cbanothus spisosus, Nutt. I. c. Near Santa Barbara, California ; March ; Parry, Flowers 
white, with a tinge of blue. Leaves sometimes distinctly toothed at the apex. The branches 
are not thorny in our specimens, 

Ceanothus cdnbatos, Nutt. I. c. C. macrocarpus, Nutt. I. v. Near San Luis Obispo and Santa 
Barbara, California, April ; Parry. There can be no doubt of the propriety of uniting the 
two species here quoted. We have specimens collected from numerous localities, which show a 
transition from the one to the other, 

Cbanothus rkiidds, Nutt. I. c; Benth. PI. Hartw. p. 302; Lindl. dt Paxt. Fl. Gard. 1, p. U, 
i. 51. (Table IX.) On dry hills, Monterey, California, April ; Parry. An evergreen shrub 
about 5 feet high, with rigid branches. The leaves vary greatly in form, being sometimes 
broadly obovate and often deeply emarginate. 



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Obanothtjs dbntatus, Torr. & Gray, Fl. I. c: Lindl. & Po.xt. Fl. (lard. I, p. 17, (, 4. 
{Table X.) Sandy soils around Monterey, California ; Parry. A low bush. Oar specimens 
correspond with Douglas's plant, except that in the latter the flowers are said to be white, 
whereas they are blue in the former. They had, no doubt, faded in the specimens from which 
the original description was drawn, 

Geanotiitjs cBASSiFOLlus, (n. sp.) : friiticGsus, ereotns ; ramulis teretibus albo-tomentosis ; Ibliis 
ovatis obtusiusculis integerrimis crassis penninerviis subtus dense albo-tomentosis glabris minute 
papillaris opacis; thyrsis subsessilibue brevibus subumbelliformibus densifloris. (Table XI.) 
Mountains south of Los Angelos, February ; Parry. A shrub 4 to 5 feet high, much branched. 
Leaves 1 — 1\ inch long, remarkably thick and coriaceous, revolute on the margin when dry, 
pale dull green above and appearing rough like shagreen under a lens ; petiole ii — 3 lines long, 
thick. Clusters of flowers terminal, and in the axils of the upper leaves. Calyx and corolla 
white. Ovary marked with 3 minute protuberances. Fruit not known. 

Fbangula Cakoliniana, G-ray, Gen. III. 2, p. 178, *. 167. Rhamnus Carolinianus, Walt. Fl. 
Car. p. 101. Banks of streams, Los Muros, &c., Western Texas ; Bigdaio. 

Frangula Californica, Gray, I. c, (fe PI. Wright. 2,^. 28. Mountain ravines near Camp 
Bache, Western Texas; Bigehto. Sonora; Schott, Capt. E. K. Smith. Monterey and San 
Diego, California; Parry. Variable in the form and pubescence of the leaves. We quite agree 
with Dr. Gray, that this species includes Rhamnus Californicus, Ench., R. oleifolius. Hook., R. 
laurifolius, Nidt. R. leucodermis, Nutt., and R. tomentellus, Benth. 

Rhamhus cboceus, Nuit. in Torr. if; Gray, Fl. 1,^. 261. Around Monterey and San Diego, 
also on the mountains of southern California ; Parry. The leaves vary from | to 1^ inch in 
length, and from obovate-oblong to broadly ovate. The under surface is always yellowish. 
The fruit in Dr. Parry's Bpecimene is all 2-seeded. 

ZiZYPHUS Paruti, (n, ep.) : glabra ; ramis spinosis ; ibliis obovatis integerrimis sub-coriaceis 
penninerviis ; pedunculis uniiioris, fructiierie recurvis ; drupa sub-exsucca ovata apiculata 3-locu- 
lare ; nuce crassissima ossea 3-Ioculari 3-sperma. Gravelly ravines near San Felipe, California, 
June (in fruit) ; Parry. It was afterwards found at the same place by Mr. Thurber. A shrub 

4 fi leet high, much branched ; the branches smooth, flexuous, and armed with numerous 

slender leafy spines. Leaves 8—12 lines long, obtuse or sometimes retuse, abruptly tapering at 
the base into a short petiole ; stipules minute, subulate, deciduous. Only a solitary flower was 
found. This was minute and pentaraerous, the very small concave petals partly embracing the 
stamens. Peduncles solitary, or sometimes 2 — 3 together, arising from short branches or spurs; 
those of the fruit about half an inch long and recurved. Drupes fi—S lines long, with a short 
abrupt point, lemon yellow, the pulp very thin. JSutshell extremely thick and hard. Seeds 
narrowly oblong. Albumen very thin. Embryo linear, oblong, green. This must be a very 
rare plant, as it has been found but twice, and in both cases near the same spot. In its nearly 
dry 3-celled Iruit and extremely thick shell it resembles Z. xylopyra of India. 

ZizYPHUS OBTUSiFOLiA, Gray, Gen. III. 'A, p. 170, t. 1B3 ; & PI. Lindh. 2, p. 168. Dry hills 
and banks from El Paso to Eagle Pass, on the Rio Grande ; March — June ; abundant. 

ZlzYPiius LYCioiDES, Gray, I. c. Near Elceario, on the Rio Grande, June (in fruit) ; Parry. 
Valley of the Gila ; Thurber. Dr. Gregg found it between Mataraoras and Mapini. The fruit 
is black and somewhat astringent, but edible. 



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BOTANY. 47 

COKDALTA SPATHIILATA, Gray, PI. Wright. 1, p. 32. Eaviues on tho Rio Concha; Bigdow, 
Eagle Pass, Texas, and Sonora ; Scliait. 

CoNDALiA OBOVATA, HooTc. Ic. t. 287 ; Torr. dc Gray, Fl. 1, p. 685 ; Gray, Gen. 111. 2, t. 164. 
Sandy plains, Eagle Pass, and upward to El Paso, April; Bigelow. Tucson, Sonora; Parry. 

CoLUBRiNiA Tbxbnsis, Gray, PI. Lindh. 2, p. 169 ; PI. Wright I, p. 33. Plains between the 
Pecos and the Bio Grande. The leaves on the young shoots are sometimes i inches long and 'i 
inches wide, but on the older tranches they are much shorter. 

KABWiNSKrA HuMBOLDTiAKA, Zucc.; Gray, PI. Wright. 1, p. 72, Between tlie Rio Graude and 
the Pecos and Devil's river ; May — July. 

CELASTRACEJ-:. 

iiloiiTONiA SBAiiRELLA, Cray, PI. Wright. 2, p. 28. Mountains of El Paso and ol Chihuahua, 
opposite San Elceario, May — June ; Parry, Bigelow. 

MOBTONiA SEMPBRViRENS, Gray, PI. Wright. I, p. 35, t. 4. On the Pecos, western Texas. 

MORTONU Geesgii, Gray, I. c. {adnot.) Calcareous hills, Ringgold Barracks, May ; Schott. 

Glossopetalon spinescens, Gray, PI. Wright. 2, p. 29, t. 12. B. Mountains and rocky places, 
El Paso, March ; Bigeloxc. 

Maytbnus phyllanthoides, Benth. Bot. Sulph. p. 54. Lower Eio Grande (in Iruit) ; Schott. 
A native also of the bay of Magdalena, California, and of Key West, Florida, Cotyledons 
thick, and albumen very thin in this species. 

Pachystima MYEStNlTES, Ea/.; Gray, PI. Fendl. p. 2Vl. Sides of Ben More, New Mexico, June ■ 
Bigdoxv. 

Sch^fpbria cunbipolia. Gray, PI. Wright. 1, p. 35. Western Texas, along tlie lower Rio 
Grande, March (male flowers) ; Schott. 

ACERACEtI:. 

Acer mackopiiyllum, Pnrsh, Fl. 1, p. 267 ; Hook. Fl. Bor.-Avi. 1, -p. 112, i. 38, Mountain 
ravines, Santa Barbara, California ; Parry. 

Negundo acbroides, Moench; Torr. & Gray, Fl. l,p. 260. N. Californicum, Torr. <& Gray, 
I. c, Mitt. Sylv. 2, p. 90, (. 72. In various parts of California ; Pwry. 

SAPINDACEiE. 

Sapindus maeginatus, Willd; Gray, Gen. III. 2, t. 150. Along the Rio Crande and its 
tributaries; also near the Copper Mines, New Mexico, and in Sonora. 

Caediospekmum Halicacabtim, Linn. Western Texas, and on the lower Eio Grande ; Schott. 

Seejania incisa, (n. sp.) foliis impari-bipinnatis ; pinnis bijugis trifoliatia ; foliolis ovato- 
rhomboideis serrato-incisis utrinqne pubescentibus, petiolis subalatis ; carpellorum alis semi- 
oblongis. Mountains of Santa Eosa, Cohahuila ; Bigelow. A vine 3—8 feet long. Leaflets 
1~]^ inch long, acute at each end, with 2—3 coarse teeth on each side ; the petiole more or 
less distinctly winged. Peduncles about two-thirds the length of the leaves. Panicle an inch 
or more long, racemiform, usually with 2 or 3 tendrils at the base. Sepals oblong. Petals 
strongly appendiculate on the inside. Fruit 1^ inch long, at first pubescent, but nearly smooth 
when old ; seed-bearing portion reticulately veined ; wings 3—5 lines wide, rather obtuse at 



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48 UNITED STATES AND MEXICAN BOUNDARY. 

the base. "We think thia can hardly be S. racemosa, nor can we refer it to any described species 
of Serjania. The leaves in all our specimens are pinnate, and the pinnre trifoHote. 

Urvillea Mbxicana, Gray, I. c. (adnot.) Rich soil, among rocks. Monterey, Neuvo Leon, 
Thurber. It was found some years before, in the same place, by Dr. Gregg, Dr. Edwards, and 
Ma.ior Eaton. Taumilapas ; Berlandier,'i^o. 2269. 

DoDOSJEAScjimhiASA, ScMecht. in Linncea, 18, p. 49. In various ])arts of Sonora , Thurber, 
SchoU. 

^scuLUS OALWoamcA, Nutt. in Torr. <&(pfray,Fl. l,ji. 251, dtSylva, 2, p. 69, t. 74. Newberry. 
Bot. WHMamaon in Pacif. B Boad Expl. 6, p. 21, _fig. 1 . Near Monterey and San Luis Obispo, 
California, May ; Parry. 

Unonadia speciosa, Endl. AtaU. t. 36 ; Gray, Gen. III. 2, t. 178 <& 179. Dry ravines, Organ 
mountains of New Mexico, March — April; Bigelmo. Hueco monutains, Texas ; Thurber. 

MALPIGHIACEiE. 

Galphimta ltnifolia, Gray, Gen. III. 2, p. 196, t. 173. Limestone hills and plains on the 
Rio Grande and its tributaries, western Texas. 

Malpighta glabra, Linn,; 1)0. Prodr. 1, p. 57S. On the lower Rio Grande, September — 
October (flowers and fruit) ; Scliott. Dr. Edwards found it near Monterey, Keuvo Leon. It is 
a shrub 1~4 feet high, growing in densely bushy places, 

Janusia gracilis, Gray, PI. Wright. 1, ^, 38 ; <& 2, p. 30 ; To^-r. Bot. Parkes, in Pacific B, 
Road Expl. 7, P- 9, t. 1. From the Limpio mountains to El Paso, and west to Chihuahua and 
Sonora. 

Aspicarpa lohsipes, Gray, PI. Wright. 1, p. 38 c£ 2, p. 30. Rocky hills near the Limpia 
river, July — September ; Bigeloio. Sierra del Pajarito, Santa Cruz, Sonora ; Thurber, SchoU. 

Aspicarpa hyssopieolia, Gray, PI. Lindh. 2, p. 167; & PI. Wright. 1, p. 36. Limestone 
hills along the lower Rio Grande, October ; Schott. 

HirjEA septentrionalis, Ad. Juss. Monog. Malpigh. p. 309. Var. foliis rainoribussEe pisaime 
oblongo-lanceolatis, (?m^, PI. Thurb. p. 303 {adnot.) Between Reyon and Urea, Sonora; 
Thurber. Dr. Edwards collected it near Monterey, Neuvo Leon. It is a shrub 6 — 8 feet high. 

POLrGALACE/E. 

PoLYGALA PtTBEBULA, Gray, PI. Wright. 2, p. 30. Hills between Van Horn's Wells and 
Muerte ; and on the mountains of Leona ; June — August ; also at the Copper Mines, and on 
the Rio Mimbrea. 

PoLYGALA LiBDHBiMESi, Gray, pi. Lindh. 2, p. 150 ; (fe PI. Wright. 1, p. 39. Hills and plains, 
western Texas ; New Mexico and Sonora ; June — September. 

PoLYGALA OVATTFOLIA, Gray, PI. Wright. 1, p. 39. Limestone rocks on the Rio Grande from 
Eagle Pass up to the San Pedro and Pecos ; Schott, Bigehiv. 

PoLYGAiA ALBA, Nutt. Gen. 2, p. 87 ; Gray, PI. Wright. I. c. Gravelly hills on the Rio 
Grande from New Mexico to the lower river. Valley of the Santa Cruz river, Sonora ; Capt. E. 
K, Smith. 

POLTOALA scopARiA, H. B. K. Nov. Gen. 5, -p. 399 ; var, multicaulis, Gray, I. c. Hills and 
ravines at El Paso ; also at Eagle Springs, Texas ; BigelovJ, Parry. 



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POLTOAIJ HBMIPTETOOAKPA, Gray, PI. WrigU. 2, p. 31. Kocty hills ooir Camp Baclie, Texas, 
July ; Bigdow. Sierra del Pajarito ; Sckott. 

PoLYOAii MAtKADEKii, Grmj, l.e.\, p. 39. Hills on the Rio Grande, from EI Paso to Eaglo 
Pass ; June. 

PoiYOAlA NniKANA, Moc. d Sesse ; 1)0. Pmb. 1, p. 331. P. cneullala, Bmlh. I'l. Uartw. p. 
229. P. Oalifornica, MM. in Torr. & ^ay, Fi. 1, p. 6!!. (Tab. XII ) Near Monterey, May ; 
Parry. We have seen specimens of this plant with radical flowers, so that no doubt Nuttall's 
P. Oalifornica is the same as P. Nutkana. 

MojfunjA Wbiohtii, Oray, I. e. 2, p. 31. Copper Mines, New Mexico, Aug. ; Bigtlaw. 

KEAMEEIACE*. 

KRAMERrA LANCEOLASA, Torr. in Ann. Lye. N. York, 2, p. 168 ; Gray, Gm. III. 2, (. 185. 
Hill-sides along the Eio Sraude, from El Paso to Laredo, April— July. Caiion of Guadaloupe, 
Sonora ; Capt. M. K. Smith. 

Kramiria paeviiolia, Btnth. Bot. Sulph. p. 6, (. 1 ; Gray, PL Wriglil. 1, p. 42. Eavines and 
hills, western Texas, particularly along the upper Eio Grande and at Guadaloupe canon, 
Sonora ; Oapt. E. K. Smith ; also on the border of the California desert, near San Felipe, June ; 
Parry. Var. eamosissima, Oraj, I. c. Devil's river, Leon Springs, and Presidio del Norfo. 

Keameeia canesoms. Gray, PI. WHgU. I. o. (Tar. XIII.) Hills on the Bio Grande, from 
El Paso to the mouth of the Cibolo, June — July ; Bigdoiu. 

LEOUMINOSiE. 

VICIA PCLCIIEIEA, H. B. K. ; Var. foliolis majoribus, etc.. Gray, PI. WrigU. 2, p. 32. Hills 
at the Copper Mines, New Mexico, August ; Bigdow. 

VictA ExmuA, Nutt. in Torr. <t Gray, Fl. 1, p. 272. Hill-sides, southern New Mexico, Chi- 
huahua, and southern California, April — June. 

Lathyeus uneabk, Nutt. I. 0. On the Eio Mimhres and at the Copper Mines, New Mexico, 
June, (in flower and fruit ;) Bigdow. 

Lathyrus VESmns, NnU. in Torr. it Gray, Fl. 1, p. 2J6. Napa county, California, March ; 
Thurber. 

Latuyrus palustris, Unn. var, ? foliis elongatis angustis, etc. ; Gray, PI. WrigU. 2,^.32. 
Western Texas, and at the Copper Mines ; also in Cohahuila and Sonora. 

Latutrus polymoephus, Nntt. Gen. 2,^.97. In wet places, Sonora ; Thurher. 

Lathyeds TBNOSns, MuU. in WiOd. Sp. 3, p. 1092 ? In shady places near San Diego, Cali- 
fornia, May ; Thurher. A form with emarginate leaflets. 

Lathyem MARITrMns, Bigd. Fl. Bod. ed. 2, p. 268 ; Torr. & Gray, Fl. 1, p. 273. Near San 
Diego, March ; Parry. Peduncles, petioles, and calyx pubescent. Leaflets 8—12, mostly 
alternate, varying from ovate to elliptical-oblong, glabrous, scarcely half as large as in the 
eastern plant. Stipules broadly cordate-hastate, nearly as long as the leaflets. Peduncles 0— 
10-flowered. 

Phasbohis RBTOSnB, Benth. PI. Hartw. p. 11 ; Gray, PI. Uni.h. 2, p. 1)0. Valley of the 
Limpio, and near the Copper Mines, July — August ; Parry, Bigdow. 

Phabeolos WaiaHTII, Gray, PI. Wright. 1, p. 43. Mountains and roelty places along the 
middle Eio Grande, and at the Copper Mines, July— August. Dr. Bigelow found at Eagle 
Pass what seems to be a variety of this species, in which the leaflets of the lower leaves are 
entire. 



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50 UNITED STATES AND MEXICAN BOUNDARV. 

Phaseolus AKGUSTissiMns, Gray, Fl. Wright. 2, p. 33. Dry ravinea on tlie Cibolo, a tributary 
of the Rio Grande, Coliahuila, July ; Bigeloio. 

Phaseolus, macbopoides, Gray, I. c. Hills at tlie Coppor Minea, August ; Bigdow. 

Phaseolxis AXKOPUiiPCEEDS (n.sp,:) caulibus volubilibus retrorsim pubescentibiis ; stipulisminutis 
subulatis ; foliolis lanceolatis basi dilatatia utrinque pubescentibus lateralibus ad basim aiiilobatis, 
terminatt trilobo; pedunculis folio multoties longioribus paucifloris ; calycibus subsesailibus, 
laeiniis inferioribus laiiceolato-subulatia, superioribua triangular i-Ianceolatis, alia corollie late 
ovatis (atropurpureia) Texillo dupio longioribua ; leguminibua defiexia lineari-falcatia 7 — 9- 
spermis. Eocka on the Rio Cibolo of the Eio Grande, and ravinea, Bufitillo ; Bigelow. Preaidio 
del Norte, July — Auguat ; Parry. Leaflets 1^ — 2^ inches long, tapering to a long narrow 
point ; the lateral ones with large acute lobe on the outer side at the baae ; the terminal leaf 
more or less dilated at the baae, and usually 3-lobed, but aometimea (eapecially in the lower 
leaves) only obacurely lobed. Peduncle 8 — 12 inches long, and still more elongated in fruit. 
Flowers 6 — 10, at first approximated toward the extremity of the peduncle, but afterwards 
distant. Poda about 3 inches long and 2 linea wide. Seeds oblong, compreased, about 2^ lines 
long, and "l| wide ; smooth, greyish, apeckled with dark purple. This seems to be quite distinct 
from any Phaseolua hitherto described. Mr, Schott found on the sea beach at Brazos Santiago, 
Tesaa, a plant allied to this, but much more downy, and the leaflets half aa large, ovate 
obtuse, with very short lobea. The specimens are not sufficiently complete for a more minute 
comparison. 

ViGNA VILL08A, Savi. ? DO. Prodr. I. 2,- p. 40. Thickets on the Eio Grande, between Einggold 
Barracks and Laredo ; Sckoft. If, as ia probable, this and V. glabra are not specifically distinct, 
it ought to be called V.'luteola, the genua Vigna having been founded on Dolichoa luteolua, 
Jacq. 

Erytheina corailoides, Moc. (& Sesss in DC. Prodr. 2, p. 413? Gray, PI. Thurl. p. 301. 
Bachuachi and Gaudaloupe canon, June (in flower) and Auguat (in fruit) ; Thwrber. Summit 
of mountains north of Imores ; Capt. E. K. Smith; and Sierra del Pajarito, in the same State ; 
Schctt. I have followed Dr. Gray in naming this plant, but it does not well accord with the 
description of De Candollc. The leavea are broader than long, and the petioles in our specimens 
are more or leas prickly. Indeed, it scarcely diflers from E, herhacea, of the aouthern States, 
for that species becomes shrubby in Florida, and the stem, as well, as the petioles, prickly. 

EHYNcnosiA Texaxa, T<yrr. c6 Gray, Fl. 1, p. 687- Western Texas ; also near the Copper 
Mines and Sonora, May — June. 

Rhyschosia Texana, var. angiistifolia, Gray, PI. Wright. 1, p. 44. Mountain ravines' 
between Van Horn's Wells and Muerte, July ; Parry, Bigelow. 

EnYiSCHOsiA MBNiSPERMOiDEA, DG. Prodr. 2, p. 384. Sandy places, low land, Texas, June ; 
Thnrber, Bigelow. 

Centros^ma Virginiana, Benth. ; Torr. & Gray, Fl. 1, p. 290. Var. foliolis minoribus angus~ 
tioribuaque. Brazos Santiago, May ; Schott. 

. Galactia MAB.GtNALis, Benth.; Torr. d Gray, Fl. I, p. 288. Western Texas, near the Eio 
Grande ; Parry. 

Galactia tbphrodeSj S. B. Kih, ; Gray, PI. Wright. 2, p. 34. Ravinea near Rock creek j 
Bigelow. Janoa, Chihuahua ; Thurher. 

Galactia cane-cens, Benth. ; Torr. (& Gray, Fl. 1, p. 288. Sandy places between Einggold 
Barracks and Laredo, Texas ; Schott. 



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BOTANY. 51 

, Galactia WRifiHTii, Gray, PL Wright. l,p. U. Sierra del Pajarito, July; ScJiott. 

CoLOGANiA PULCHELLA, R. B. Kth. ; Gray, I. c. p. 45, <& 2, p. 34. Kaviiios near the Copper 
Mines; rocky hills near Muerte, and mountains of Muerte, July—August; Bigeloio. 

CoLOG.iNiA LONGiifoUA, Gray, I c. 2, p. 35. Eavines near Camp Bache, western Texas, and 
at tlie Copper Mines ; Bigdow. A large leaved form. 

Daubestohia lohgipolia, do. Mem. Leg. d Prodr. 2, p. 267; Torr. <& Gray, Fl. p. 283. 
Banks of the Rio Grande from Laredo down to the coast ; Sckott. Eio Coleto, Texas ; Tlmrher. 
A large shrub, with showy racemes of hright yellow flowers. The seeds are used as a suhstituto 
for coffee, 

Dauebstonia ? Thurberi, Gray, PI. Thurl. p. 313. Hill-sides, Mahibi, Souora, June; 
Thurher, 

GLomDiuM ploridanum, DC. Prodr. 2, p. 266 ; Ton: d Gray, Fl. 1, p. 294. Southwestern 
Texas, September ; Tkurh&r. 

Sbsbania macrocakpa, Muhl; DC. I. c; Torr. rf; Gray, I. c. Shore of the lower Gila, near 
its confluence with the Colorado ; SchoU. Cocospera, Sonora ; Thurher. 

Petekia scoparia, Gray, PL Wright. 1, p. 50. Gravelly hills near Rock creek, aad between 
Van Horn's Mills and Eagle Springs, between the Pecos and the Kio Grande, July, Bigelow. 

PiCKERiNGiA MONTANA, NuU. in Torr. and Gray, Fl. ], p. 389.— (Tab. XIY.) Hills near 
Monterey, May; Parry. The fruit of this interesting shrub is still a desideratum. 

Tephhosia LmcnEiMEEi, Gray, PI Lindheira. 2, p. 172. Hills on the Lower Rio Grande, 
April ; Schott. 

Tei'Hrosia leucantha, //. B. K. ? Gray, PI. Wright. 2, p. 36. Santa Cruz and Mahibi, Sonora ; 
September (in fruit) ; Thurler. Sierra Verde, in the same State ; Schott. 

TBPHROSfA TENELLA, Gray, I. c. Santa Crua, September ; Thurher, and Sierra de la Union ; 
Sonora, July; Schott. 

Inpigoeera Lindheimeriana, Scheele in Linnaia, 21, p. 4(54; Gray, PI. Wright. 1, p. 45. 
Central and western Texas, August— September. 

iNDieoPEBA LEPTOSEPALA, N'^tt. in Torr. & Gray, Fl. 1, p. 298. Valley of the Pecos, &c.; 
September. 

PsoRALEA PLORiBirsDA, Nutt. I. 0-. p. 30. Gravelly hills, Rock creek, and at the Copper Mines ; 
also in Sonora, south of the boundary line, 

PsoRALBA ESOULENTA, Pursh, Fl. 2, p. 475, f. 22. Fields near the Presidio del Norte, August ; 
Parry. Luxuriant specimens, with the leaves all crisped, undulate on the margin. 

PsoRALEA ORBICULARIS, Dindl. Bot. Reg. t. 1971 ; Torr. d Gray, Fl 1, p. 304. Near San Lnis 
Obispo and other parte of California, April ; Parry. Peduncles often more than a foot long, 
and the petioles of nearly the same length. The spike is at first short and capitate, but in full 
flower is sometimes 6 inches long. 

PsORALBA MACROSTACUYA, DO. Prodr. 2, p. 220 ; Torr. d Gray, Fl. 1, p. 689. Banks of rivers, 
San Luis Rey, California^ October ; Parry. 

PsoRALEA PSYC0DE8, Dougl. in Hooh. Fl. Bor.-Am. \,p. 136. In moist places near Monterey; 
California, May; Parry. Our specimens accord exactly with Douglas' Californian plant, and 
therefore belong to the var. (3. Hooh. I. c. 

Eysesharutia amorphoides, H. B. K. Nov. Gm. & Sp. 6, p. 489, (. 592. Common in western 
Texas, along the Eio Grande, also in Cohahuila, Chihuahua, and Sonora, May— S( 



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52 UNITED STATES AND MEXICAN BOUNDARY. 

Dalea roRMOSAj Torr. in Ann. Lye. N. Y. 2, p. 178; & in Emory Eep. t. 1. QraTelly and 
rocky hills and prairies along tlie Eio Grande, from Frontera down to Eagle Pass, also in Coha- 
linila, April — July. A highly ornamental little Rhnib, hearing a profusion of bright rose- 
colored flowers. 

Dalea pogonathera, Gray, PI. Wright. 1, p. 48. Hills along the Eio G-rande and its tribu- 
taries in western Texas and the Mexican States, April — August. 

Dalba lasiathera, Gray, I. c. Plains near Howard's Springs, September ; Bigelow. Cen- 
tral Texas ; Thurher. 

Balba brachystacutxs, Gray, I. c. 2, p. 39. Plains, Leon Springs, September ; Bigdov;. 
Sonora ; Thurber. 

Dalea poLYflOKOlDls, Gray, I, c. Hills near the Copper Mines, New Mexico, October; Bigelow. 

Dalea piliformis. Gray, I. c. "With the last ; Bigelow. Also between Jauoa and Santa Maria 
river, Sonora, September ; ScIioU. 

Dalea l^vigata, Gray, I. c. With the last ; Bigelow, TJmrher. Dry rooty places, valley 
of the Santa Cruz, Sonora ; Captain E. K. Smith. 

Dalea albyflora, Gray, I. c. p. 38. Hills near the Copper Mines, August — October ; Bigehio. 
San Pedro, Sonora ; Thurber. 

Dalea alopecuroidbs, Willd.; Gray, PI. Fendl, p. 31. Santa Crua, Sonora, May — September; 
Thurber, Caplam E. K. Smith. 

Dalea Wislizeni, Gray, Fl. Fendl. p. 32, (fe PI. Wngkt. 2, p. 38. Santa Cruz, Sonora, 
September ; Thurber. 

Dalea aurea, Jflult. Gen. 2, p. 101. Dry rocky places in the valley of the Limpio, July; 
Bigelow. Arroyo los Mores, on the Rio Grande, August ; Schott. 

Dalea nana, Torr. in PI. Fendl. p. 31 ; var. elatior, &c. Gray, PI. Wright. I, p. 46. Hills 
along the Eio Grande and its tributaries from New Mexico to Laredo, June — August. 

Dalea Wbigiitii, Gray, PI. Wright. 1, p. 49, Hill sides Frontera, and between the San Pedro 
and Pecos, May — October. Canon of the Guadaloupe river, Sonora, April ; Oapt. E. K. Smith. 

Dalea JAxMESII, T<yrr. & Gray, Fl. 1, p. 308. Gravelly bills, Eock Creek, and plains along 
the Limpio, May — July ; Bigelow. Mule Springs, New Mexico ; Thurber. 

Dalea lacjinosiachys. Gray, PI. Wright. 1, p. 46. With the last ; Parry, Bigelow. 

Dalea mollis, Benth. PI. Hartw. p. 306. Hills and rocky places along the Rio Grande, Texas, 
westward to the Colorado desert, California ; February — July. 

Dauia lanata, Spreng. Syst. 3, p. 327. Sandy ravines and hill sides on the Eio Grande, 
Texas ; also in Cohahuila and Chihuahua, September. 

Dalea argyr^a, Gray, PI. Wright. 1, p. 47. Eocky hills between the Nueces and the Eio 
Grande, September. 

Dalea Greggii, Gray, PI. Thurb. p. 315. Agua Prieta, March ; Parry. Oerro Gordo, in 
Durango; Thurber. Sierra del Pajarito, Sonora, July; Schott. Leaflets sometimes only 3. 
Flowers bright rose color. 

Dalea Emoryi, Gray, I. c; Torr. in Padf. B. Boad Expl. 6, p. 360, t. 11. Valley of the 
Gila, May— July; Schott, Thurber. 

Dalea scopaeia, Gray, PI. Fendl. p. 32, d: PI. Wright. 1, p. 47. Sandy hills near Elceario, 
June ; Bigelow. Laguna de los Patos, Chihuahua ; Thurber. 



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BOTANY. 53 

Dalea frotescbks, Gray, PI. Lindh. 2, p. 175. Hills and rocky places along the Eio Grrande 
and its tributaries, August — September. 

Dalba spisosa, Gray, PI. Thurb. p. 315 ; Torr. Sot. Parke, in Pacif. E. Boad Expl. 7, p. 9, 
t. 3, On the lower Rio Gila; Tkurber. Dry beds of rivers in the Californian desert; Schott. 
The leaves of young shoots and seedlings are oh ovate -oblong, toothed and dotted with glands. 

Dalba ScHomi (n. sp.): fruticosa ; ramis flexuosis glaberrimis, ramulis in spinas subpun- 
gentes abuentibus ; foliis simplicissimus sparsis anguste linearibus ; pedunculia 2-3-flori8 ; 
calycis dentibus late ovatis tubo glabro eglanduloso duplo brevioribus ; corolla violacea. Dilu- 
vial banks of the Colorado, February; Schott, Branches zigzag, smooth, yellow. Leaves 8-10 
lines long, scarcely a line wide, hoary- pubescent above, green, and marked with row of impressed 
dots on each side underneath. JFlowers produced at the extremity of short branches, usually two 
together, on short pedicels ; the bracts resembling the leaves, only smaller. Calyx without 
glands, somewhat turbinate, smooth, the broad teeth pubescent on the margin. Corolla deep 
violet. Pods not seen. 

Petalostbmon exile, Gray, PI. Wright. 2, p. 51. Hills and rocky places at the Copper Mines, 
New Mexico, September ; Bigeloto. Santa Cruz, Sonora ; Thurher. 

Petalostemon candidum, Michx. Fl. 2, p. 49, (, 37, /. 1. Near the Copper Mines, and low 
places between Van Horn's Wells and Muerte, July ; Bigehw. Rio de Sta. Cruz and Prodrero, 
Sonora, June ; Schott. Our plant resembles Fendler'a specimens named P. gracile by Dr. 
Gray, but it is erect. 

Petalostemon EMAEGraATUM, Torr. dr. Gray, Fl. 1, p. 311, Near Ei'nggold Barracks ; Schott. 
We have never before received specimens of this plant since it was sent to us from Drummond's 
Texan collection. 

EOEiNiA Neo-Mexicara, Gray, PI. Thurb. p. 315. Along the Mimbres, New Mexico; Thurher, 
and on Beu Moore, near the Copper Mines ; Bigdow, 

Amorpha laevisata, Nutt. var. pubesceks. Gray, PI. Wright. 1, p. 49. Hills at the Copper 
Mines, and on the Rio Grande below the mouth of Escondido creek, March ; Bigelow, Schott. 
Hardly distinct frona the next. 

Amobpiia pruticosa, Linn.; Torr. & Gray, Fl. 1, p. 305. A. Californica, Nutt. I. c. Moun- 
tains east of San Diego, California ; Parry. Mahibi, Sonora, June ; Thurher. I can lind no 
reliable characters for distinguishing the two species here united. Mr. Nuttall's plant was 
described from specimens in which the flowers were scarcely unfolded, and the fruit of which 
was not collected, 

GltcyrrhizA lepidota, Nutt. Gen. 2, p. 106 ; Bot. Mag. t. 2150 ; Gray, PI. Wright. 1, p. 50. 
G. glutinosa, Nutt. in Torr. <& Gray, Fl. 1, p. 298. Valley of the Eio Grande below San 
Elceario, June ; Thurher. Ojo de Vaca, Chihuahua ; Thurher. San Felipe, California; Parry. 

Mbdicaqo sattva, Linn.; Torr. & Gray, Fl. 1, p. 321, Banks of the acetiuia, near El Paso, 
May ; Bigelow. This is no doubt an introduced plant. It seems to be naturalized in many 
parts of the Mexican States. 

Medicago DBNTicuLATA, WUld.; Torr. (£ Gray, I. c. Naturalized in western Texas, New 
Mexico and the Mexican States west of the Rio Grande ; also throughout California, wherever 
the Spanish missions w 



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54 UNITED STATES AND MEXICAN BOUNDAlfY. 

Melilotus PARViFLOaA, Dvsf. ; Torr. <& Gray, I. c. M. occidentalia, NuU. I. c. Western 
Texas, Chihuahua, Sonora and California, April — May. Introduced from Europe. 

Trieolium pimbriatdm, Lindl. Bot. Beg. t. 1070; Torr. <& Gray, Fl. 1, ■p. 317. Near San 
Diego, California, May ; Parry. Napa and San Isabel in the same State ; Thurber. All our 
specimens of this plant are clothed with a mimito glandular pubescence. The leaflets are 
lanceolate or oblong-lanceolate, and conspicuously fringed with narrow epinulose aerratures. 
Teeth of the calyx always entire, and broadly lanceolate at the base. Legumes 2-seeded, The 
Indians of California collect the seeds for food. 

Tripolium ueterodon, j9. Torr. <& Gray, Fl. l,p. 318, Monterey, California, May; Parry, 
Differs from the preceding in being glabrous, with oblong or obovate leaflets ; the stipules much 
less cut ; the calyx-teeth subulate from a narrow base ; the two upper ones 2 — S-cleft, and in 
the legumes 4 — 5 -seeded. 

Tripolium spmuLosuM, ^. Torr. dt Gray, I. c. Near Monterey, California, May ; Parry . 
Near the last, but distinguished by the entire teeth of the calyx, more laciniate stipules and 2- 
fieeded legumes. From T. fimbriatum it diifers in being glabrous, and in the much longer and 
narrower calyx-teeth. 

Teifolium Macrjei, Ebok. &Arn. Bot. Misc. 3,^, 179. T. albo-purpureum, Torr. &Gray, Fl. 
\,p. 319. Santa Barbara, California, April ; Parry. 

Tripolium tridestatum, Lindi. Bot. Beg. sub t. 1070. T. involucratam, Torr. & Gray, I. c. 
non WiUd. Santa Barbara, California ; Parry. 

Tripolium imvolucratum, Willd. Sp. 3, p. 1372 ; Gray, PI. Wright. 2, p. 41. Hills at the 
Copper Mines and along the Mimbres, New Mexico, June ; Bigelmo. Mabibi, Sonora ; Thurber _ 

Tripolium Bejaribnse, Moricand, PI. Nouv. Amer. p. 2, t. 2. Western Texas, April ; Wright. 

Tripolium fuoatum, Lindl. Bot. Beg. t. 1S83 ; Torr. & Gray, I. c. T. physopetalum, Fisch. 
& Mey. Ind. Sem. St. Petersb. 1837, p. 18. Santa Barbara, and on the beach San Juan 
Capristano, California, March — May ; Parry. San Isabel ; TJmrber. As tout species, easily 
distinguished by its very large head, and broadly lanceolate entire segments of the involucre. 

Tripolium ampleoiens, Torr. <£ Gray, I. c. 1, p. 319 ; Hook, tfe Arn. Bot. Beech, p. 330, t. 78. 
San Fernando and San Luis Obispo, California ; Parry. 

Trifolium varie&atum, Nutt. in Torr. & Gray, Fl. 1, p. 317, Sonora, June ; Thurber. 

Tripolium microcephalum, Pursh, Fl. 2, p. 478 ; Torr. & Gray, I. o. San Diego, California, 
May ; Thurber. 

HosACKiA OBLONOiFOLiA, Benth. PI. HaHw. p. 305. Mountains east of San Diego, California, 
June ; Parry. Resembles H. bicolor, but differs in being pubescent, and in the narrowly 
oblong acute leaflets, as well as in other characters. The legume is straight, abotit an inch 
and a quarter long, and scarcely two lines wide. I have never seen H. bicolor with bracts, but 
in this species there is always a nnifoliate bract to each head of flowers. 

HosACKiA &RACILIS, Bctttk. in Linn. Travs. 17, p. 365 ; Tm-r. & Gray, Fl. l,p. 323. (Tab. 
SV.) Monterey, California, May. A rare species which we have received only from the 
vicinity of Monterey. It has much the appearance of a depauperate state of H. bicolor. The 
petiolate trifoliate bract is always present. 

HosACKiA STRiGOSA, NuU. in Torr. & Gray, I. c. II. rubella, Nutt. I. c. Near Santa Barbara, 
California, March ; Parry. Annual. Stem branching from the base ; the branches 3—4 



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inches long. Flowers nearly one-third of an inch long. H. nudiflora, Nutt. seems hardly 
distinct from this species. In H. rubella we find on the same specimens some peduncles with 
unifoliolate bracts, and others in which the bracts are reduced to minute gland-liite scales. 

HoSACKiA PUBERULA, Bentlh. PI. Hartw. p. 305; Gray, PI. Wright. 1, p. 50; Torr. Bot. 
Parke in Pacifio E. Boad Expl. 7, p. 10, t. 4. Western Texas, New Mexico, Chihuahua, 
Sonora and California. 

H. PCBBRULA, var. NANA, etc., Gray, I. c. Organ mountains, New Mexico, Bigelow. Ojo de 
Vaca, Cliihuahua ; Thurher. — H. Wrightii, Gray seems to pass into this species. A variety 
with obovate leaflets was found by Schott, in the valley of the Gila, and by Captain E. K. 
Smith, in Sonora. 

HosACKiA PuRSHlAHA, Benth.; Torr. & Gray, I. c. Between Tucson and the Eio Gila, Sonora, 
March — (September ; Parry, Thurher. Monterey, California ; Parry, Varies with the upper, 
and sometimes all the leaves unifoliolate, when it is the H. unifoliolata, Hook. Fl. Bor.-Am. 
I, p. 135. This synonym was inadvertently overlooked in the Flora of North America, as it 
was also by Hooker in noticing the same form in PI. Geyer. — (See Lond. Jour. Bot. 7. p. 210,) 

HosACKiA MARiTiMA, Ntitt. in Tovr. & Gray, Fl. 1, p. 326. San Isabel, California, May ; 
Thurber. 

HosACKiA suEPiNNATA, ToTT. <& Gray, I. c. ; Benth. PI. Hartw. p. 306, San Isabel, California, 
May ; Thurher. H. Wrangeliana should probably he united to this species. 

HosACKiA BEACHYCAKPA, Benth. I. c. Sonora ; Thurher. The mature pod is nearly twice asloni^ 
as the calyx, but is always much shorter than in H. subpinnata. 

HosACKiA AROOPHTLLA, Gray, PL Thurh. p. 316. On rocks, Son Isabel, California, May; 
Thurber, 

HosACKTA TOMENTOSA, Book. (& Am. Bot. Beeckey, p. 137 ; Torr. & Gray, I. c. Monterey. 
California ; Parry. 

HosACKiA CYTisoiDES, Benth. I. c. ; Torr. (& Gray, I.e. jS. Syrmatiuni glabrum, Vogelf 
Monterey, California, May ; Parry. Leaflets mostly 3. Flowers reddish. 

HoSACKiA scoPARiA, Nutt. In Torr. dc Gray, I. c. Ravines near San Diego, and in other parts 
of California, May ; Parry, Ihurher. 

HosACKiA JUKCEA, Benth. I. c. In the Colorado desert ; Schott. Too near the last species. 

Astragalus Cobbensis, Gray, PI. Wright. 2, p. 43, {adnot.) Copper Mines, New Mexico, 
April, and Ben Moore, Cohahuila, June (fruit) ; Bigelow. 

Astragalus Bigelovii, Gray, I. c. p. 42. Between the Eio San Pedro and the Rio Grande 
western Texas ; also at the base of the Organ mountains and near the Copper Mines, New 
Mexico ; west to the Santa Cruz valley, Sonora; March — May. 

Astragalus didtmocarpus, Book, d Am. Bot. Beecliey, p. 334, t. 81 ; Torr. & Gray, I. v. 
High beach near San Juan Capristano, and at Santa Barbara, California, March ; Parry. The 
leaflets in most of our specimens are narrowly cuneate-oblong, and notched at the summit. 

Astragalus Nuttalltanus, DC; Torr. d Gray, P"l. 1, p. 334 ; Gray, I. c. p. 52. Valleva 
of the Bio Grande and its tributaries in western Texas, New Mexico, Cohahuila and Chihuahua ■ 
also in Sonora; March— June. Variable in size, foliage, and other characters. 

Astragalus humisthatus. Gray, PL Wright. 2, p. 43. Hills at the Copper Mines, June— 
July ; Bigelow, Thurber. Leaflets more obtuse than in Wright's specimens. 



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66 UNITED STATES AND MEXICAN BOUNDARY. 

AsTRAOAtus GLARBOSUS, Doiigl. in Book. Fl. Bor. — Am. I, p. 152? Near the Copper Mines, 
May— June ; Bigelow. Gfu^idaloupe Pass, Sonora. 

Astragalus Hartwemi, Benth. PI. Harlw. p. 10. El Podrero, near the 110° of longitude, 
Sonora ; Schott. 

AsiBAGALUS CYABEUS, Gray, Fl. Fendl. p. 34. Dona Ana, New Mexico, April ; Thurber, 

Astragalus vacarum, Gray, Fl. Wright. 2, p. 43. Ojo de Vaca^ Chihuahua ; Thurber. 

Astragalus (Puaca) tephrodbs, Gray, Fl. Wright. 2, p. 45. Gravelly plains near the hase 
of the Organ mountains and on the Mimhres, New Mexico, April — May ; Bigelow, Thurber. 

Astragalus (Puaca) Pehdleri, Gray, I. c. p. 44. Hills at the Copper Mines, Oetoherj (in 
fruit); Bigelow. 

Astragalus (Phaca) Sonor^b, Gray I, c. Tuhac, Sonora, March ; Farry. 

Astragalus (Phaca) Thurbbri, Gray, Fl. Thurb. p. 312. Pronteras, Sonora, June ; 2'hurber 

Astragalus (Phaca) leucopsis, Torr. & Gray, Fl. \,p. 694. Phaca canescens, Nutt. in Torr. 
& Gray, I. c. p. 344, non Book. <& Am. (Tab. XVI.) San Diego, California ; Farry, Schott. 
The pods are about an inch and a c[uarter long, excluding the stipe, which is 4 lines long. 

AsiRAGALua (Phaca) crotalarijEj Benth. PI. Martw. p. 301. (Tab. XVII.) Mountains east 
of San Diego, California, June, (with flowers and ripe pods ;) Farry. A stout species, 
commonly 4~-6 feet high. 

Astragalus (Puaca) triplorus, Gray, Fl. Wright. 2, p. 45. Phaca triflora, BQ. Sandy plains 
and mountains on the upper Eio Grande, in New Mexico and western Texas ; also in Cohahuila ; 
April. 

Oxythopis Lamberti, Fursh, var. Gray, Fl. Wright. l,p. 53. Hills near the Copper Mines, 
and Ojo Caliente ; Bigelow. 

Cujetocalyx Wislizeni, Gray, Fl. Wright. 1, p. 51, d 2, p. 45. (Tab. XVIII, fig. 5 — I'.) 
Mount Carmel, and mountains of Santa Rosa, Cohahuila, October — November, (in fruit ;) Farry, 
Bigelow. 

ChjETOCALTX ScnOTin (n. sp.:) prostratus fere glaher ; foliolis 5 ovatis acutis valde mucronatis 
eoncoloribus ; dentibus calycis lineari-subulatis nudis tuho sub duplo-longioribus ; carina alse 
subffiCLuantibus ; staminibua superne Eoqualiter diadelphis. (Tar. XVIII.) Sierra Verde, Aroyo 
de los Samotas, Sonora, August; Schott. Stem branching from a somewhat woody base, 
slender, 2 — 3 feet long, twining towards the extremity. Leaflets 6 — 8 lines long, thin, those 
of the lowest leaves obtuse, the others acute and pointed with a conspicuous mucro. Flowers 
about six in axillary fascicles or short racemes. Pedicels rather shorter than the flowers. 
Calyx broadly campanulate, entirely destitute of glands. Corolla yellow. Vexillum ovate, 
oblong, emarginate, slightly pubescent. Wings and keel-petals oblong, acute. Stamens mona- 
delphous below, diadelphous above, five on each side of the pistil. Ovary, mostly three-ovuled. 
Mature pod not known, but the yonng ones are 2 — 3-jointed ; the terminal joint foliaccous and 
dilated. Differs from C. Wislizeni in the narrow acute leaves, and the long teeth of the calyx. 

ZoRBiA TETRAPiiTLLA, Michx. Fl. 2, p. 76; Torr. & Gray, Fl. 1, p. 354. Laredo and Ring- 
gold Barracks, June ; Schott. 

Desmoddjm: Geahami, Gray, PI. Wright. 2, p. 48. Eocky places, on mountains of the Limpio 
river, and hills at the Copper Mines, July — August ; Bigelow. 

Desmodium aknuum, Gray, I. c. Santa Cruz, Sonora, September ; Thurber. 



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BOTANY. 57 

Desmodium EXfGUUM, Gray, I. c. With the last; TJiurher. 

Desiiodium PAxtcuLATDM, DC. ; Torr. & Gray, Fl. 1, p. 363. Devil's River valley, western 
Texas, (flowers and fruit), September ; Bigelow. 

Desmodium crsERASCBNS, Gray, I. c. p. 48. Sonora, ia various places, June ; Thurher. 

Desmodium WRionTii, Gray, PI. Lindh. 2, p. 177. Dry mountain ravines, on the Limpio ; 
July, (I'mit;) Bigelow. 

Desmodium Neo-Mexicinum, Gratj, Fl. Wrighi. 1, p. 53. Copper Mines, New Mexico, and 
Santa Cruz, Sonora, September ; Ihurber. A variety with broader and more strongly reticu- 
lated leaves than usual was found by Schott on the mountains of San Estaban, in Sonora. 

Lespedez* violacea, Pers. var. sessiliplora, Torr. d Gray, Fl. 1, p. SCT. Central Texas; 
Sckolt. 

CROTALARrA LUPULINA, DC. Prodr. 2, p. 133. Brazos Santiago, and Sonora, May; SJio'J. 
Chihuahua and Sonora ; Thurher. Eeraavkable for its long spur-like projecting keel. 

Ckotalaria bagittalis, Linn. ; Torr. <£ Gray, Ft. 1, p. 370. Sonora ; T/uirber. 

LuPiNus DENSIFLORUS, Bentk. in Hart. Trans, (n. ser.) I, p. 409; Torr. Pacif. Railroad Expl. 
4, p. 81. L. Menziesii; Jgardh, Syn. Lup. p. 2. Monterey, California, May; Parry. San 
Diego ; Tliurher. 

LuPiSus HiiiSUTissiMUS, Bentli. I. 0. San Pasqual, California, May; Thurher. 

Lur-isus SUBCARNOSUS, Booh. Bot. Mag. t. 3467; Gray, PI. Wright. 1, p. 54. L. Texcnsis; 
Hook. "Western Texas, May — June ; Thurher. 

Lui'iNUs TituxcATUS, Nutt. ill Torr. & Gray, Fl. I, -p. 373. San Diego, California, Mirch— 
May ; Parry, Thurher. 

Lcpixus SPARBIFLOBUS, Benfh. PI. Rarho. p. 303. Near San Diego, California, May; Thurher. 

Lui'iNUS BicOLoR, Liadl. Bot. Beg. t. 1109; Torr. & Gray, I. c. San Pasqual, Caliibrnia, 
May ; Thurher. 

LupiNus MicitANTHUS, Dougl. in Bot. Reg. t. 1251. Napa Mountains, California, March; 
Jhurher. 

LupiNUS PUSiLLCS, Pursh, Fl. %,p. 468. Gravelly plains near the Organ Mountains, and hills 
at the Copper Mines, New Mexico ; also near Frontera, March— April, Tucson, Sonora, and 
valley of the Santa Cruz, Sonora; Parry, Oapt. E. E. Smilh, 

LupiNUS HIVCLABI3, Livdl. Bot. Beg. t 1595 ; Torr. & Gray, Fl. 1, p. 376. Sao Diego, Cili- 
foruia ; Parry. 

LupiNUS CYTisoiDiS, Agardh, Lup. p. 18. San Isabel, California, May ; Thurlcr, 

LupiKUS ABPiNtg, Agardh, I. a. p. 20. Monterey, California ; Parry. 

LupiNUs Mexh^amus, Lagasca; Gray, PI. Wright. 2. p. 49. On the mountain called Ben 
Moore, near the Copper Mines, and at Crucis, New Mexico, April — May ; Bigdow. 

LupiMUS ORHATUS, Dougl. in Bot. Reg. i. 1216. Napa county, California, March ; Thurher. 

LupiNUS DouGLAsrr, Jgardh, Lup. p. 34. South of San Louis Obispo, and near Monterey, Cali- 
fornia ; Parry. 

LupiKUS AiJitFROKS, Bentk.; Agardh, I. c. p. 33. Monterey ; Parry ; and near San Pasqual, 
California, May ; Thurher. 

Lupisus ARB'-EEUS, Sims in Bot. Mag. t. 682 ; Agardh, I. c. p. 25 ; Benlh. PL TIariw. p. 303. 
Near San Diego and Monterey, California, May ; Parry. A bushy shrub, with a stem which 



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58 UNITED STATKS AND MEXICAN EOUNDAEr. 

is sometimes 1^ inch in diameter. It is a rare species in California, but is not uncommon in 
the gardens of Europe, into which it is generally thought to have been introduced from South 
America ; but we strongly suspect that the seeds were bvought by Menzies to England from 
California. 

LUPIKUS Ln'rOBALls, Dougl. ; Agardh, I, c. p. 36. Monterey, California, May ; Parry. 

SoPHOEA siiBlOBA, Nult. Gen. 1, p. 280 ; Oray, PI. Wright. \, p. 54. Low moist places along 
the Rio G-TSnde and its tributaries, from New Mexico to San Elceario ; also in Coahuila ; May — 
June. 

SoPHORA SPECICSA, Benth. ; Gray, PI. Wright. 1, jp. 54. Rocky valley of the Pecos ; Septem- 
ber, (in fruit ;) Bigelow. Fort Inge, Texas ; Parry. Rinconada Pass, Neuvo Leon ; Thurher. 

SoPHOltA 'fOMiMTOSA, Linn.; Torr. cfi Gray, Fl. 1, p. 389. Brazos, Santiago, Texas; May; 
Schott. 

Thbrmopsts fabacba, DG. Prodr. 2, p. 99. T. montana, Nult. in Torr. & Gray, Fl. \,p. 388. 
Napa county, California, March ; TJnirber. Near the surarait of the mountains east of San 
Diego, California, June ; Parry. 

Olneya tesota, Gray, PI. Thurh. p. 328; Torr. in Pad/. Railroad Expl. 7, p. 10, t. 5. 
Ravines in the table lands on the lower Grila, often in company with Cercidium floridnm ; Parry, 
Thurher. Hills near Fort Yuma, California, January ; Schott. 

Cercis occidestalis, Torr, in Gray, PI. Limdheim. 2, p. 1'?'7. Valley of the Devil's river, 
western Texas ; Bigelow. Also i a California. Mr. Blate informs me that the camels, lately 
imported into the United States, are very fond of the leaves of this plant. 

HoBEMANSEGGlA Jamish, TorT. d Gray, Fl. 1, p. 54; Gray, PI. Wright. 2, p. 49. Sandy 
places near Fort Fillmore, and other places, in New Mexico, April — September ; Bigelow. 

HoFi'MANSEoeiA OAUDATA, Gray, PI. Lindh. 2, p. 179; PI. Wright. 1, p. 54. On the lower 
Rio Grande, April ; Schott. In our specimens there are from 2 — 4 pinnse. The leaflets vary 
from 4 to 7 pairs in the lateral pinnae, and from 9^1 5 (rarely only 7) in the tormina! one. Some- 
times they ai'e scarcely a line in length. 

HoEFMAKSEGGiA MICEOPHYLLA (n. sp.:) puberula ; ramis elongatis virgatis ; pinnis unijugis 
cum imparl, lateralibus 10 — 12-foliolati8, terminali 14 — 20-foliolata, foliolis minutis oblongis 
e glandule si s ; bracteis stipnlisque caducis ; racemo laxifloro elougato; legumine subfalcato 
acuto glandulis subs ess ili bus asperate. Sandy desert of the Colorado, Caliibrnia ; Schott. Plant 
apparently two feet or more in height. Stem aud branches green, minutely velvetty, pubescent. 
Lateral pinnae 3 — 4 lines long, the terminal one nearly twice as long. Leaflets scarcely a line 
in length, pubescent. Calyx softly pubescent. Corolla yellow ; the claws of all, and the back 
of the vesilium, somewhat glandular. Ovary thickly covered with pale diKciform glands. Pods 
aessile, about | of an inch long and nearly 3 lines wide, nearly straight on the upper suture, 
4 — 6-Eeeded. 

HoFFMANSJ^GGlA OXYCARPA, Gray, PI. Wright. 1, p. 55. Viillien tind hilln of the San Pedro 
river, Texas, May ; Btgdow. 

HoEFMANSEGorA STEiCTA, Benth. in Gray, PI. Wright. 1, p. 5C. Sterile soils along the Rio 
Grande, from El Paso to Eagle Pass, Texas ; also in New Mexico, April — July. 

H. STEICTA |3. DBMIS.SA, Gray, I. c. San Elceario ; Parry. On the Pecos; Schott. 

HoFFMAHSEGGiA MELAHOSTiCTA, Gray, I. c. p. 54, (udnot.) Pomaria melanosticta, Schauer. On 
the Rio Grande below the cai\on of San Carlos, October, (in flower and fruit ;) Parry. Rio- 
(jonada, and Monterey, Neuvo Leon ; Dr. Edwards. Our plsut differs somewhat from the 



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BOTANY. 59 

description of Rchauer in Linnfea. There are only 2 or 3 pivirs nf JuaflotR, an'! tim pod is IJ -4- 
seeded. The vRsiUum, also, ia destitute of glands and data, 

CASPAliiA, Ji. spJ Eocky hills near Santa Eoaa, Chihuahua; Parr//. An erect shrub, 2-3 
feet high. Branches slender, flexnous, smooth. Leaflets distinct to the base, aemiovate, very 
obtuse. 3-nerved, very smooth. Pods (old and imperfect) about 2 inches long and one-third 
of an inch wide 

Oercidium Tbxakum, Gray, PL Wright. I, p. 58. Common on the Rio Grande from K! Paso 
to Eagle Pass, forming dense thickets in many places. 

Oeecidium floeidum, Benth. in Gray, I. o. (adnot.) ; Torr. in I'adf. it. Road ExpL 6, jj. 360, i. 
3. On the Lower Gila and Colorado rivers ; Emory, Schoit. This ia the Palo Verde of thf 
Mexicans, and the Green-bark Acacia of American travellers. 

Cassia ptjmilio. Gray, PI. Lindh. 2, p. ISO, & PI. WrigM. \ , jp. 59. h.lm Creek valley, near 
Eagle Paas, and at the mouth of the Pecos ; Schoit, Bigelow. 

Cassia E(eiieriana, Schede in Linnasa, 21, p. 457; Gray, i'l. Lindh. L c. Arroyo Zoquete 
and gravelly hills near Rock creek; July — September. 

Cassia bauhinioides, Gray, PI. Lindh. L c, d PI. Wright. 1, f. 59. Sandy plains and rocky 
situations, Leon springs and along the Bio Grande from El Paso down to Eaglo Pass ; also in 
Chihuahua, Durango, and Sonora, April-^August. Leaflets but a single pair in all our apeci- 
mens. Near Presidio San Vincente Dr. Parry found a variety with the leaflets broadly ovate. 
The same form is in Mr. Wright's collection. 

Cassia Lindheimbriana, Scheele, I. c; Gray, L c. Dry ravines near the Flounce mountains. 
Between the San Pedro and the Pecos ; also along the Eio Grande, June, August. Arrovo del 
Pozo Verde ; SclioU. 

Cassia Wislizeni, Gray, PI. Wright. 1, p. 60, d 2, p. 50. Hills and rocky placofi. Canon of 
Bossecillos, on the Eio Grande ; August. Parry, Bigelow. San Bernardino, Sonora ; June. 
Thurber. Leaflets sometimes 4 pairs, larger than in Wright's specimens. A neat and showv 
plant, well deserving of cultivation. 

Cassia Wkightii, Gray, PI. Wright. 2, p. 5U. On the Eio Mimbres, New Mexico ; June, 
{flowers and fruit;) Bigeloio. Sierra de los Tanos, Sonora ; Sakott. 

Cassia nictitans, Linn.; Torr d Gray, Fl. 1, p. 396. Comanche springs and Ijoon f^jirings ; 
Bigeloiv. Differs from the eastern plant in its narrower and more numerous seeded pods, and 
in the stjpitate glands of the.petioles ; but it does not appear to be a distinct species. 

Cassia Cham-eceista, Linn. ; Tor}-. & Gray, Fl. i, p. 3%. Sandy places between Eloggold 
barracks and Laredo ; June. Scho/t. 

Cassia ciiam^oeistoides, " C'oUad. Man. Cass. p. VA4:." C, cnierea, Cham, tfc SchlecU. "With 
the last ; Schott. 

Cassia obthsifolia, Linn.; Torr. d: Gray, Fl. \, p. 394. Isiand of the Ijoat Rock, in the 
Lower Kio Grande ; Schott. 

Paekinsonia aculbata, Linn.; DO. Prod,r. 2, p. 486. Alluvions and prairies of the Lower 
Eio Grande, and hills of the Colorado, near Fort Yuma, California; Schott. Fort Duncan, 
Texas ; Dr Edirards. Between Eeynosa and Matamoraa, Mexico ; Br. Gregg, An ornamental 
prickly shrub, now cultivated or naturalized in most of the warmer parts of the world, but pro- 
bably, as Alph. Do CandoUe thinks, of American origin. Accordins:; to Mr. Schott it is valued 
by the Mexican Indians as a febrifuge and sudorifle, and also fis a remedy in epilepsy. 

Paekinsonia miceophylla, Torr. in Pad/. It. Road Expl. 4, p. 82 ; glabriuscula ramosisslma ; 



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60 UNITED STATES AND MEXICAN BOUNDARY. 

ramulia (eaepe?) in spinas abuentibus ; foleis geminis vel teenis pinnatis, petiolo caimnuni 
exalafo supra canaliculato, foliolis 4 — T-ji^gi^ minimis (1 lin. long.) suborbiculatis late ovali- 
busve obtusis Fubcoriaceis ; staminibus petalis longioribiis. On the Colorado, near Fort Yuma; 
Schoif. This is an interesting addition to our Flora, being an undoubted native Parkinsonia, 
entirely distinct from P. aculeata, and much more nearly related to P. Africana, Soud. (in Lin- 
n(Ea, 23, p. 38.) We have seen no specimens showing tiie inflorescence but only a few loose 
flowers from the collections of Mr. Schott. From the fructiferous spechoens it would appear 
that the racemes are fewer-flowered and the pedicels shorter than in P. aculeata. The flowers, 
too, are smaller, the stamens much more exserted, and the petals (except the vexillum) are 
ovate, not roundish, as in that species. The pods are nearly the same in both. These varv 
from 2 to several-seeded, and are constricted between the seeds with a very long acuraination. 

C^5ALPisiA PiiLCHBiiBiMA, Sivariz ; Torr. (& Gray, Fl. 1, p. 3^17. Ures, Sonora, October ; 
Thm her, 

ALG.AEOBrA GLAND0LOSA, Torr. & Gray, I. c. p. 399 ; Gray, Fl. Wright. 1, p. 60. Sandy soils 
along the Eio Grande and its tributaries and in the Mexican States. Common on the bottom 
lauds of the Grila. This is the celebrated mesquite, so often noticed in the reports of western 
exploration. Dr. Gray (I. c.) suspects that it may be united (together with P; diilcis and P. 
Siliquastruin) to P. juliflora. It atfords a gum nearly equal to gum arabic, of which it stated 
that large quantities have lately btcn sent to Sao Kraneisco from Mexico. 

Sthomejcakpa PCBESCEKS, Gray, Fl. Wright, p. 60; Torr. Fadf. li. Uoad Expl. 6, p. SfiO, i. 4. 
Valley of the Rio Grande from New Mexico, 20 miles below San Elceario ; Blgdcio. Bottom 
lands of the Rio Gila and B. Colorado. The Screio-lean or Screiv-me&quite of American travel- 
lers and Tornillo of the Sonorians. 

SidOMBOCAEPA ciNEGASCENS, Gray, I. c. p. 61, adnot. Boggy places, Fort Mcintosh, and other 
places on the Lower Rio Grande, May, November ; Schott. The thorns are variable in length, 
being sometimes longer, sometimes much shorter than the leaves. Pods like those ofS, pubes- 
cens, except that they arc a little thicker. 

Nept(is:a lutsa, Benth. in Hook. Torr. Bot. 4, t. 356. Painted Caves, and near Eagle Pass, 
western Texas, June ; Bigdoto, Schott. In our specimens the fruit is sessile, while it is stipi- 
tate in the Florida plant. 

Desmantuus vblutisus, Scheele in Linncea, 21, p. 456 ; Gray, PI. Lindh. 2, p. 183. Hills at 
the Copper Mines, August; Biydow. Common near Eagle Pass ; Schott. 

Dermanidus Jamesii, Torr. d Gray, Fl. l,p. 402 ; Gray, Fl. Wright. 2, p. 63. Gravelly hills 
along Hock Creek ; and rocky places at the Copper Mines. July, (in flower,} August, (in fruit) ; 
Bigdow, Parry. 

Mimosa PRAtiRANS, Gray, Fl. Lindh. 2, p. 182 ; (& PI. Wright. 1, p. 61. Head of the Eio San 
Pedro; Bigelcw. Eagle Pass, April — June; Schott. 

Mlmosa BoiiBALis, Gray, PI. Fendl. p. 39, & PI. Wright. I. c. Plains near Live Oak Creek, 
September, (in fruit); Bigelow. 

Mimosa Lindheimeri, Gray, PI. Lindh. 2, p. 181. Eocky and gravelly hills and ravines, 
July ; Bigeloio. 

Mimosa DrsooARPA, Benth. in Gray, Fl. Wright, 1, p 62. On the Cibolo of the Eio Grande 
and Rock Creek ; also hills at the Copper Mines, July — August ; Bigeloio. 

Mimosa malacopiiylla, Gray, PL Lindh. 2, p. 182, adnot., (£ Fl. Wright, 1, p. 163. Eocky 



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BOTANY. 61 

hills near Santa Rosa, Chihuahua ; Bigelotv. Sometimes there are one or two short jirickles or 
teeth on the margin of the pods. 

M. MALAC0PI1YLI.A Tar. GLABEA, Gray. La Blanca on the Lower Rio Grande ; SchoU. The 
same aa No. 815 and 2235, Berlandier. 

Mimosa flbxuosa. Benth. in Gray, PI. WrigU. 1, p. 62. Hills near Rock Creek, July; 
Bigelow. 

Mimosa BiUNCimiA, Benth. PI Harlw. p. 12 ; Gray, PI. Wright. 2, p. 61. With the last, 
and at Eagle Si:ring8. Mababi, Sonora, June ; Thurher; Sierra del Pajarito ; Scliolt. 

Mimosa strigillosa, Torr. & Gray, Fl. 1, p. 399. On the Lower Eio Grande, May ; SchoU. 

Mimosa Berlandieri {Gray, MSS. Habbasiaa Eubicaulinm) : " fruticosa erecta ; ramis et 
intorduio pcfiolig aculeia sparsia brevibua rectis armatis, jiinioribua pitbernlia setia brevioribus 
parce strigosis ; stipulis ovato-subulatia ; piiinis 4— 6-jiigis, costis subtus strigosis ; foliolis 20— 
-fO-jugia linearibua acutiusculis glabellis obsolete 3— 4-nervati8 ; capitalis pediinculatis racemoso- 
snbpatiiciilatU; floribus tetrameria ; calyce minirao triincato ; leguraine breviter stipitato 
oblofgo-lineari nudo hirtello 8— 10-avtic«lato." Banks of the Lower Rio Grande, towards its 
month, November; SchoU. Environs of Matamoras ; Berlandier, (No. 3146.) 

SoiiRANKiA UNCiNATA, Willd. Sp. 4, p. 1043? Stone-wreath Hills, on the Lower Eio Grande, 
April ; S'Jtott. The pods not being sulfieiently mature, we cannot he certain of the species. 

Calliahdra iiumilis, Benih. in Land. Jour. Bot. 5,^. 103 ; Gray, PI. Wright. 2, p. 53. Near 
the Copper Mines, New Mexico, Jnne—August; Bigelow. 

Callundra reticulata. Gray, I. c. With the last; August. 

Calliandra herbacea, Engelm. in PI. Fendl.p. 39; Gray, PI. WrigU. I, p. 133. Low places 
on the Limpio, and near Eock Creek, July; Bigeloio. 

Calliandra Chamjbdrys, Engdm. I. c; Gray, I. o. On the more elevated parts of the Sierras 
of Sonora, March — July; Thurher, SchoU. 

Calliakdra (Poetoricensis, Benth. var.): glatriuacnia, inerrais ; ramulis gracilibus; pinnis 
bijugis, foliolis 4— o-jugia oblongis obtusisaimis sub remotis membranaceia baai inleriore 
Bubauriculatis ciliolatis, petiolis elongatia ; stipulis lanceolatis atriatis rigidia ; pedunculie 
petiole iongioribus ; calyce profunde 5-fido glohoso corolla glabra dimidio breviore. Arroyo 
de loa Samotas, Sierra Verde, Sonora, August ; SchoU. Peduncles 1^—2^ inches long. 
Flowers pale rose color. Filaments half an inch long. Pods not seen. 

Luc^NA RETUSA, Gray, I. c. p. 64. Hills and gravelly places between the San Pedro and the 
Rio Grande, Jitly— September ; Bigelow, SchoU. 

Acacia Wmgotii, Benth. in Gray, I. o. On the Rio Grande, Texas; and Siena del Pajarito, 
Sonora, July — August; SchoU. 

Acacia Greggii, Gray, I o. p. 65. Dry hills, E! Paso and down the Rio Grande to the 
Great Canon ; also hiUa and mountains along the Gila to California, May— July. 

Acacia rigidula, Benth. in Lond. Jour. Bot. 1, p. 501. Eocky hills, Leona. Also found by 
Dr. Edwards and Major Eaton near Monterey, Neuvo Leon. The slender spines are sometimes 
more than an inch long. 

Acacia EffiMEniANA, Scheele in Linncea, 21, p. 456. Fort Inge, Texas ; Parry. Mountains 
and rocky places, Presidio del Norte, August; Bigelow. 

Acacia tephkoloba. Gray, I. c. p. 65. Hills on the San Pedro or Devil's river, September ■ 
(in fruit ;) Bigelow. ' 



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62 UNITED STATES AND MEXICAN BOUNDARY. 

Acacia CotrLTBRi, Benth. I. c; Gray, PI. Wright. 2, p. 53. Eagle Pass and plains, and plains 
near Zoquete Oreek ; Bigelow. 

Acacia plexicaulis, BenlJi.; Gray, I. c. l,p. 65, adnot. Monterey, Neuvo Leon, &o.; Thurber. 
This is clearly the same as Gregg's plant. 

AcAaA CUSPIDATA, ScMecM. in Linncea, 12, p. 513; Gray, PI. Wright. I, p. 66. A. hirta, 
Nutt. in Torr. & Gray, Fl. I, p. 404. A. Texensis, Torr. & Gray, I. c. Plaina and dry places 
along the Eio Grande, and in New Mexico ; also in Sonora ; June — October. After a careful 
comparison of immeroua specimens of the first and last species here quoted with an original 
cpecimen of A. Texensis, I unite the whole without hesitation. 

Acacia constricta, Beittk. in Gray, PI. Wright. 1, p. 64. Hills along the Kio Grande, from 
El Paso to the Presidio del Norte ; also near Tascata, and in Sonora ; May — July, yometimea 
the leaves have only 1 or 2 pairs of pinnte ; but such occur chiefly on very short branches or 
spurs. The leaves and young branches are strongly p-abescent in specimens collected near the 
Presidio del Norte by Dr. Parry. 

Acacia ScHOTrn (n. sp.:) glabra; spinie stipularibus subulatis rectia ; foliis fasciculatis 
unijugis ; loliolis 3 — S-jugis filiformi-linearibus alternis ; legumine lineari complauato toruloso 
curvato, valvulis coriaceis. Near the Canon of San Carlos, at the Comanche Crossing of the 
Rio Grande, September, (in fruit); Parry. Branches flexuous terete. Petiole below the fork 
one-third ot an inch long. Pinnje an inch in length. Leaflets 2 lines long, and scarcely^ of a 
jine wide, thick. 8[iines 2 — 3 lines long. Peduncles slightly bracteate in the middle. Stamens 
very numerous. Legume 2 — 3 inches long, and ^ of an inch wide, elevated on a short stipe, 
6 — 9-seeded, curved into a serai-circle, or even a nearly complete circle. This is a very distinct 
species, but seems to be allied to A. constricta. 

Acacia Farnesiaha, Willd. A. Cavenia. Hook. <£ Am. Bot. Beechey, p. 2i ; Benth. Mimos. 
in Hook. Land. Jour. Bot. I. c. Common on the boundary from Texas to California, 

"Acacia torttiosa, WiUd. Sp. 4, p. 1083, Benth. Mimos. in Hook. Land. Jonr. Bot. 1, p. 392. 
A, albida. Lindl. Bot. Beg. t. 1317- Vachellia Lindheimeri seu minor, Engelm. MS. in 
herb. Gray. Plains near Eagle Pass on the Rio Grande, and on hill sides, Santa Rosa, Chi- 
huahua ; Bigeloii). Tamaulipas ; Berlandier. In flower this species is readily mistaken for A. 
Farnesiana ; but Dr. Engelmann had distinguished it even in that state. Flowering specimens 
have been confounded with A. Cavenia, which is only A. Farnesiana. The present species is 
well distinguished by its pod, which is elongated-linear, 3 to 5 inches long, narrow, nearly 
terete, moniliform, fleshy, and minutely tomentose ; seeds uniserial, compressed, black. The 
corolla is longer than in A. Farnesiana. The heads and peduncles are nearly glabrous in our 
specimens." — A. Gray. 

Acacia? crassifolium, Gray, PI. Thurb. p. 317. La Pcna, Cohahuila ; Dr. Edwards, Thurber. 

PiTKECOLOBiUM BREViFOLiEM, Benth. in Gray, PI. Wright. 1, p. 67. Rocky hills around the 
silver mines of Santa Rosa, Coahuila. January^ (with fruit of the preceding season ;) Bigelow. 

ROSACEJL. 

PRUNUS (Cekasus) ViRfiiNiANA, Linn. Sp. 1, p. 473. Dry ravines near Camp Baehe, New 
Mexico, and at the Copper Mines ; July; in fruit. 

Prenih Capollin, do. Prodr. 2, p. .'i39, (sub Ceraso;) Gray, Fl. Wright. 2, p. 544. Sides 
of the Limpio mountain, Texas; Bigdoio. Sierra del Pajaritos, &c,, Sonora; Schoft, Capt. E. 
K. Smith. 



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PEUNtJS DEMiBSA, Nutt. in Torr. <& Gray, Fl. 1,^. 411, (sub Ceraso.) On the mountains east 
of San Diego, California, June, in flower ; Fairy. A shrub seldom more than from 4 to 8 
feet high, 

Prunus iLiciFOLrA, Milt. I. c. (sub Ceraso,) t& N. Amer. Sylv. 2, p. 16, t. 47 ; Rook. & Am. 
Bot. Beechey, p. 340, t. 8^5. Near San Diego, and in other parts of California, May; Parry, 
Thurher. This ornamental species seldom attains a greater height than S or 10 feet. The 
pulp of the fruit is flesh color and rather thin, hut palatable. 

Prunds subcordata, Benih. PI. Hariw. p. 308. Eastern slope of the Cordilleras of California, 
and near San Felipe. A straggling bush 4 to 5 feet high. Fruit sub-globose, half an inch in 
diameter, the pulp thin and disposed to separate into two valves. 

Prunus minutielora, Engelm. in PI. Lindh. 2. p. 185 (sub Pruno) ; Gray, PI Wright. 1, p. 
68. Gravelly places and ravines between Devil's River and the Rio Grande ; also in Chihua- 
hua ; Parry, Bigeloio. 

Ndttallia cBBASfFORMrs, Torr. <& Gray, in Bot. Beecliey, p. 336, t. 82, & Fl. 1, p. 412 
Napa county, California, March— April ; TAurber. San Luis Obispo, in the same State ; the 
most southern station of this plant that has come to our knowledge. 

Spir^a arispolia. Smith, in Bees Cyclop.; Torr. <& Gray, Fl. 1, p, 4!6, Monterey, Califor- 
nia, May ; Parry. 

Spir.^.a dumosa, Nutt. in SooJc. Bond. Jour. Bot. 6, p. 217 ; Torr. in Stansb. Bep. p. 387, t. 4 
Mountains near the Copper Mines, New Mexico, May, in flower, and August, in fruit ; Bigelow. 
SpiR.aiA c^spiTOSA, Ntitt. in Torr. & Gray, Fl. I, p. 418. Sides of steep and almost inacties- 
fiihle rocks on the Rio Grande, about 25 miles below El Paso, in Chihuahua, June ; Bigdoio. 

Cbrcooarpos parvifolius, Nutt. I. c. p. 427; Sooh. Ic. t. 323. C. betulifolius, Nutt. I. c. 
Valley of the Upper Rio Grande, and westward to California. Flowers in May and June, fruit 
matures in September. The limb of the calyx early breaks away from the tube, and is carried 
up, with the petals and stamens, on the elongated style, and sometimes remains there until the 
fruit is considerably grown, 

COWANIA Mbxioana, D. Don in Linn. Trans. 14, p. 57^, t. 22, C. Stansburyana, Torr. in 
Stansb. Bep. p. 386, t. 3. In various parts of Sonora and western New Mexico, April — June. 
My extensive series of specimens show that the two species here brought together are connected 
by intermediate forms. 

CowANiA AKiiEFOLiA, ToTT. in Gray, PI. Wright. 2, p. 107, Crevices of calcareous rock on 
the Rio Grande above the mouth of Pecos, October, in flower and fruit ; Barry. 

AcsNA PIHSATIFIDA, Buiz & Pav. Fl. Per. 1, p. 68, t. 104; Torr. d Gray, Fl. p. iSO. 
(Tab. XIX.) Monterey, California, April; Parry. 

Adenostoma fascicuuta, Hook. & Am. Bot. Beechey,p. 139 (g 338; t. 30. Dry sandy hills 
and along the base of mountains, San Diego and Monterey, May ; Pan-y, Thurber. A thick- 
sot straggling bush, 7 — 8 feet high. 

Adehostoma sparsifolia, Torr. in Emory's Beport, p. 140. (Tab, XX.) Western slope of 
the Cordilleras of California, July; Parry. This species was first discovered by Major Emory 
on the same mountains, near Warner's Pass. Dr, Parry states, in his notes, that it is a shrub 
from 4 to 8 feet high ; hut Major Emory found some of it 30 feet high. The hark is reddish, 
and peels off in shreds. The leaves are solitary and alternate, narrowly linear (nearly half an 
inch long and half a line wide) sparsely dotted (as are the branchlets) with minute roundish 
glands. Flowers in rather loose terminal panicles. Pedicels very short. Calyx turbinate- 



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64 UNITED STATES AMD MEXICAN BOUNDARY. 

campanulate, with several lanceolate bracts at the base ; lO-striate, 10-toothed ; the teeth very 
obtuse. Stamens mostly 10, the filaments inserted on the outer crennlate margin of the disk, 
at the summit of the calyx-tube. Ovary and style as in A. fasciculata. Fruit not hnowa. 
This seems to be a very distinct species. We have never received the plant except from the 
station just noticed. 

Falluhia paradoxa, Torr. in Emory, Rep. p. 139, t. 2 ; Gray PI. Fendl. p. 41, d PI. Wright. 
\,p. 6S. Sieversia paradoxa, D. Don. Ravines and rocty places along the Upper Kio Grande, 
and near the Copper Mines, New Mexico, April — June ; the fruit ripe in August. 

HoRKELiA CUNEATA, Lindl. Bot. Reg. sitb /ol. 190T ; Torr. d Gray, FL 1, p. 432. Near 
Monterey, California, April ; Parry. 

PlTEKTILLa paradoxa, Nutt. in Torr. & Gray, Fl. l,p. 437; Lehm, Eevis. Potent, in Nov. 
Act. Leopold-Cois. 23, (suppl.) p. 194, t. 62. Wet places on the Kio Grande, between E! 
Paso and San Elceario, June, (flowers and fruit ;) Bigelow. 

PoiENTiLLA glakdulosa, Lindl. Bot. Peg. t. 1583; Lehn. I. c. p. 48. Monterey, California, 
May; Parry. Flowers ochroleucous., 

PoTENTJLLA Thueberi, Gray, PI. Thurb. p. 318 ; Lehm. I. c.p. 92. Around the Copper Mines 
of New Mexico, July ; Thurher, Bigelow. 

PoTENTiLLA Akserina, Linn; Lehm. I. c. p. 88. San Francisco and Monterey, California, 
April : Thurher, Parry. 

Fragaria vesca, Linn.; Tor^\ & Gray, Fl. \,p. 448. Pine woods nessr Monterey, April. 
Parry . 

Fragaria Ciiilen'sis, Ehrh.; Torr. & Gray, I. c. Sand-hills near San Francisco, California, 
April ; Parry. 

EuBUs Neo-Mexicasus, Gray, PL Wright. 2, p. 55. Sides of Ben Moore, near the Copper 
Mines, June, in flower and fruit ; Bigelow. The peduncles are sometimes 3-flowered. Allied 
to It. trilobns, Moc. & Ses. 

EuBU.S TiiiviALis, Mich, (k Fl. 1,^. ^96? Moist shady places, San Luis Obispo and San Diego, 
California ; Parry. Mabibi, Sonora, June ; Thurher. 

EUBUs DRSiNUS, Cham. & SoMeeht, in Linncea, 2, 2>- H ; Torr. <& Gray, Fl. 1, p. 456. New 
Almaden, Calilbrnia, March — April ; Thurber. 

EuBUS Ndikanus, Mocino; Torr. dc Gray, I. e. p. 450. Monterey, California, May ; .Parry. 

KosA GTMNOCAEPA, Nutt. in Tort. & Gray, I. c. p. 461. (Tab. XXI.) San Diego, California, 
May ; Parry. A variety with larger leaves occurs at the same place. 

Rosa blanda, Ait. L^e^o. {ed. 1) 2, p. 202. Moist places between the Limpia and the Rio 
Grande, and westward to California; April — May. 

AMELANCHHiit Canadensis var. alnipolia, Torr. & Gray, Fl. 1, p. 473. Near the Copper 
Mines, New Mexico ; Thurber. 

PnoTiNiA AiiBUTiFOUA, Lhidl. in Linn. Trans. 13, p. 103, d Bot. Reg. t. 491 ; Torr. & Gray, 
I. c. Monterey, and Cordilleras of California. 

Vauqoelinia coRyjiBOSA, Corr. in Humb. d Bonpl. PI. JEquin. 1, p. 140, (. 40. Spira;a 
Californica, Torr. in Emory, Rep. p. 140. Sierra Verde, Sonora, July, in flower, Schott. 
High mountains near the Gila, November, in fruit ; 31aJ. Emory. Dr. Parry's specimens 
accord with the description and figure of Humb. & Bonpl,, except that the leaves are smaller 
and less deeply toothed, In the plant collected by Maj. Emory, the leaves are ovate-lanceolatf 
and serrate. 



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LYTHRACEiE. 
LOKGIPES, Gray, PI. Wright. 1, p. 68. Wet places along the Rio G-rande, July to 
October, 

Nes^asalicifolia, //. B. K. Nov. Gen. & Sp. 6, p. 192. Shore of the Eio Grande, from 
Binggold Barracks down to the mouth of the riyer, September, (in flower and fruit); Sclwtt. 

Lytiietjm alatum, FursJt, Fl. 1, p. 334 ; Torr. & Gray, Ft. 1, p. 482. Common along the 
Eio Grande and westward to Sonora, April to September. 

CurHEA Wkishtii, Gray, I. c. p. 56. Between Babocomori and Santa Cruz, Sonora, 
September. 

Ammannia latipolia, Linn. Sp. 1, p. 119; Torr. & Gray, Fl. 1, p. 480. Guadaloupe, 
Chihuahua, October ; Thurher. 

Ammannia Wkigiitii, Gray, I, c. p. 55. Wet placea in valleys of the Limpio mountains, 
July ; Bigeloiu. Margin of water holes, Sonora, September ; Tliurber. 

ONA GRACES. 

Zauschnbria Califobkioa, Presl. Eel. Eainlc. 2, p. 28, t. 52 ; Torr. & Gray, Fl. 1, p. 486, 
Sonora, September ; Thurher. 

Epilobium COLORATUM, MuJil. in Willd. Emim. l,p. 411. Between tlie Limpio and the Rio 
Grande ; also at the Copper Mines, June to July ; Bigdow. Valley of the Mimbres ; Thurher. 
Caiion of Guadaloupe, Sonora, April ; Capt. E. K. Smith, 

(Enotheea biekkis, Linn.; Torr. & Gray, Fl. 1, p. 492. Along the Eio Grande, from New 
Mexico to Laredo. Var. hirstitissima, Gray, Fl. Fendl. p. 43. Chihuahua; Thurher. 

QilNOTHERA Jamisii, Torr. dt Gray, Fl, 1, p. 493 ; Gray, PI. Lindh. 2, p. 189. Borders of 
Devil's river, Texas. 

(EnotubraskuatAjXimw.; Torr. d;Gray,Fl. 1,^.494. Near the Copper Mines, July ; Bigeloio. 

CEhotiieea albicaulis, ISfutt. Gen. 1, p. 245 ; Gray, Fl. Wright. 1, p. 69 <& 2, p. 56. Sand- 
hills along the upper Eio Grande, and valley of the Gila, common, 

(Enotheba CORONOPIFOLIA, Torr. <& Gray, Fl. I, p. 495. Banks of rivers, southern parts of 
Kew Mexico. 

ffiNOTHERA ROSEA, ^ii,; FC. Prodr. 3, p. 51. Valley of the Santa Cruz, Sonora, June; 
Schott, Thurher. 

(Enothera MiesoURlENSia, Shns, Bot. Mag. t. 1592 ; Torr. & Gray, I. c. p. 500. Valley of 
Devil's river, Texas, April ; Schott. 

(Enotkbra WRionin, Gray, PI. Wright. 2, p. 57. Roelsy ravines near El Paso and Santa 
Barbara, April ; Bigelow, Thurher. 

(Ekothbra beachycarpa, Gray, PI. Wright. 1, p. TO; d 2, p. 57. Valley of the San Telipe, 
and near Frontera, western Texas, April ; Thurher, Bigelow. 

(Enotheka triloba, Mitt.; Torr. <& Gray, Fl. 1, p. 499; Gray, I. c. Dry bed of Lake Gusnian, 
northern Chihuahua, April; Bigelow. 

(Enothera primiveriSj Gray, PI. Wright. 2, p. 58. Sandy and gravelly placea along the 
upper Rio Grande, and in northern New Mexi-co, March — April. 

(EsoTiiERAiiA^amATA, Nult., in Torr. <& Gray Fl. I, p. 500. Santa Barbara, New Mexico; 
Ihurher. 

(Ekothbra sbrruIuITA, Nult.: Torr. & Gray, I. c, p. 500, Western Texas, and in New 
Mexico, April to September, 
9 k 



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6f> UNITED STATES AND MEXICAN BOUNDARY. 

CEnotheea LAVANDULiBPOLiA, ro?T. (£ Gray, I. G. Between Eagle Springs and Van Horn's 
well, Texas, June; Bigelow. 

(EsotseraKartv^egi, Benih. Fl. Ilarttu. p. 1; Gray, PI. Wright. \, p. '72. (E, Fendleri, 
Gray, PI. Fendl. p. 45. On the Eio Gmnde and its tributaries, from El Paso to Eagle Pass; 
April — June. 

CEsotuera tubicola, Gray, PI. Wright. I, p. Tl. Gravelly places neart he Limpio, July; 
Bigelow. 

(Ehotheea cham^nbrioides, Gray, pi. Wright. 2, p. 58. Frontera and Cook's Spring, Texas, 
April; Bigeloio. San Bernardino and Santa Maria, Chihuahua, March; Perry. 

CEnotiiera bistorta, Nutt., in Torr & Gray, Fl. 1, p. 508. San Pasqual, California, May ; 
Thtirber. 

CEnothera gaura^floka, Torr. <& Gray, Fl. p. 510. Valley of the Gila, Sonora, May ; 
Schott. Dry hed of a river near Monterey, California; Dr. Attdrewfi. 

(Enotheea clavjbpormis, Torr. & Frem. in Fremont's 2 Jlep. p. 314; Torr. in Pacific liailroad 
Expjl. 5,^. 360. Colorado desert ; Schott. 

CEnothera cardiophtlla, Torr. I. c. "With the last; Schott. 

tENOTHEEA viKOSA, Lindl. Bot. Beg. t. 1880. San Diego, California, May; Tkurher. 

OENOTHERA VIMINEA, Dougl. With the last, May ; Thurber. 

Gatira villosa, Ton\ in Ann. Lye. Nevj Jorh, 2, p. 200. Mountain ravines and moist places 
near Rock creek, July; Bigehto. 

Gaura Drummondii, Torr. <& Gray, Fl. 1, p. 518. On the lower Eio Grande, October, (in 
flower and fruit) Scltott. 

GaL'ra sueeulta, Fngelm. in PI. Lindh. 2, p. 190; Gray, PI. Wright. l,p. T2. Western Texas 
on the lower Puo Grande ; Schott. 

Gaura parviflora, Dougl., Torr. & Gray, Fl. l,p. 519. Western Texas and New Mexico ; 
also in the valley of the Giia, May — July. 

Gaura coccikea, Nutt., Torr. <& Gray, I. c; Gray, PI. Wright. 1, p. 73. Organ mountains. 
New Mexico, and down the valley of the Rio Grande to Eagle Pass, west to Sonora, April — 
July. 

Stenosiphon vikgatus, Spach.; Monog. Onagr. Torr. S,'Gray, Fl. 1, p. 520. Central Texas ; 
Thwrber. 

EuLOnus Calieornicus, Nati. in Torr <& Gray, Fl. l,p. 5\d. Valley of the Giia, May; Schott. 
San Pasqual, California; Thurber. 

Jussm;a eepens, Linn. Mant. p. 381; Torr. & Gray, I. c. p. 520. Southwestern Texas and 
Sonora, April to October. 

LuDWieiA NATAHS, Fll. S7c. I, p. 581. Western Texas, October ; Bigelow. Ojo Caliente, Chi- 
huahua ; Thurber. A form with much smaller leaves than usual, was found in the Limpio 
liver, by Bigeloio. 

Proserpinaca PALUSTRis, Linn. Torr. <& Gray, Fl. ~\.,p. 528. Pedro Pinta, Texas, October; 
Bigeloio. 

MTRi0PHyTA:UM HBTEROPnYLLmr, Michx. Fl. 2, p. 191. Ojo Caliente, Chihuahua ; Thurber. 

LOASACEiF,. 

Cf-vallia sinuata, Lag. Nov. Gen. d Sp. p. 11, t. 1; Gray, PI. Wright. 1, p. li. Common 
on hill sides aloni; the Rio Grande ; also, in Sonora, May to October. 



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BOTANY. 67 

Petalonyx TnuBBBBi, Gray, PI. Tlmrh.p. 319. (Tab. XVII.) Valley of the Gila, May- 
June, Thurher; Schoit. 

EucHiDB BARTOSioiDES, Zucc.j Gray, Fl. Lindli. 2, p, 191, Caiiona of the Rio Grande below 
San Carlos, August — October; Furry. Rocky places, Howard's Springe; Bigelow. Ringgold 
Barracks; Schott. 

Mentzelia aleicaulis, Bougl.; Torr. (& Gray, Fl. 1, p. 534. Eocby hills on the upper Rio 
Grande and its tributaries, also in Sonera, March to September. Mountains east of San Diego, 
California ; Farry. The oily seeds are pounded and used by the Indians as an ingredient of 
their Finole mantiea, a kind of cake. 

Mgstzelia Whightii, Gray, Fl. Fendl. p. 48. Mountain ravines. Rock Creek, July ; Bigchw. 
Valley of San Bernardino, Sonora, April; Ga'pt. E. K. Smith. 

Mestzelia multiflora, Nuti. Fl. Gamb. p. ISO; Gray, Fl. WrigU. 1, p. 74. Hill sides along 
the Rio Grande, from El Paso downward to Laredo, April to July. 

Mentzelia olioospekma, Nutt. in Bol. Mag. t. 1760; Torr. & Gray, Fl. 1, p- 533. Wet 
ravines on the Cibolo of the Rio Grande, July ; Bigelov;. 

PASSIFLORACEiE. 

Passifloea afpinis, Engelm. in Gray, PL Lindh., 2, p. 233. Devil's river, Texas, October 
(in fruit) ; Bigelow. 

Passiflora tenuiloba, Engelm. I. c. ^x 192. High prairies and hill sides. Western Texas, 
along the Rio Grande, September, October ; Farry, Sohott. 

Passifloka FffiTiDA, Linn. Amcen. \,p. 223, t. 19 ; Sp. p. 1359. Thickets, Eagle Pass, June; 
Schoit. A variety which seems to be intermediate between P. fcetida, Oavan. and 1'. hibisoiiblia. 
Lam., having the leaves of the former and the pubescence of the latter. Mr. Schott found on 
the Sierra del Pozo Verde, in Sonora, a form with velvety pubescence, and almost 3-parted 
leaves, with the divisions more or less lobed and toothed. 

Passiflora Mesicana, i7«ss. Ann. Mm. p. 108; t. 38, DC. Frodr. 3, p. 324. Tubac, Sonora ; 
Thurber. Leaves glaucous, 2-lobed below the middle, the lobes moderately diverging, 1 to 1^ 
inch long from the bifurcation, marked near the base with a few round brownish glands. 
Flowers three-fourths of an inch in diameter, pale purple. 

CUCURBITACE^. 

SiCTMUM LiNDHEiMERi, Gray, Fl. Lindh. 2, p. 194, & PI, WrigU. 1, p. 75. Presidio del Norte, 
July; Farry. Arroyos of the Limpia, .Bijetey. Lower Rio Grande ; &Ao«. Var. tenuisectum. 
Gray, I. c. Between the Leone and the Rio Grande; Bigelow. Mountains of Sonora; Schott. 

Cucurbita pekbnnis. Gray, Fl. Lindh. 2, p. 193. Plains between the Rio Grande and the 
Pecos, June — July; also at the Copper minea ; Bigelow. Bottom lands of Devil's river, April 
to October ; Schott. Grows in large patches ; fruit the size and shape of a small orange. 

CucmiBiTA digitata, Gray, Fl. Wright. 2, p. 60. Valleys among the mountains of Sonora, 
July (in flower;) Schott. 

ApODANTnERA? TJSDULATA, Gray, I. c. Canons of the Rio Grande, June; Bigelow, Farry. 
Santa Cruz, Sonora, June ; Schott, Thurber. The Sonoriana call the fruit of this plant Melon 
de Cayoia. 

Cyclahtheka dissecta, Arnoit, in Rook. Jour. Bot. 3, p. 280 ; Gray, Fl. Wright. 1, p. 75, 



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68 UKITED STATES AlND MEXICAN BOUNDARY. 

Alluvial borders of the Gila, May; Schott. Mountains and rocky places ; Puerto de I'aysaiio, 
Sonora, September {with flowers and young fruit) ; Bigdoiv. 

Elaterium? Weightii, Gray, PI. Wright. Fl. 1, p, CI. Magdalena, Sonora, July ; Tlmrler. 

Elatekium? Coulteri, Gray, I. c. Hills near the Copper Mines, August, (in flower and fruit.) 
We fear not sufficiently distinct from the last. We have specimens which are almost ec[u»l in 
resemblance to both species. 

CACTACEiE. 

The plants of this family, collected on the Boundary Survey, are described by Dr. Engeltnann, 
in a separate article of this volume. 

GKOSSULACEili;. 

EiBEs Californicuji, Hook, d: Am.; Gray, m Bot. Wlnppl. Hep. p. 8S. Napa couuty, Cali- 
fornia, March ; Thurber. 

ErnES DiVARiCATXJM, Dougl. in Bort. Trans., 7 p. 515 ; Lindl. Bot. Reg. t. 1559. In moist 
places, forming thick clumps, near Santa Barbara, California, March ; Barry. 

HiBES AUREUM, PuTbli, Fl. 1, p. 164. Var. tenuifloeum. R. tenuiflorum, Lindl. Bot. Reg. t. 
1274. Upper Kio Grande, and at the Copper Mines ; also in Chihuahua and Sonora ; March to 
April, Salinas river, California ; Parry. 

Ribes Menziesii, Pursli, Fl. 2, p. 732. [Tab. XXIII.) Santa Barbara, California ; Pm-ry. 
A tall and handsome species. 

EiBES SPECiosuM, Pursh, I. c; Lindl. Bot. Beg. t. 1557 ; Twr. <& Gray, Fl. 1, p. 545. In 
ravines, from Monterey to San Diego, California, May ; Parry. The most showy species of 
this genus. Its height is commonly from 6 to 8 feet. 

EiBES MALVACEUM, Smith in Bees Cyclop.; Torr. <& Gray, Fl. 1, p. 552. Common along the 
coast of California, particularly at Monterey and Santa Barbara, April ; Barry, Thurber. A 
shrub with spreading branches, sometimes ten feet high. Flowers pale rose color ; or in shady 
places, nearly white. 

EiBES SANSUiNEUM, Pursh, Fl. 1, p. 164 ; Torr. d- Gray, Fl. 1, p. 551. San Pasqual, Cali- 
fornia, May ; Thurler. 

EiBES LEPTANTUTJM, Gray, Bl. Fendl. p. 53, it' Bl. Wright. 2, p. 63. Near the Copper Mines, 
and valley of the Mimhres, April ; Bigelow. 

CEASSULACEiiJ. 

Sebum Wbightii, Gray, Bl. Wright. 1, p. 76. Hills and rocky places ; Mount Carmel, Chi- 
huahua, September and October ; Parry. Mountains around the Copper Mines, and Puerto 
de Paysano ; Bigdoiv. 

Sebum spathxiljefolium. Hook.; Torr. <& Gray, Fl. 1, j:i. 559. Eocky hills, PinascLuitas, Cali- 
fornia, May ; Thurber. 

Sedum edule, Nutt. m Torr. <& Gray, Fl. l,p. 560. Dry banks near the sea at San Diego, 
California ; associated with Echeveria ; Parry. 

EciiEVERiA sa'EKTiPLOEA, Gray, PI. Wright. I, p. 7C. White rocks near Eock Creek, western 
Texas, July ; Bigelow, 

Echeveria pulveetilenta, NtUt. in Torr. <& Gray, Fl. 1, p. 560. E. farinosa, Lindl. in Lond. 
Hort. Jour. 4, p. 292 ? Coronados Islands, California, May ; Thurber. 



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EcHGVERiA LAHCEOLATA, Nutt. I. c. (Tae. XSIV.) Dry clay lianJis near the sea, at San Diego, 
California, June ; Parry, Coronados islaods ; Tkurher. 

SAXIFBAGAOEiB. 

Saxifraga Parkti (n. sp.) : caudice subterraneo tuberoso ovato ; foliis radicalibus suborbicn- 
]ato-cordati8 incieo-lobatia, lobis denfcatis ; venis subtus petiolisque pubescentibus ; scapis nudis 
gracilibus ; iioribua paucis laxe paniculatis ; calycibus carapanulatis liberie, dentibiis brevibus; 
petalie lanceolatia brevi unguiculatia, 8tylis ovario subfequalibus in fmctu divergentibua, (Tab. 
XXV,) Dry hills near San Diego and San Luis Bey, California^ November-^December ; Parry. 
Tuber about tiie size of a hazel-nut, fleshy. Leaves all radical, and withering away eoou after 
the flowers appear, about an inch in diameter, slightly pubescent above; petiole nearly as long 
as the lamina. Scapes 4-8 inches high, commonly 2-4 from each tuber, a little pubescent. 
Flowers 4-T in a loose panicle or cyme. Calyx marked with 10 btrong dark brown nerves, the 
teeth triangular, rather obtuse, and about half the length of the tube. Petals white, nearly 
twice the length of the calyx teeth. Stamens 10 ; filaments subulate, the alternate ones 
rather shorter than the others. Carpels united below, rostrate and diverging above, pointed with 
the slender styles, which are as long as the beaks. Seeds dull, angularly 4-ribbed. A remark- 
able species, with the calyx and habit of a small Heuchera, but it is decandrous and the ovary 
is wholly free as well &■> cellei 

Saxifraoa ViKGisiENbi Mich^ PI 1, p. 269 ? Cyme very i'ew-Ilowcred, but in other respects 
like the eastern plant. ISeii San Diego, California ; Parry, 

Heuchera MiCRAHTHA B iijl in Lit. Peg. t. 1302; Torr&Graij, Fl. 1, oT^. Ravines near 
Monterey, California, Ma\ Paiiy 

B.EVCB-BRABXSB^SCE}iS^Torr.inStansh.Eep.p.Z88,t.5;Gray,PLWrigkt. 2, p. 03. Organ moun- 
tains. New Mexico, November, (in fruit ;) Bigeloio. 

Heuchbea parvifolta, NuU. in Torr. dt Gray, Fl. l,_p. 581, Gray, I, c. p. 04. Copper Mines, 
New Mexico, August ; Bigelotv. 

Litiiophragma cTMBALARiiB, Torr. & Gray, Fl. l,_p. 585. Shady ravines near Santa Barbara, 
California, March ; Parry. 

LiTHOPHEAGMA IIETEROPIJYLLA, Sook. &Arn.; Torr. d: Gray. I. c. Near Monterey, California, 
March — May ; Parry. Napa Valley ; Tkurber, 

Lepuropetalon SPATHULAIUM, Ell. Sh. 1, p. 3T0 ; Torr. d Gray, I. c. p. 390, Santa Cruz, 
Sonora, March ; Parry. 

Fenblera rupicola, Engelm. <& Gray, PI. WrigJd. p. 77, t. 5, Organ mountains, New Mexico, 
and rocky places along the Eio Grande, down to the Presidio, March — May. 

PniLADELPHUS SERPYLLiEOLius, Gray, PI. Wright. \, p. 77. Mountains and rocky places on the 
Rio Limpio, Texas, and at the Copper Mines, June^July ; Bigehw. Sonora, April ; Capt. E. 
K. Smith. 

UMBELLIFER^. 

Hydrocotyle UMBELLATA, Linn. Sp. p. 234 ; Torr. <& Gray, Fl. ~i.,p. 599, Eio San Antonio, 
Texas ; Sclioit. Devil's river, September ; Bigeloio. Bachuachi, Sonora, June ; Tkurber. 

Hydrocotyle natass, CyrilL; Torr. c& Gray, I. c. C, prolifera, Kellogg, Proo. Calif. Acad. 
Nat. iS'c- 1, p. 15. Borders of brooks, Monterey, &c., California; Parry. 

Hydeocotyle ranukculoides, Linn. f. ; Torr. rf; Gray. I, c. Fronteras, Sonora, Mav ; 
Tkurber. 



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70 UNITED STATES AND MEXICAN BOUNDARY. 

Bo-WEEsn LOBATA, Buh & Fav. ; Torr. d Gray, I. c. p. 601. Moist shady places, near San 
Diego and Monterey, California ; March— April ; and on the Eio Gila; Parry. 

Samicula Mekziesii, Sook. <& Am. Boi. Seeckey,p. 34T ; Torr <£ Gray, I. c. p. 602. Eavines 
near Monterey, California, April ; Parry. 

Sakicdla EiPiNNATjTiDA, Doitgl. in Hoc?;. Fl. Bor.-Arn. l,p. 258, (. 92. White Oak plains 
north of San Luis Obiapo, and in other parts of California, March — April ; Parry. 

Sanic«la laciniata, Book. (& Am. Boi. Beecli. p. 347. S. nudicaulis, Sooh. d Am. I. o. 
Monterey, California ; Parry. 

Sanictjla jiECTOPCiDES, Mook. (t Am. I. c. ; Booh. Fl. Bcr.-Am. 1, p. 258, I. 01. Monterey, 
California, April ; Parry. 

Erykgium Leavekivoktiiji, Torr. <£ ffra?/, Fl. I, p. 604. Plains and rocky places between 
Devil's river and the Rio Grande, September ; Bigelow. Piedras Plntas, western Texas; Schott. 

Eeyngium Wrightii, Gray, PI. Wright. \,p. 78. Western Texas, on the Rio Grande, June ; 
Sckott, Bigeloto. Sonora, June — September ; Thurier, Capt. E. K. Smith. 

Ekyngium difpusum, Torr. in Arm. Lye. N. Yorh, 2, p. 207, cfc in, Marcy Ptep. p. 286, t. 6. 
On the lower Rio Grande, May ; Schoft. 

Berula ANausTiEOLiA, Koch ; Gray, PI. Fendl. p. 55, (6 PL Wright, 2, p. 65. Marshes of 
the Limpio, Texas ; and at the Copper Mines, July, (in flower and fruit ;) Bigeloto. Tucson, 
Sonora, May ; Schott, 

Leptocaulis echinatus, Nutt. in DC. Prodr. 4:, pi. 107 ; Torr. c^ Gray, Fl. 1, p. 609. Plains 
between Fort Fillmore and tlie Organ mountains, and mountains near Lake Santa Maria, 
Chihuahua, April; Bigeloto. On the lower Rio Grande ; Schott. Sonora; Parry. 

CicuTA maculata, Linn.; Torr. dc Gray, Fl. l,p. 610. Shady moist places on the Limpio and 
Mirabres, July ; Bigdoiu, Thurher. 

Daucosma laciniatum, Engelm. <& Gray, PI. 2, p. 21 0. WoKteni Texas, October, (in fruit ;) 
Thurier. Copper Mines ; Bigelow. 

Cymopterus MOSiANUs, Nutt. in Torr. dc Gray, Fl. l,p. 624 ; Gray, PI. Feiidl. p. 56 ; <C PI. 
Wright. -\.,p. 79. 

Cymopterus Femdleri, Gray, PI. Fendl. p. 57? On the upper Rio Grande, Texas, and 
Chihuahua ; Bigeloto, Parry. 

Thaspium ? MOKTAKUM, Gray, PI. Fendl. p. 57, var. tentjifolium. Gray, PI. Wright. 2, p. 65, 
At the Copper Mines, New Mexico, June, (in flower ;) Bigelow. 

Peucedanum dasycarpum, Torr. & Gray, Fl. 1, p. 628. Southern California ; the particular 
station not recorded ; Parry. The fruit is nearly twice as large as in Douglas' original 
specimen, but in other respects his plant resembles ours. 

Peucedanum PABViFOLiuM, Torr. d Gray, I. c. Pine woods near Monterey, California, April 
(in flower, and with nearly mature fruit) ; Parry. Specimens from th.e same place, collected 
by Major Wm. Rich, have ripe fruit, which is nearly orbicular, from the unusual breadth of 
the winged margins. 

Peucedakum folkicdlacedm, Nutt. in Torr. d Gray, I. c. f San Luis Rey, California ; Parry. 
We cannot be certain of the species, for want of the fruit. The divisions of the leaves are 
broader than in the ordinary forms of this species. 

Deweya aegtjTA, Torr. d Gray, I. c. p. 641, Near Santa Barbara; Parry. (Tab. XXVI.) 

EuRYPTERA LXiciDA, Nult. in Torr. c& Gray, Fl. 1, p. 629. (Tab. XXVll.) Gravelly hills 
north of San Diego, California, March ; Parry. 



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Heeacleum lanatum, 3Iiclix. Fl. 1, p. 16(5; Torr. & Gray, I. c. p. 0U2. Borders of rivulets 
near Konterey, CaHfomia, May, (in flower); Parry. 

Daucus pusillus, Miclix. var. scaber, Torr. & Gray, I. c. p. 63G. 

OsMORiiizA occiDENTALis, NuU. in Torr. ch Gray, Fl. 1, p. 639. Pine woods, Monterey, 
California ; Parry. 

OEilOKRHIZl BEAOm-POBA, Torr. in Jour. Acai. Nal. Sa. I'Ml. n. scr. 2, p. 79. Tm- PI 
Whippl. p. 93. With the last ; Farry. 

ApiAsmnM ASanBTiroiinjf, NuU. in Torr. <£■ Gray, Fl. 1, p. M4. (Tab. XXVIII.) Dry 
grassy hills, San Luis Key, California ; Parry. 

COENACE^. 

CoKXUS PUBESCESS, NuU. in To-rr. & Gray, Fl. 1, p. 652 (sub var. C. sericea,) & Sylv. 3, p. 
54. Torr. in Bat. WMppl. Pop. p. 95. San Luis Obispo and San Lnis Eey, California ; Pa.rry. 
A shrub 10 to 12 feet high. 

CoKNUS NuTTALLir, Auduhm, Binho/Amer. i. 367 ; Torr. d: Gray, I. c; Natt. Sylv. 3, p. 51, 
t 97. Jlontcrcy, California ; .farry. 

CAPRlFOLIACEyE. 

LoHicEBA DIMOSA, Gray, PI. Wright. 2, p. 66. Hills at the Copper Mines, New Hexioo ; 
June, (in flower) ; and on the Limpio, July, (in fruit) ; Pigelow. Hills near the Mimbrea^ 
May; TImrier. Santa Cruz mountains; Sonora ; Oapt. E. K. Smith. "A luxuriant vine." 
Corolla pale greenish yellow, ringent, about three-fourths of an inch long, the tube slender, 
not gibbous. Filaments smooth, except at the base. Stylo hairy. Except in the pubescence 
I see little to distinguish this from L. albiflora. 

LomOBlA ISTOtnoiATA, Bo.nb; Torr, d Gray, Fl. 2, p. 9. Monterey and other parts of 
California, April ; Parry, Tlmrber. Stem 6 to 8 feet long, usually reclining on other plants. 
Leaves somewhat persistent. Flowers red and orange. Berries black. 

LoNICERA SDB3PICATA, Hook. & Am. Pot. Beechey,p. 349 ; Torr. <& Gray, I. c. (Tab. XXIX.) 
Busby places on the mountains east of San Diego, California, June ; Parry. Plant 3 to 4 
feet high. Flowers yellowish. 

STJIPHOBIOAiipiiB MOLLIS, S„U. iV Torr. d Gray, Fl. 2, p. 4. Woods near Monterey, California, 
April ; Parry. 

Sy,iiphoeica»pus BOTUMmoLira, Gray, PI. Wriyht. 2, p. 66. Organ mountains, Hew Mexico ■ 
Farry. Hills at the Copper Mines, August, (flowers and fruit); Blgehw. A form with per- 
fectly smooth and glaucous leaves was found near the Mimbres by Dr. Bigelow. 

Sampoous oiaoca, Null, in Torr. d Gray, Fl. 2, p. 13. Var. foliis anguste lanceolatis. Gray, 
PI. Wright. I. 0. Sides of Ben Moore, near the Copper Mines, June ; Bigdom. Not very dis- 
tinct from tlie next. 

Sambucos Mixicana, Pred; DC. Frodr. 4, p. 323 ; Gray, PI. Wright. I. c. Banks of the Bio 
Grande, near EI Paso, where it becomes a low tree, 12 inches in diameter at the base ; Bigdow 
Near Monterey, California, sometimes 25 feet high, August; Parry. Mabibi, Sonora ; Tlmrher. 



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UNITED STATES AND MEXICAN BOUNDAKY. 



EUBIACE2E. 

Galium Aparine, Linn. Sp, p. 108, Sonora, June ; Thurber. 

Galium asperimum, Gray, PI. Fendl. p. 60. Wet ravines, Organ mountains, New Mexico, 
April ; Bigelow. Annual. Leaves 6 to 8 in a whorl. Not very distinct; from G. Aparine. 

Galium CALiFoaNicuM, Hook. & Am. Bot. Beech, p.^i-'i] Torr, t& Oray, Fl. 2,p.20. Pine 
woods near Monterey, California ; Parry. 

Galium proliperum, Gray, Fl. Wright. 2, p. 67. Kocky hills, El Paso, April. 

Galium microphyllum, Gray, PI. Wright. 1, p. 81. Eocky places and sides of mountains 
along the upper Eio Grande, and at the Copper Mines, April. 

Galium buffruticosum, Nut6. in Torr. &, Gray,Fl. %^p. 21. San Diego, California; Thurher. 

Galium Wrigiitii, Gray, PL Wright. 1, p. 80, Burro mountains, and Mountains of Muerte ; 
also on the Eio Grande, TO miles telow El Paso. The upper leaves, and sometimes the lower 
also, ave merely scabrous, and not hairy. 

Cepdalasthus occidentalis, Linn.; Torr. <& Gray, Fl. 2, p. ."1. Valley of the Eio Grande 
and westward to California, June — August. 

BouvARDiA hirtella, H. B. K. Nov. Gen. tfi 8p. ;!, p. 384 ; Gray, Fl. Wright. 1, p. 80. 
Canons of the Eio Grande, June — July ; Parry, Bigelow. 

Oldbnlandia anoustifolia, Gray, Fl. Wright. 2, p. 68, Eocky places along the Eio Grande 
and its tributaries, from El Paso downward, June — August Honora; Thurher. An extremely 
variable species. 

Oldenlandia AOEROSA, Gray, PI. Wright. I. c. Pledyotia acerosa, Gray, Fl. Wright. 1, p. 81. 
Dry hili-sides. Devil's river and along the Eio Grande, September — October. 

Oldenlandia eubra, Gray, I. c, Hedyotis rubra, Qavan. Hills at the Copper Mines, June; 
Bigelow. 

Oldenlandia iiumisusa. Gray, I. c. Hedyotis humifusa, Gray, PI. Lindh. 2., p. 216. Sand 
hills, Western Texas ; Bigehio. 

DioDiA TERES, Walt. Fl. Car. p. 87 ; Torr. & Gray, Fl. 2, p. 29. On the lower Eio Grande ; 
Schott. 



VALEEIANACEiE. 



Valeriana sylvatica, Bichards. App. Franhl. Jouri 
4t. Hills at the Copper Mines, April, May ; Bigelow. 

Valeriana eduus, Nwtt. in Toir. £& Gray, Fl. I. 
Torr. & Gray, I. c. Six miles west of the Copper Min 

Plectritis congesta, Lindl.; DO. Frodr. 4, p. 631, 
tbrnia, April ; Parry. 



, 2, ^. 2 ; Torr. & Gray, Fl. 2, p. 



.; Gray, PI. Fendl. p. 61. V, ciliata, 

s, April, May ; Bigelow. 

Monterey and east of San Diego, Cali- 



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COMPOSITAE, (by A. Gray.) 

Vernonia JAJlBSn, Torr. & Gray, Fl. 3, p. 58 ; Gray, pi. Wright, l,p. 82, d2,p. 69; d in 
Bot. Whipp. B&p. R. B. Surv. p. 95. Common in western Texas. 

Vernonia Lindiibimbri, Gray cfe Engdm,., PI. Lindk. 2, p. 217. Southern Texas. 

Pectis angustipolia, Torr. in Ann. Lye; Gray, PL Wright, I. c, etc. Pectidopsia angustifolia, 
DC. Dry hills, western Texas to the Copper Mines, New Mexico, etc., and south to the Eio 
Grande. According to Mr. Thurber, the fresh plant exhales the odor of lemon balm. 

Pectis eilipes^ Harv. <£ Gray, in PI. Fendl. p. 62 ; Gray, PL Wright, 2, p. 69, Gathered 
by all the collectors ; apparently common from the Fvio Grande to Chihuahua and western 
Sonora. 

Pectis papposa, ITarv. d Gray, L c. This has now been traced nearly across the continent, 
from Presidio del Norte {Blgelow, Parry, etc) to the Gila and Cocospera, {Schott, Thurber, etc.) 

Pectis longipes, Gray, PL Wright, 2, p. 70. Santa Cruz, Sonora, and vicinity ; found by all 
the collectors. Berlandier collected it in Nuevo Leon ; it is No. 3159 of my disi.ribution of his 
reliquim. 

Pecits imbereis. Gray, I. c. Besides Wright's specimens, gathered on the ^onoita, Sonora, 
from which this remarkable species was characterized, it was also found at Janes, Chihuahua, 
and elsewhere by Schott. 

Pectis prostrata, Cav.; Gray, PL Wright, 1, p. 83. New Mexico and Sonora; Wright, 
Thurber. 

Pectis anNEl-LA, DO. Prodr. 5, p. 99. Bio Colet-o, Texa?, Thurber. It was gathered by 
Berlandier at Laredo, and between the Eio Grande and the Nueces, and is No. 599, 985, 2009, 
and 2415 of the American distribution,* 

IsocARPHA OPPoaiTiFOLiA, B. Br.; DO. Prodr. 5, p. 107. On the lower Eio Grande ; Schoti, 
etc. A congener of Duuantia, DO., as Mr. Beutham has shown, (in Boi. Voy. Sulphur.) He 
has indicated the practical difficulties in the nomenclature of the two genera, 

Trichocohonis eivdlaeis, Gray, PL Fendl p. 56. Piedra Pinta Creek, Texas, Wright, Parry. 

Stevia canescens, Benth. PL Hnriw. p. 19 (an S. B. K?) Gray, PL Wright, 1,p. 71. A 
smoothish form, gathered both in New Mexico and Santa Cruz, Sonora, by WrigU & Thurber. 

Stevia salicifolia, Cav. Ic. t. 354. ; Lower Eio Grande ; Parry. Pappus ^either l-2-ari8tate, o 
else short and awnless, where it apparently passes into S, angustifolia, H. B. K. 

Stevia micrantha, Lag. Nov. Gen. d Sp. p. 27. 8. macella. Gray, PL Wright, 2, p. 70. Cohre 
(Copper Mines,) New Mexico ; WrighL This being the same as a plant collected by Schaffner 
on Chepultepec, and kindly communicated to me by Dr. Schultz, the distinguished investigator 
of CompositjB, under the name of S. micrantha, I do not hesitate to restore that name, although 
the specimens do not altogether accord with Lagasca's brief character. f 



I, DC. I. c. (between Tiintoyuca. and Tampico, 73a, 2153 ; San FernanJo, Cohahuila, 1537, 3037, 
Berlandier.) his not yei beon rc-diacovered. Tlie eeWe of the pappus, both of the disk and ray, vary from threo to six. 
f In the portion of the collections of Berlandier, until now undistributed, occurs the following : 

Stevia Berlahdiebi (sp nov.): ftuticosa, fere glabra; foliis oppositis ovatis oboratiwe obtuais in pctiolum loiigum contractia 
basi tiiplinerviia crenalo-BubBerratis craasiusoulis, sunimia parvls spatlmlatis integerrimia ; corjmbo polycephalo pedunculate; 
capitulia brevissinie pedicellatis capitato-congeetia ; involueri squainis atoraiferia subacutia ; aoheniis gLborrimis ; pappo 
eiarietato e aqiiamia truneatis lacetis coroniforrai-subooncrttia. 

In the mountains near San Carlos, Tamaulipas; Berlandier, No. 3160. Mountaina near SaltiUoi Gregs, No. 234. Suffruticoae 
a foot or two high, leaves half an meh to an inch long, with a peliolo of li-6 linoa in length, s-nooth and glabrous, nearly 
voinless except the triplo ribs at the base. Heads 3| or 4 linos long, including the fleah-colored or whitiab corolla. 
10 



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74 UNITED STATES AND MEXICAN BOUNDARY. 

Caephochaete Bigelovii, Gray, PI. Wright, 1, p. S9, 2, p. 71. New Mexico to Santo 
Cruz, Sonora ; Bigelow, Wright, Parry. Sierra San Iiuis ; E. K. Smith. 

Caemikatia tbnuifloea, DG. Prodr. 7, p. 2G7 ; Deless. Ic. 8d. 4, t. 99 ; Gray, I. c. Copper 
Mines to Western Sonora. 

Ktihnia eupatoeioides, Linn. Narrow leaved forms, mostly var. gracd-lima, which abounds 
in New Mexico and Sonora, extends i'ar into Mexico, and perhaps is K, rosmarinifolia. 

LiATRis ptjhctata, Hooh. Fl. Bor.-Am. 1, p. 306, t. 105. L. mucronata, J)0. Mountains of 
the Limpia, and Salveto Creek, Texas ; Bigelow, Parry. 

Oaepuephoeus juncevs, Beitth. Bot. Sulph., p. 21. Diluvial hanks of the Colorado of the 
West, ill dry and sandy heds of ravines ; Schott. 

PEUCEPHYLLUM, Nov. Gen. Eupatoriacearum. 

Capitulum pluri-(10-16)-florum. |Involucruni circiter 12-phylluni, disco brevius, laxnm ; 
phyllis vix biseriatis lineari-subulatis, inferne carinato-concavis margine tenuiter scariosis, 
superne foliiformihua. Receptaculum planum nudum. Corollas longe cylindriose, fauce nou 
amplial^, 5-de»tatjB, dentibus ovatis patentibua. Styli rami lineares, plano-convexi, obtusissimi, 
prorsus minutim glandulosi. Achenia haud raatara subturbinata, teretia, hirsutissima. Pappus 
capillavis, setis rigidulis pluriserialibus valde inaequalibus denticulatis, longioribus corollam 
subaequantihus. Fruticulus ramosus, glanduloso-viscidulus ; ramis monocophalis usque ad 
apicem foliosis; foliis acerosis punctatis alternis; floribus lutescentibus. 

PEUCEPHTLLnM ScnOTTii. — Diluvial hanks of tho Colorado, in Sonora ; February ; Schott. 
Stems a span high, loosely branched. Leaves crowded, an inch or less in length, filiform, 
obtuse, glabrous, but glandular when young and more or less glutinous, strongly glandular- 
punctate. Head cylindraceous, half an inch long. Scales of the inrolucre obscurely one-nerved, 
the alternate and exterior ones rather smaller than the others. Corolla glandular at the summit. 
I know of no published genus to which this manifestly Bupatoriaceoua plant is particularly 
allied. The name alludes to the acerose, fir-like foliage. 

Brickbllia oliqantues. Gray, PI. Wright, 1, p. 84, & 2, p. 71. Santa Cruz, Sonora ; Wright, 
Thurher. 

BEiCKEa-LiA VBEONicsEOLiA, Gray, I. c. Sonora; Schott; the habitat not recorded. This is an 
abundant species in Northern Mexico. It is distributed under eight different numbers in Ber- 
landier's collection. 

Brickellia laciniata, Gray, Fl. Wright, 1, p. 87. Bachimba ; Thurher. Organ mountains ; 
Bigelow. On the Rio Grande; Parry. Dr. Schultz, in Seemann's Botany of the Herald, p. 
301, has applied to this species the name of B. dentata, Schultz, mss., supposing it to be De Can- 
dolle's Clavigera dentata, having overlooked my statement, in PI. Wright, 1, p. 83, that the 
plant of De CandoUe is B. Kiddellii, and that the present species was not deseribed in De Can- 
doile's Prodomus. It is 1365 and 1783 of Berlandier's collection, 

Beickellia simplex, Gray, PI. Wright, 2 p. 73. Babocomori to Santa Cruz, Sonora. At 
Bufotillo Ranch, Dr, Bigelow gathered specimens of a Brickellia with the foliage of B. simplex, 
and with a similar involucre, but the heads are small and more numerous. 

Beickellia Wislizesi, Gray, PI. Fendl. p. 64, & PI. Wright, I. c; Santa Cruz; Sonora; 
Bigelow, Wright, dc. 



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BOTANY. 75 

Brickellia BETONICJ5F0LIA, Gray, PI. Wright, 2, p. 72. Cobre, etc.. New Mexico ; Wright, 
liigchiv ; var, hl'milis. Between Babocomori and Santa Cniz, Sonora; Thurber, Wright. 

Brickellia ciundracea, Gray, PI. Lindli. 2, ^. 218, & PI. Wright, I. c. Western Texas, 
tlie Rio Grande near Eagle Pass, etc, ; Btgelow, Parry. 

Brickellia Eidcellii, Gray, I. c. Southern and western Texas, where it abounds. 

Brickellia "Wrightii, Gray, PL Wright, 2, p. 72. Cobre, etc., New Mexico; Wright. 
Santa Cruz, Sonora ; Thurber. 

Brickellia tbbbra, Gray, I. c. Near Santa Cruz, Sonora, in a mountain ravine ; Wright. 

Brickellia PLOBIBUNDA, Gray, I.e. With the last, and alao on the San Pedro, Sonora; Wright. 

Brickellia eeniformis. Gray, PI. Wright, 1, p. 86. Punto de Peysano ; Bigelow. 

Brickellia baccharidba. Gray, I. c. Cobre, New Mexico ; Bigelow. 

Brickellia grandieloba, Nutt. ; Torr. d Gray, Fl. I. c. Cobre, New Mexico ; Bigelow, 



EuPATOEiuM Pareyi (sp, nov) : gland iiloso-hirsutnm, raraosum ; Ibliis alterais nunc oppo- 
sitis cordatis acutis grosse inciso-crenatis membranaceis aubtriplinerviis venosiii ; petiolo elongate 
raarginato ; corymbis circiter 5-cepbalis ; pedunculis gracilibus ; capitulis circiter 20-floris cylin- 
draceis, squamis imbricatis triseriatis lanceolatis striatis aristato-acuminatie extus pubescenti- 
bu8 ; acheniia ad anguloa hirtellis,— Sierra de Carmel, near the Kio Grande, Chihuahua ■ 
October ; Parry. Branches of an herbaceous species, apparently of a diffuse habit, which has 
the involucre and habit of a Brickellia (but the achenia are pentangular without intermediate 
Btria3,) or of an Ooclinium, but the receptacle is flat. Leaves about an inch in length and 
breadth, deltoid-cordate, beset with a sparse and short pubescense or glabrate. Petioles 6 to 8 
lines long, with narrow decurrent margins, hirsute with glandular or viscid hairs, like the 
stem, peduncles, etc. Peduncles minutely bracteolate. Heads half an inch long. Scales of 
the involucre green, lucid, appressed, strongly striate, tapering, especially the inner ones, into 
a slender short awn. Mowers apparently ochroleucous. Achenia 2 lines long, with a con- 
spicuous basilar callus, slender. Pappus white, scabrous. 

EupATORiUM Bigelovii (sp. nov) : cinereo-pubescens, ramosum ; foliis oppositis ovato- 
lanceolatis acutis integerrimis breviter petiolatis a basi rotandata tri-quinquenervatis supra 
glabratis subtus tomentosis; capitulis ternis quinisve ad apicem rainulosum brevi-pedicellatis 
20-30-floris ; involucre turbinate cinereo-tomentoso ; squamis pluriseriatim imbricatis striatis 
acutis, extevioribus ovatis oblongisve, interioribus lanceolatis sen linearibus purpurascentibus ■ 
acheniis secus angulos scabridis, — On the Gila, Sonora; Parry. Apparently an upright herba- 
ceous plant, also with much the aspect of a Brickellia, but with the characters of Eupatorium. 
Leaves 2 or 3 inches long, thin, the larger an inch or more in width near the base, thence 
tapering to an acute point. Petioles 3 lines long. Heads half an inch long, Scales of the 
turbinate and tomentose involucre rather loosely imbricated in 5 or 6 series, the exterior 
successively shorter and broader, Elowers purplish. Pappus tinged with purple or browuish, 
Achenia a line and a half long.* 



le Dame wliioh must apparently Ijc boiiie by BulboBtylis spinaciiefolia, DC. Frodt. 5, p. 
139, einco it has pentagonal achenia and is a true Eiipatoiium. The species ie founded on Berlandier'a Kos. 761 and 2184 
(Amer. distrib.) My epocimenE have only upper leaves, few of wiJch are much hastate. 



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76 UNITED STATES AND MEXICAN BOUNDARY. 

EuPATOmuM SciiiEDEAHUM, ScJirod. ; DC. Prodr, 5, p. 159. (E. multinerve, Benih. E. 
Schiedeanoides, ISchuUz, Bip.:) var. grosse-dentatum. E, Sonorae, Gray, PI. Wright, 2, p. T4. 
Mountain ravine near Banta Cruz, Sonora ; Wright. Lower Eio Grande, Texas, near Einggold's 
Barracks, etc.; Scholt. The latter is a more diffuse and loosely flowered form, approaching E. 
paniculatum, Schrad., in the inflorescence, but not in the leaves. The form with dense corymbs 
which comes from southern Mexico, Costa Eica, etc., Dr. Schultz has ascertained to be Lessing's 
E. pycnocephaium, a name not very appropriate for our forms nor for tbe specimens ot Berlandier. 
The plant of the Kio Grande is said by Mr. Scliott to exhale a moschate odor. 

EupAxOEiUM Bbrlandieri, DG. Prodr. 5, p. 16T. E, ageratifolium ^? M^xieanum, DC, 
^. c. p. 173. E. ageratifolium, var. Texense and var, herbaceum, Gray Fl. Lindh. & PI. 
Wright. Various forms from southern Texas to the mountains near Santa Cruz, Sonora, (the 
nearly herbaceous state.) In Berlandier's reliqmcB distributed by me, this occurs under the 
numbers 762 and 2182, (between Victoria and Tula,) and 756, 2176, (between Tula and 
Tampico ;) also from San Carlos, Tamaulipas, 3164. These all belong to one specits, and the 
difference in the length of the pappus remarked by De Candollo is inconstant. The name of E. 
Berlandieri had best be retained for the species, at least until it ia identified with the Cuban 
species. 

EupATOHiuM Wrightii, Gray, FL Wright, 2, p. 87. New Mexico ; Wright. 

EuPATORiUM soLiDAeiKiFOLluM, Gray, I. e. New Mexico ; Wright, &c. 

EuPAToEiUM SBROTINUM, Michx. Sau Pedro river, western Texas ; Bigelow. 

EupATOBiuM coNTzoiDES, VaU. Symh. 3, p. 96, Lower Eio Grande ; Schott. Rocky ravines, 
near Santa Eosa ; Bigelow. Mr. Trecul gathered this at the mouths of the Mississippi, De 
Candolle's Mexican stations are from Berlandier's collections, in which it occurs under numbers 
1384, 2210, 2355, etc. The original colored drawing (in my possession) for the plate in Schrank's 
Fl. Bar. Hort. Monac, i. 85, represents the flowers as white or whitish.* 

CoNocLiJJiuM ctELESTiNUM, DC. Prodr. 5, p. 135. Eio Grande, near Laredo, Schott. 

CoNOOLiNiUM BETomcUM, DC. I. c. Lower Eio Grande, Schott. A nearly glabrous form, with 
hastate-oblong and very obtuse leaves. Also a remarkable and doubtful form, with thin, gla- 
brous, and entire ovate leaves from near the mouth of the Pecos. Perhaps the species, which 
seems to be polymorphous, likewise includes C. Hartwegi, Walp., the Eupatorium Hartwegi, 
Benth. PL Hartw. 

CoKOCLiiiiUM DissECTUM, Gray, FL Wright, 1, p. 88. From the lower Eio Grande to the 
borders of Sonora; found by all the collectors. It ia singular that this does not occur in 
Berlandier's collection. 

MiKAKiA sCASBBKS, lAnn. Southern Texas, Schott. &c, 

CoRETHROGYNE INCANA, Nutt. (excl. syn.) San Diego, California ; on hills ; Parry. Probably 
this is no more than a state of C. Californica, without chaff on the receptacle, 

CoRETHROGYNE EiLAGiNiFOLiA, Nutt. ; TorT. & Gray, Fl. 2, p. 98, There is a great deal of 
confusion in the description and synonymy of this and C. tomentella in the Flora of North 



OEUPATOBIUMAEUIIEIFM, iW. Z. c.y. 168, No. 1380 of Borlandiei's colletion, was also gathered by Dr. Gregg at Monterey, 
in better epeeimeos. The heads aie 30-40-flowered ; tte corolla purplish, according to Gregg ; and the leaves are 
broadly deltoid. The species is allied to E. deltoideum, but the leaves are not hastate, the heads are shorter and smaller, 
the iiivoluyce more biseriatc, its outermost scales broader, and the aohenia nearly glabrous. 



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BOTANY. 77 

America and elsewhere, which it is now hardly worth while to clear up in detail, since it is 
evident that the two really belong to one polymorphous species, which includes Beiitham's C. 
virgata and C. obovata also. The plant has a persistent base, and blossoms at various seasons; 
the wool is either permanent or deciduous, etc. Should my conjecture about 0. incana prove 
true, the known forms of the genus may he reduced to two species, 0. Californica and 0. filagi- 
ni folia. 

Macujerahthbra canescens, Gray, PI. Wright. 1, p. 89, &c. Along the boundary every- 
where, from the upper part of the Rio Gi-rande to the Gila, &c, 

Machjeranthbea tahacbtifolia, Nees. Ast. p. 224 ; Gray, I. c. From the Pecos to Sonora, 
etc. ; in various forms. 

Mach^ranthera parviflora. Gray, I. e. Plains and mountains, southern borders of New 
Mexico and adjacent parts of Sonora ; also on the Gila ; Bigelow, Parry, Wright, Thurher. 

PsiLAcns ASTRROiDES, Gray, PI. Fendl. p. 72. Along the Eio Grande, from Presidio to El 
Paeo, etc., and in Sonora. 

Aster multiplorus, Ait. Common from the lower Rio Grande to the Gila, etc. A. hebecladus 
and A. scoparius, 1>C., are founded on exactly the same thing in Berlandier's collections. 

Aster SIMPLEX, WiUd. Sonora; Wright. On the Mimbres, New Mexico ; Bigelow. 

Aster CAiiNaus, Nees. A. ccerulescens, DO. Prodr. 5, p. 235. Western Texas ; Thurber 
On the Pecos ; Bigelow. 

Abter puniceus, Linn.; var. vimineds, Torr. d Gray. Mimbres ; Biyehw. Sierra dc los Ani- 
mos ; Wright. 

Aster lohoifolius, Lam. On the Mimbres ; Wright. 

Aster Novi-BELCin:, Linn. Also on the Mimbres, etc.; Wright, Bigelow. 

Aster spinosus, Benth. PI. Hartw. p. 20. Along the Eio Grande, below El Paso, to its 
mouth. 

Aster divaricatds, Nutt, From the lower Eio Grande to Sonora. 

ASTBB ANGUSXDS, Torr. dt Gray, I. c. Sand bars of the Eio Grande, below Dona Ana ; Wright, 
Bigelow. Probably brought down the river from the Rocky mountains. 

Aster pauctflorus, Nutt.; Gray, PL Wright, 2, p. 76. Suhsaline soil, west of the Ohiricahui 
mountains and Santa Cruz, Sonora ; Wright. 

Aster blepuarophyllus, Gratj, PI. Wright, I. c. Subsaline soil, Los Playos Springs, New 
Mexico; Wright. 

Aster Sohoe^, Gray, PI. Wright, I. c. In the same region as the last two species. 

Aster Chilensis, Nees.; var. ;5. Torr. & Gray, Fl. 2, p. 112. A. Durandi, Nutt. in herb. Cali- 
fornia ; Bev. Mr. Fitch. 

Eekerok (Ccbnotus) Canadense, Linn. On the Gila ; Thurher; and doubtless almost every- 
where. 

Erigeron (CaiNOTUE) EBiopiiYLLUM, Gray, PI. Wright, 2, p. 77. On the Sonoita, Soaora; 
Wright. 

Erigeron macranthum, Nutt.; Gray, PI. Findl. p. 67, etc. Cohre, New Mexico; Wright, 
Bigelow. 

Erigeron divergens, Torr. & Gray, Fl. 2, p. 175; Gray, PI. Wright, 2, p. 77 ; var. cinereum. 
"W. Texas to the Gila (Thurher) and Tucson, Sonora; Schott. 



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78 UNITED STATES AHD MEXICAS BOirNDAEY. 

Erigekon Bellidiastkl'm, Nutt.; Gray, I. c. New Mexico ; Wright. 

Erioeron (CffiKOTUs) scEDECUEBEiss? Coajm HuMeciirrens, Gray, PI. Fendl. p. 78, & PI. Wrigli, 
l,p. 172, W, Texas (on the Pecos) to the Gila and Sonora ; Tkurber. San Luis Eey, Califor- 
nia ; Parry. It is very doubtful if this be De CandoUe's plant, of which I found no specimens 
in the reliquice of Berlandier's collection. 

Ebigbhon glauoum, Ker.; Torr. d Gray, Fl. I. c. Monterey, California ; Parry, etc, 

Eriseron Douglask, Torr. dc Gray, I, c; var. foliis angustissimis fere flliformibus. Moun- 
tains near San Diego, California ; Parry, Thurber, Schott. 

Erigeron (Poltactidium) delphinieolium, Willcl.; Gray, PI. Wright, I. c. Cobre, New Mexico, 
&c.; Wright, Bigelow, Thurher, (a eanescently hirsute variety.) 

Eki&bbon modestum. Gray, I. c. Live Oak creek, Texas ; Wright. 

Ekigeron BiGELOvii (sp, nov,); cinero-hispidum ; caulibus (6-8-pollicaribus) c basi lignescente 
ramosis adscendentibua, ramulia monocepbalia ; foliis linearibus spathnlato-ianceolatis acutatis, 
inferioribus spathulatia integerrimis in petiolum attenuatis ; involucro eiibtriseriali, squamis 
lineari-lanceolatis acuminatis margine scariosia dorso subglandulosis parcissime hiapidis, exte- 
rioribus brevioribua ; ligulis 40-50 nniserialibus purpureis ; acheniis hiapidia ; pappo e setis 
hispidulis 15-16 corollam disci subajcLuantibus et totideni squamellato-aetaceis subtriplo brevi- 
oribua. Near Fronteras, New Mexico, March, April ; Bigelov). Also collected by Mr, Wright, 
but in too few apecimens for diatribution. The species should rank next to B. modestum ; but 
its heads are nearly twice as large; the rays (3 lines long) purple, more imbricated; the involucre 
scarcely hispid, and the pappus loss fragile ; the exterior series longer. It is one of the species 
intermediate between Erigeron (Pseuderigeron) and Diplopappus. 

BiPLOPAPPUS ericoides, Torr. & Gray, Fl. 2,^. 182 ; var. hietella, Gray, PI. Fendl. p. 69. 
Eocky places throughout New Mexico and adjacent districts. 

Di&TAsis MODESTA, DC. Prodr. 5, p. 279. High plateaus on the Eio Grande^ Pecos, etc. On 
Mt. Carmel Dr. Parry gathered a glabrate autumnal form, with longer and rigid branches, 
which is somewhat peculiar. 

TowNSENDiA STRiGOSA, Nutt. ; Torr. & Gray, Fl. I. e. El Paso, and adjacent parts of 
Chihuahua. 

TowNSBNDiA (Meqalastrum) Wrigh'tii ; suffrutescens, viacoso-puberula ; ramis adscendentibus 
(subpedalibus) apice nudis ; foliis spathulatia integerrimis setigero-apiculatis inferne in petiolum 
marginatum attenuatis ; involucri biserialie squamis ovato-lanceolatia longe caudato-acuminatis 
Bubmarginatis extus glanduloao-puberulis ; ligulis magnis ; pappo in radio et disco conformi 
multisetoao. — Aater? (Megalastrum) Wrightii, Gray, PI. Wright, 2, p. 75. Stony hills on 
the Eio Grande, 60 or 70 milea below El Paso ; Wright. Mouth of the great canon of the 
Eio Grande ; Bigelow. This striking plant is clearly only an extreme form of Townsendia, 
with the pappus more copious and finer than usual. 

Eeemiastrum bellioides, Tm-r. <& Gray, PI. Thurher, p. 320 ; dt in Pad/. R. lioad Expl. 6, p. 
361, t. 6. On the desert of the Colorado of the "West ; Thurher. Fort Yuma, etc.; Schott. 
The specimens all too young. 

Kkbrlia BELLiDiFOtiA, (Jj-aj/ ȣ Fngeliu. PI. Lindh. 2, p. 220. On the Nueces and Blanco; 
Wright, Parry. 

Aphakostephus ramosissimus, DC; Gray, PL Wright, I. c. On the Naeces, Eio Grande, etc. 



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BOTANY. 79 

Thia variea greatly in foliage, etc. The following are some of the mimters under which it is 
distributed in Berlandier's collection : 2061, 17S7, 1074, 2504, 3168, 1888, 1077, 2507. 

Bellis intgdrifolia, Michx. Low places on the Pecos, Limpio, etc.; THgelow, Wright. The 
minute hairs on the achenium are glochidiafe. 

G-YMNOSPBRMA C0RYMB03UM, DO. Prodr. 5, p. 312. Along the Eio Gfrande. All three of De 
Candolle's Mexican species must he reduced to one. 

GuTiEEEERiA 'WRmnTii, Gm?/, P;, Wright, 2, p. 1^. Between Bahocomori and Santa Cruz, 
Sonora ; WrigU. Cohre ; New Mexico, Bigelotv. 

GuTiERRBZiA GYMNosPERMOiDES, Gray, I. c. Low tanks of the San Pedro, Sonora ; Wright. 
Santa Maria, Chihuahua, Tkurher. — Lower leaves often pinnatifid. 

GcTiERREZiA EPH^ROCEPHALA, Gray, PI. Feudl. p. 73, (& PL Wright, I. c. From Indianola, 
Texas, to Cohre, New Mexico, and Chihuahua. 

GuTiERREztA BRiooAEPA, Gray, PI. Wright, l,p. 94. Along the Eio Grande, Often con- 
founded with G. aphferocephala, and probably not really different. 

GuTlERREzrA MiOROCEPHALA, Grai/, I. c, Oommon on the frontiers, and in Texas near the coast. 

Gdtierrezia EuTHAMiffl, Torr. & Gray, Fl. 2, p, 123. Common in New Mexico, on the Rio 
Grande helow El Paao, and in the northern parts of Chihuahua and Sonora. G. divaricata ia 
only a loosely flowered variety of this, to which many of our specimens would he referred. 

Gutiereezia Texana, Torr. & Gray, I. c. Common in the middle district of Texas. 

SoLiDAGO angusta, Torr. (& Gray, I. c. Eastern Texas ; Thurber. 

SoLmAQO NEMOEALIS, Ait.; var. mollis. S. mollis, Bar&ing ; Gray, PI. Wright, 2, p. 79. S. 
incana, Torr. d Gray, Fl. 2, p. 221. New Mexico and western Texas, in various places ; Thur- 
ber, Bigelmv, Wright, Parry. Tire plant runs into S. nemoralia, and muat he appended to that 
widely distributed species. 

SoLiDAQO Eadula, Nutt. Southern Texas ; Parry. Includes S. rotundifolia, DC. and S. 
Bcaberrima, Torr. dt Gray. ' 

SoLiDAGo occiDENTALis, Nutt. in Torr. <t Gray, I. c. Common on the banks of the Mimbres, 
New Mexico ; Wright, Bigdow. San Luis Key, California ; Parry. 

SoLiDAGo PETiOLARis, Ait.; ToTf. & Gray, I. o. Cobre, New Mexico, etc, 

SoLiDAGO ELONGATA, Nutt.; ToTT. <& Gray, I. c. California ; Schott. New Mexico ; Bigelow. 

SoLiDAGO Califorhica, Nuti.; Torr. d Gray, I. c. Mountains east of San Diego ; Parry, etc. 
Mr. Thurber gathered a Solidago, which may be a variety of this, in Chihuahua. 

SoLiDAOO Canadensis, Linn. var. procera, Torr. & Gray, Fl. Cohre, etc.. New Mexico; 
Bigeloio. 

LiNOSYRis AEBORESCENS, (sp. nov.) : glabra, viscidula ; caule 10-pedali lignosa ; ramis apiee 
corymboso-polycephalis ; foliis anguste linearibus acutis, ramulorum subulatis ; involucro 
pauciseriali disco breviore 20~25-fl.oro, squamis lanceolatis acutis carinatis margine scarioso- 
ciliolatis ; appendicihua styli lanceolato-subulatis portionem 8tigmatiferum a3ijuantibus ; 
acheniis brevibus turgidis pubescentibus. — California ; Eev. Mr. Fitch. The flowering branch- 
lete in Mr. Fitch's collection are stated to belong to " a tree 10 feet high." They are slender 
and very leafy; the leaves are one or two inches in length, about a line wide, much like those 
of L. vulgaris, only a little viscid. Corymb crowded. Heads three lines long ; the flowers 
all tubular, but occasionally a marginal one shows a tendency to become irregular, and to have 
its anthers abortive. Receptacle alveolate and toothed. Achenia all fertile, short-ohlong, 



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80 UNITED STATES AND MEXICAJf BOUNDARY. 

turgid, not compressed. This is surely a congener of L. vulgaria, and no less so, perliaps, of 
Ericameria reainosa, Nutt., the ligules of which are often imperfect. In two directions, apecies 
which I cannot separate from Linosyris make too close an approach to Aplopappus,— (F!(7e PI. 
Wright, 1, p. 96, & 2, p. 81.) 

Linosyris (CirRYSOrnAMNUS) viscidiflora, Torr. <£ Gray; var, paniculata. California ; Schott. 
The locality not recorded. This, with a Californian specimen gathered on the Sacramento in 
Wilkes' Exploring Expedition, perhaps holongs to an undescribed species ; but the distinctions 
between it and L. viscidiflora, (a bad name,) on the one hand, and Ericameria resinosa, Nutt., 
on the other, are not clear. Better specimens of these plants are needed for illustration. 

LisosYRis GRAVBOLERS, Torr. <& Gray, I. e. Cobre, New Mexico ; Bigelow. Sierra de los 
Animos ; Wright. 

LiNOSTBIS PuiCHBLLA, Gray, PI. Wright, 1 , p. 96, d- 2, p. 80. Sandy banks of the Ilio Grande, 
New Mexico ; Wright, Bigelow. Sand hills. Chihuahua ; October ; Thurber. 

LiHosYEis Wrightii, Gray, PI. Wright, 1, p. 95, cfe 2, p. 80. Along the Eio Grande, New 
Mexico, etc, ; Wright, Bigelow. As already remarked, some forms appear to connect L. hirtella 
with this species. 

Linosyris coronopifolia, Gray, PI. Wright, 1, p. 96. Lower Eio Grande to Eagle Pass, Los 
Mores, etc. ; Schott, Parry, Bigelmo. 

Linosyris? caenosa, Gray, PI. Wright, 2, p. 80. Subsaline soil west of the Chiricahui 
mountains ; Wright. Gathered by Mr. Wright ; the affinities of the plant still doubtful. 

Linosyris (Aplodiscus) Drummosdii, Torr. <fc Gray, Fl. 2, p. 233, Prairies between Indianola 
and San Antonio, Texas ; Parry. On the lower Kio Grande ; Schott. 

Linosyris (Aplodiscus) Mexicana, ScMeccht. Sort. Sal. p. 7, t. i. Aplopappus (Aplodiscus) 
discoideus, DC. Lower Rio Grande ? Schott, who also gathered a var, 'iombntosa : pube laxa 
decidua lanata. The particular locality not recorded. 

Linosyris (Aplodiscus) Mbnziesii, Gray, PI. Wright, 1, p. 21. Aplopappus Menaiesii, Torr. 
& Gray. San Luis Bey, San Diego, Carisso creek, &c. ; Parry, Schott, &c. . Common in dry 
places, growing in bunches. Dr. Hulse gathered in the valley of the Sacramento a scabrous 
variety of this, with the lower leaves large and obovate. 

Aplopappus (Esicameria) ericoides, Sook. <& Am. Bot. Beech, p. 146. California ; Schott. 

Aplopappus (Ericameria) laricieouus, Gray, PI. Wright, 2, p. 80. Guadalupe Pass, New 
Mexico ; Wright. Organ mountains ; Bigelow. 

Aplopappus phyllocephalus, DO. Prodr. 5, p. 347. A. rnbiginosus, Torr. & Gray, I. c. 
Lower Rio Grande ; Schott. The tjpecies was founded ou Berlandier's No. 2278, which is a 
state of the species named A. rnbiginosus in the Flora of North America, but just beginning 
to blossom, and with nearly sessile heads. 

Aplopappus spihulosus, DO. I. e. Everywhere common along streams, from Texas to Sonera, 

Aplopappus gracilis. Gray, PI. Fendl. p. 76. Common through New Mexico and Sonora in 
eandy places. 

Aplopappus (Prionopsis) ciliatus, DC. Prodr. 5, p. 346. Plains and alluvial banks of rivers, 
western and southern Texas ; Bigelow, Schott. 

Santhisma Tbxasum, DC. Prodr. 5, p. 94 ; var, Berlandieei, Gray, PI. Wright, 1, p. 98. 
On the lower Rio Grande ; Schott. This is the form, with very obtuse involucral scales, on 
which the genus was founded, viz : Berlandier's No. 2039, misprinted 2639, gathered near 



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Medina. Some of the specimGns afterwards collected by Beilandier (distributed as Nos. 2562 
and 2573) connect tins with the variety Drummondii, (Centauridium Diumniondii, Torr. & 
Gray,) which has acute or cuspidate involucral scales. 

GitiNDELiA SQUAEROSA, Dunol.; var. gsandiplora, Grmj, PI. iVrlght, 1, p. 98, etc. On the 
Manzaoal, Texaa, etc. It is No. 1921 of Berlandier's collection. 

Grindhlia lanceolata, NuU.; Torr. <& Gray, L c. Cobre, New Mexico ; Thurher, P.igdow. 
Probably a mere variety of G. sijuarroaa. 

Grindelia arguta, Sckrader, in. DO. I. c. Cobre canon ; WrigU, Thurber. Probably t!iis is 
liliewise G. squarrcsa. 

Gbindblta inuloides, Willd.; var. microcephala. G. microcephala, DG. Prodr. Southern 
and western Texas; Schott, Parry. This is the same as Berlandier's plant, (No. 2057,) on 
which De Candolle founded his G. microcephala. The achenia are of the same shape as in G. 
inuloides ; but their thick walls are generally smooth and even, yet some of them show traces 
of the corky-rugose character of those of genuine G. inuloides. 

Pehtachaeta aurba, NuU. in Trans. Amer. Phil. Soc. 7, p. 336; Torr. d Gray, Fl. 2, p. 249, 
Var. /?. capitulis majoribus multiradiatis.— San Luis Key ; February. Var. j-. capitulis multo 
minoribus ; involucri sijaamis plerumque obtusis ; ligulis 7-10.— Cordilleras, near San Felipe, 
California, on the eastern slope ; June. The first variety is a strong vernal form, with larger 
heads than in my specimens from Nuttall, yet agreeing very well with his description. The 
second is a later, much branched state, I believe, of the same species, although the heads are 
only one-third as large, the rays and the involucral scales proportionally fewer, and the latter 
either obtuse or retuse, or merely mucronate. The pappus of this occasionally consists of 6 or 
8 bristles. The comparison of both forms with Nuttall's original specimens shows that they all 
belong to one species. 

Beadbtjhia hirtella, Torr. tfi Gray, Fl. 2, p. 250. Eagle Pass, etc., on the Rio Grande, 
Texas ; Schott. 

Heibrotheca scabra, bo.; Torr. <& Gray, I. c. San Antonio to Presidio del Norte, etc.; 
BigeJow, Schott, Parry. Very tall specimens were gathered at Presidio by Dr. Bigelow, 
growing four feet high, 

Heterotheca plorieunda, Benlh. Bot. Voy. Sulph. p. 24. San Luis Rey, California; October; 
Parry. This is certainly Bentham's H. floribunda, and is the same as No. 275 of Coulter's 
California collection, although the Heads are somewhat larger. I fear it passes into H. grandi- 
flora, Nutt. 

Chrysopsis canescens, Torr. <£• Gray, Fl. 2, p. 256. On the Cibolo, Salado, and Limpio, 
Texas ; Bigelow, Schott. 

\ viLLOSA, Nutt. San Eataban, New Mexico ; Bigelow. 

i foliosa, Nutt. New Mexico, northern Sonora, etc. This and 0. hispida vary 
greatly in appearance, and are probably to be reduced to C. villosa. 

Chrysopsis nrspiDA, Hook. Clefts of rocks between the San Pedro and Pecos ; Bigelow. 

Chrysopsis pilosa, NuU. On the Rio Grande near Coleto creek ; Schott. 

Laphamia halimifolia. Gray, PI. Wright, 1, p. 100, t. 9. Hills of the San Pedro ; Wright, 
Bigelmo. 

Laphamia axgustifolia. Gray, I. c. High rocky hills of the Pecos, in crevices of the lime- 
stone, and mountains near Live Oak creek ; Bigdotv, Wright. Also between San Pedro and 
the Puercos ; Schott. 

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S"! UNITED STATES A>)D MEXICAN BOUNDARY. 

Laphamia angustifolia? var. LACiNiATA : caulibus elongatis diffiisis ; foliis oblongia subcuneatis 
laciniato-lobatie. — Crevices of rocks along the Eio GJ-rande, Texas ; October ; Bigeloio, Schoft. 
This is doubtless an autumnal state either of L. angustifolia or of L. halimifolia, with weak 
stems prolonged to the length of a foot. From the foliage it might as well be judged to be a 
state of the latter, but the rajless heads and flowers are those of the former. It seems to indi- 
cate that the two species may not really be distinct, 

LAniAMiA BISEIOSA, Torr. in PI. Wright, 2, p. 106. Limestone rocks below Mount Carmel, 
on the Rio Grande ; October ; Parry. Heads as large as in L. rupestris. 

Lawiamia dissecta, Torr. in PI. Wright, 2, p. 81. Crevices of limesione, cailon of San 
Carlos, and near Presidio del Norte, on the Eio Grrande ; Parry, Bigelotv. 

Lapiiamia (PAPPOTUKix) RUPiSTRis, Gray, PI. Wriijht, 1, p. 99, i. 9. Crevices in basaltic 
rocks on the Limpio ; also San Estaban, Florence mountains, Escondido crcbk, etc. ; Wright, 
Sigelow, Parry, 

Laphamia (Pappotiihix) ciherea (sp. iiov.) : nana, lanoso-toraentulosa ; caulibus subdif- 
fnsis usque ad apicem foliosis ; foliis oppositis rotundis subintegerrimis parvis, adultis subgla- 
bratis ; pedunculis folia paullo superantibus ; acheniis srepius 3-4-nervatis ; pappo rigidio tubo 
corollre vix longiore. — On rocks near Escondido creek ; September ; Bigeloio. This differs from 
the last, possibly not specifically, in its somewhat floccose woolly pubescence, which renders all 
the young parts canescent, its entire or very obscurely toothed leaves, its rather longer peduncles, 
the longer proper tube to the corolla, its proportionally shorter pappus of stouter and more rigid 
bristles ; and some of the achenia have four salient and unequally disposed ribs or nerves, but 
the greater number three, of which two are usually approximate at one margin. The leaves 
are from three to six lines in diameter, orbicular or broadly ovate, sometimes obscurely cordate, 
entire, or obsoletely repand-tootlied. 

Peeitylb corokopieolia, Gray, PI. Wright, 2, p. 82. Cobre, New Mexico; Bigelotu, 
Wright. Arroyo de los Nogales, Sonora ; Scliott. 

Peeityle Parryi, Gray, PI. Wright, 2, p. 106, In a canon of the Rio Grande below Mount 
Carmel ; Parry. 

Peeityle aglossa, Gray, I. c. With the preceding ; Parry. This is an annual, not suffru- 
tescent at the base, as stated in the published description ; and the larger leaves are often two 
inches wide, 

Peeityle nuba, Torr. Mss.; Gray in Torr. Bot. Whippl. Pep. p. 100, On the Gila, near 
the Pimo village ; Parry, The rays are plainly yellow. 

Peeityle Emoryi, {Torr, in Emory, Hep. N. 3Iex. 1848, p. 142) : ligulis ovalibus ; pappo 
uniaristato, adsta setiformi corolla brevlore interne nuda vol scabra, versus apicem parce retror- 
sum vel patentiasime barbellata-hispida. — On the desert of the Colorado of the West ; Emory, 
Schott, etc. Fort Yuma ; Major Thomas. This plant so closely resembles P. nuda in foliage, 
(although the leaves are not always so much cut,) pubescence, in the size of the heads and 
broad scales of the involucre, ia every respect, indeed, except in the awn to the pappus, (the 
squamellao of which are, perhaps, less united,) that it is far most probable the two are forms of 
one species. In this case the name of P. Emoryi, which was indicated and published in 1848, 
would, on all accounts, take precedence, and P. niida be held as a variety of it, P. pUimigtra 
18 distinguished by the smaller heads, narrower involucral scales, and longer upwardly barbel- 
late awn of the pappus. 



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EOT AH Y. 83 

Pericoms catoata, Gray, PI. Wright, 2, -p. 81. Cobre, New Mexico; WrigU, Bigdoiv. 
Hot Springs, east of the Mimbres ; Bigelow. 

BaccH-Ibis cffiRTJLESOEsa, DC. Prod,: 5, p. 402. From the lower EIo Grande to the Mimbres, 
and the Colorado of the West. 

BACCnARis c<ERULKSCENs, DO. Prodr. 5, p. 402. var, follis angustiorlbus. B. Pingrfea, 
Nutt. in Trans. Amer. Phil. Sac. T, p. Ml, non DC. San Luis Rey, California ; Parry. The 
fipeoimen accords with No. 305 of Wright's N. Mexican collection, and is, I doubt not, merely 
a narrow form of B. ccerulescens, DC. But it is Nuttall's B. Piiigrasa, which ia wrongly ad- 
duced as a pynonym of B. Douglasii in Torr <£• Gra>j, Fl. N. Am. 2, p. 259, the real B. 
Donglasii (^ No. 1776 PI. Uartw.) not being then known to the authors. 

Bacciiabis consakgdinea, DC. Prodr. 5, p. 408. San Diego? California; Schott. 

Bacchakis pilularis, do. I. c. San Luis Eey, California ; Parry. 

Baccharis salicina, Torr. & Gray, Fl. On the Bio Grande and Mimbres; TFrighi, 
Bigdoio, etc. 

Baccharis akgustifoeia, Michxf; Gray, PI. Lindh. 2, p. 224. Fort Inge, Texas, to the 
San Pedro valley, Sonora, etc, ; Sokoit, Bigelow, 

Baccharis Emoryi (ap. nov.) : suffruticosa, glabra, paniculato-ramosissima ; ramulis angu- 
lato-striatis ; foliis subapathulato-linearibus obtusis uninerviis iategerrimis (subpoliicaributi) 
deciduis vel raris, ramulinis minimis ; capitulis eolitaris geminisve in ramulos breves vel pedim- 
culos paniciilatos ; involucre fcemineo ol)ovato majusculo multiseriali pappo dimidio breviore ; 
eijuamis glabris appressis coriaceia obtusis, exterioribus ovatis, intimis linearibus ; acheniis gla- 
berri mis.— Very common on the Gila ; Emory, coll. in 1846, etc. Fort Tuma, E. California ; 
Major Thomas. Sterile plant not seen. Involucre of fertile flowers 3 or 4 lines long ; the thick 
scales cloaely appressed, and all the outer ones very obtuse, their very slight scarious margin 
not ciliate. Pappus half an inch long, whitish. 

Baccharis seegiloities (sp. nov.) : suffruticosa, glabra, confertim ramosissima ; ramis ramu- 
lisque angulatis rigidia articulatis ssepissime aphyllis ; foliis dum adsunt raris parvis spathu- 
latis uninerviis, ramulorum ad bracteas minimaa reductis ; capitulis parvls in ramulos conferfis 
subsessilibus, masculis magis glomeratis ; involucro obovato, squamis rauUiaeriatis appressis 
glabris oblongis, vel inteiioribus lanceolatis; fcem. acutia; masc. omnino obtusis; receptaculo 
conico subpaleaceo ; acheniis glabris ; pappo brevi.— Along the Gila or Colorado ; Emory, 1846. 
Dry arroyos, 50 miles west of the Colorado ; Bigdow. Southern part of California ; Dr. J. Le 
Conte. Apparently two or three feet high, and very bushy and broomlike ; the numerous heads 
only two, or, at most, three lines in diameter. 

Baccharis brachypuylla. Gray, PL Wrigid, 2, p. 83. Southern borders of New Mexico; 



Baccharis Wrightii, Gray, PI. Wrigid, \,p. 101. Western Texas to Chihuahua ; common. 

Baccharis ftarmicjefolia, DO. Prodr. 5, p. 419; Schulls, in Bot. Herald, p. 30:^. Hill sides 
between Babocomori and Santa Cruz, Sonora; Wrighl (1201). This is the same as Seemann's 
plant from the Sierra Madre, and, except in the smaller leaves and heads, accords very well 
with a specimen from the valley of Mexico, collected by Schaffner, and named B. ptar mica) folia 
by Dr. Scbultz. It accords still better, perhaps, with the charactei' of B. thesioides, to which 
De CandoUe's species and all these specimens are probably to be referred. 



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84 UNITED STATES AND MEXICAN UOUNDAKY. 

BACCHARia BiGBLOvii (sp. nov.): herbacea, glabra ; ramulis stria to-angulatis ; foliis siibviscosis 
oWongis lanceolatisve basi in petiolnm angugtatis grosse argute serratia, majoribua subincisis 
vel diiplicato-aerratie uninerviie obsolete Tenosis ; capitulis masculia et fcemineie laxe panicalato- 
corymboBis parvie (lineas 2 longis) breviter pedicellatis 15-18-flori8 ; involiicri equamis 3-4- 
seriatia oblongo-lanceolatis sub-acutie raargine scarioso eroso superne ciliatis; pappi aetis fi. 
masc. subclavellatis. — B. ptarmiciefolia ? Gray, PI. Wright, 2, p. 83. Monntain ravine, Santa 
Cruz, Sonora ; Wright (1200, male). Puerto de Paysano ; Bigeloio (both, sexes). Oak woods 
between Babocomori and Sanla Cruz ; Thiirher. Tlie additional specimens, of both sexes, show 
this to be clearly different from the preceding, and probably an unpublished species. The 
leaves in Dr. Eigelow's specimens, from which the character is principally taken, are much 
broader than in Wright's or Thurber's, more irregularly toothed or incised, and all obtuse, 
while those of "Wright's are lanceolate or linear- lanceolate, and often acute. 

Baccharis RAMULOSA, Gray, PI. Thurb. p. 301. Aplopappus (Aplodiscus) ramulosa, DO. 
Prodr. 5, p. 350. Linosyris (Aplodiscus) ramulosa. Gray, PI. Wright, 1, p. 97, & 2, p. 80. 
Organ mountains, Cobre, etc., New Mexico; Wright, Bigelow, Guadalupe cafion ; Parry. 
Mr. Wright and Dr. Gregg cjllected only the male plant, apparently the same with that pub- 
lished by De Candolle from Keerl's Mexican collection. The fertile plant now being known, 
the plant is found to be a genuine Baccharis. Berlandier likewise collected specimens in the 
mountains of San Luis Potosi (No, 1352.) 

TiisSARiA (Phalacroclinb) boeealis. Gray, PI. Fendl. p. 75, <& PI. Wright, I. c. River 
bottoms from the Rio Grande, New Mexico, to the Colorado of the West ; gathered by all the 
collectors. Shrubby, 4-8 feet high, called Arrow-ivood ; forming dense thickets. 

Pluciiea CAMrHORATA, DC; Torr. d Gray, Fl. 2, p. 261. San Luis Bey, California ; Parry. 
Heads rather larger and the pedicels more downy ; otherwise just as in the eastern plant. 

Plochea r<ETiDA, DO.; Torr. cfe Gray, I. c. Low places on the San Pedro, Texas ; Bigehiu. 

FiLAGiN0i«i8 M-ULTTCAULB, Tcrr. <& Gray, Fl. 2, p. 263, d in Pope B. R. Survey, t. 3. Eastern 
Texas to El Paso and Chihuahua. Evidently F. Drumraondii, Torr. <& Gray, is not a distinct 
species. It is distributed among Berlandier's reliquice, under the Nos. 568, 1011, 10G7, 1958, 
2109, 2241, 2497. 

DiAPERiA PROLEFBRA, Nutt.; Torr. d Gray, I. o. Stony hills of the Pecos and Blanco; Texas ; 
Wright. 

EvAX (Hespbrevax) caxileecens, Gray, in. Bot. Whipp. Bep. p. 101, t. 11. Psilocarphus caules- 
cens, Benth. PI. Hartw. p. 319. Sacramento valley, California ; Mr. Fitch. 

Psilocarphus tenellus, Nutt.; Torr. d Gray, I. c, d in Whipp. Rep. I. c. With the last; Mr. 
Fitch. 

Styloceihe micropoides, Gray, PI. Wright, 2, p. 84. Fronteras, New Mexico ; Wright, 
Parry. 

EcLiPTA erecta, Linn.; var. brachypoda, Torr. d Gray. Sau Antonio, San Pedro, and the 
lower Rio Grande, Texas ; Schott, etc. 

BoRRiCHiA FRUTESCBNS, DG. Texas, on the Pecos ; Wright. Galveston and the lower -Eio 
Grande ; Schott. 

SiLPniUM 8CABBKBIMUM, Fll; Torr. d Gray, Fl. 2, p. 2T9. On the Sahiual, Texas ; Wright. 



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BOTANY. 85 

BfiRLAKDrERA Tesana, DC. Prodr. 5, p. 516; Deless. Ic. Sd. 4, t. 26. Coleto creek and the 
Eio Grande, Texas; SchoU. 

Bbelahdiera lyrata, Benth. PI. Hartw. p. 17. Oobre, Mimbres, Mule creek, etc , New- 
Mexico ; Bigelow, Wright. On the Eio Grande and in the Sierra Madre, Sonota ; SchoU, etc. 

Engelmannia pisbatifida, Torr. (& Gray. I. c. Eock creek, Texas ; Bigelow. On the Eio 
Grande, at Cleto creek ; SchoU. A marked variety of this, with single and larger heads, 
smaller pappus, and less lobed leaves, was gathered by Thurber at Ojo Caliente, Chihuahua. 

Melampcdium cineeeum, do.; Gray, PI. Wright, 1, p. 103, & 2, p. 85, & var. ramosissimum 
(M. ramosissimum, DC.) Common in Texas and New Mexico. Very various forms occur in 
Berlandier's collection, under Nos, 833, 2242, from San Fernando, Coahuila ; 1492, 1881, from 
Bexar ; and 607, 2017, from Laredo and the Nueces. 

Melampodium iiiSPiDuu, M. B. K.; Gray, PI. Wright, '2, p. 85. Between the San Pedro and 
Santa Cruz, Sonera; Wright. Accords well with Mexican specimens collected by Schaifner. 

Mblampoditim longicobno, (Gray, PI. Thurber, p. 3S1) : annuum, hispidulnm, diffuse ramo- 
sum ; foliis lanceolatis subintegerrimis; pedunculis alaribus filiformibus (|— 2 unc. longis) 
monocephalis ; involucri sc[uami8 internis fructiferis 7-10 nervoso-striatis dorso vix muricatis 
apice in cornu longiasimum extua sericeo-pnherulum circinnatum productis ; ligulis aureis 
oblongis. — Near Santa Cruz, Sonora ; Thtirber. Santa Magdalena, Sonora ; Scholt. The pub- 
lished character of this curious species is here somewhat amended, since Mr, Schott'a specimens 
(which are in good flower, while those of Mr. Thurber were in fruit) show conspicuous rays much 
longer than the disk ; but they have the same long and silky horns. The leaves are not always 
perfectly entire, nor all obtuse. 

MCRANOCARPUS, JVor. Gen. 

Capitulum pauciflorum ; floribus exterioribus 3-4 fremineis subradiatis, ligula minima 2-3- 
loba, stylo hreviore ; disci totidem sterilibns, tubo corollEe cylindrico, limbo cyathiformi 5-fido. 
Involucrum 1-2-bracteolatum (bracteolis linearihus parvis), 3-4-phyllum : squamiB oblongte, 
obtu803, membranaccEe, erectas, subplanse, demum deciduse. Eeceptaculum planum : paleje 
lineares parvte inter ilores. Antherte oblongEe, ecaudatse. Stylus fl. masc. inclusua, indivisus, 
apice clavato-pubescens ; fl. fcem, bifidus, ramis inappendiculatis. Ovaria disci inania, epap- 
posa. Achenia (radii) difTormis, nempe 1-2 linearia vel aubulata, subteretia, l^via, persis- 
tentia, aristis 2 validis Igevissimis divergentibus seu recurvis persistentibus cornuta; cfetera 
breviora et crassiora, intus ssepe tuberculato-rugosa, aristis brevioribus vel obsoletis. — Herba 
annua, gracilis, fere glabra, Heterospermi facie, microcephala ; foliis oppositis 3-5-sectis, sum- 
misve integris, filiformibus ; capitulis solitariis pedunculatis ; floribus flavis. 

DrcRANOOABPDS PAKVirLORUS, Gray, PI. Thurber, p. 322, adn. Heteroapermum dicranocar- 
pum, Gray, PI. WrigM, 1, p. 109. Plains below San Carlos, Tamaulipas ; Parry. Only 
mature achenia of this plant were known, from Wright's first collection, persisting on the 
receptacle from which everything else had fallen. The flowers, etc., furnished by Dr. Parry, 
enable us to complete the characters ; these show that the plant is by no means a Heterosper- 
mum, (although allied to that genus,) but a new generic type which, according to the classifi- 
cation adopted, must be referred to the rather incongruous subtribe Melampodinea:;. The 
flowering heads are only a line and a half in length, and the scarcely explanate ray-corollas are 



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86 UNITED STATES AKD MEXICAN BOUNDARY. 

smaller than those of the disk. The fertile ovaries, at least the one or two which make tlie 
longer and siihulate achenia, begin to elongate soon after anthesis, and to project to twice or 
thrice the length of the involucre. The scales of the latter subtend the fertile flowers, but do 
not inclose or embrace them. Paleas of the rece[)tacle much smaller than the involucral scales, 
linear, plane, forming a circle between the ray and the diek, one subtending each sterile flower. 
Sterile stj-le barely bidentate at the apicnlate tip. The longer achenia, which usually persist 
affcr the fall of the involucre, etc., are from 3 to 4^ lines long, (excluding the awns,) barely 
half a line in thickness, slightly obcompressed, even, not at all margined, tipped with two 
stout, diverging or sometimes reeurved-spreading, smooth, rigid, inarticulated and persistent, 
subulate awns, of 1^ to 3 lines in length. There is usually only one such achenium to each 
capifulum. The others are shorter and thicker, and tuberculate-rugose inside, but otherwise 
similar, or one of them barely 2 lines long, oblong, truncate at both ends, the apex bearing two 
very short and divaricate or almost obsolete awns or horns. 

Partiienivm mcAKUM, H. B. K. ; Gray, PI. Wright, I, p. 1 03, & 2, p. 85. P. ramosissinium, 
DC. Prodr. 5, p. 532. From the Pecos to Cobre, etc. ; Bigeloto, Wright, Scholt. On the llio 
Grande, below Mount Carniel; Parry. 

Partdenium abgestatdm (sp. nov.); fruticosura, pube brevi appressima sericeo-incanum ; 
foliis spathulato-lanceolatis oblongisve in petiolura longe attenuatis parce dentatis sen laciniatis 
sub-triplinerviis ; ramulis floridis elongatis nudis oligocephalis ; involucri squamis obtusissimis ; 
acheniis sericeis; pappo e paleis 2 memhranaceis lanceolatis. — Near Escondido Creek, Texas, in 
rocky places, Sept. 1852; Br. Bigelow. — A well marked species, connecting the sections Argy- 
rochaata and Parthenichteta; the leaves and branches whitened with a very fine and close silky- 
silvery pubescence, which appears to he wholly or nearly persistent. Leaves one to two inches 
long, including the tapering base and petiole, 2 to 5 lines wide, mostly acute, scarcely veined, 
beset on each margin with from one to three salient teeth, or sharp lobes. Flowering braachlets 
slender, 4 to 8 inches long, nearly leafless and peduncle-like, bearing 3 to 7 sub-sessiie heads 
(as large as those of P. incanura) in a cluster. Exterior scales of the involucre short, orbicular- 
ovate ; the inner orbicular, searious- membranaceous. Palese of the pappus lanceolate or oblong- 
lanceolate, rather narrower and less obtuse than in P. Hysterophorus, puberulent, the inner 
edge more or less adnate to the base of the broadly obnvate and cucullate emarginate ligule. 

Partheniom HYSTEROPHora's, Linn. Texas, etc. ; common in low places. 

pARTHEsrcE MOLLIS, Gray, PI. Wright, 2, p. 85. Near Santa Cruz, Sonora; Wright, Thurher. 

EupiiaosYSE AMBROsr^FOLiA, Gray, PI. Wright, \,p. 102, & 2,p. 85. Near Conde's Camp, New 
Mexico; Wright. Cook's Springs ; Bigelow. 

IvA dealeata, Gray, PI. Wright, 1, p. 104. Leon Springs; Bigeloiv. Lagunas de Patos, 
Chihuahua; Thurher. 

DICORIA, Torr. & Gray, in Emory, Pep., 1848, p. 143. 

Capitulum monoicum; floribus foemineis 2 in ambitu, masculis 8-12 in disco. Involucrum 
patalum, duplex, exterius e phyllis 5 ovalibus herbaceis uniseriatis, interius e squamis 2 orbicu- 
latis tenuiter scariosis planis mox accrescentibus, utraque florem fceraineum fuicraote. Recepla- 
culum parvum, jlanum, paleis angustis lineari-spathulatis inter flores. Fl. Foem. Corolla 
nulla; stylus alte bifidus, ramis linearibus glabria. i'7, masc. Corolla obconica, 5-dentata. 
Antheraa vix coaiitie, sed fiiamentis raonadelphis. Stylus abortivus in synemate apice 5-dentato 



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BOTANY. 87 

inclusus, simplicissinms. Ovarium nuUum, Acbenia obcompresso-plana, ala laciaiata circum- 
data, cum squamis friictiferis petal oideo-scariosia iis majoribiis involucrara externum multoties 
superantia. Pappus brevia, plurisetulosua, deciduus vel cvanescens. — Ilerba humilis, ramosa, 
hiepidulo-canescens, alterniiolia ; capitulia racemoso-panicuUtis, fructiferis cernuis, 

D. CANESCENS. In the sandy desert of tbe Gila and of the Colorado ; Emory. A small speci- 
men of this curious plant was brought home by Col, Emory from his reconnaissance of the G-ila, 
etc., in 18i6; but it has not again been met with. The base of tbe plant is unknown. Leaves, 
at least tbe upper ones, alternate, oval, obtusely dentate, on slender petioles, scabrous or hispid, 
and when young canescently villous on both sides; those of the flowering branches gradually 
reduced to small and spatulate bracts. Heads short- pedicelled, arranged in loose and nearly 
leafless spikes or racemes, which are panicled at tbe summit of the stem in anthesis, only one 
and a half lines long; but in fruit tbe whitish and somewhat glandular and eroee [air of inner 
involncral scales become three or four lines long and almost as broad ; they are loosely appressed 
to the achenia -whieh they subtend, and appear to be deciduous with them at maturity. The 
mature achenia are about 3 lines long, and 2 lines wide, including the strong laciniate- toothed 
and incised wing, both faces slightly hispid, and carinately one-nerved in the middle ; near the 
summit of the nerve of the inner, and sometimes of the outer face also, a small crest often appears 
like the rudiments of an anterior and posterior wing. Although the full-grown achenia com- 
monly appear destitute of a pappus, yet in the flowering state there is always a rather con- 
spicuous ring of short bristles surrounding the base of the naked style, and traces of it are 
generally discernible at maturity. The bristles are united at the base into a ring, and appear 
to form a true pappus. They consist, however, of single rows of cells, exactly like the short 
and fine bristly hairs which fringe the margin of the inner iuvolucral scales. It will be seen 
that the genus belongs to the division Iveee of De Candolle. The name (from dta, two, and 
K.ofnff, a bug,) alludes to the two achenia appearing like bugs, or like the achenia of some species 
of Coreopsis. 

AMER01S4 PSiLOSTAcuYA, DC. I'rodr. 5, p. 526 ; Gray, Fl. Wright^ I. c. A. coronopi folia, Torr. 
& Gray. Common, from Texas to Sonora. It occurs both with unarmed and tuberculate fruit.* 

Fbanseru TENrifOLiA, var. TRiPiNXATiFiDA, Gra'j, I. c. Common from Texas to Sonora. This 
is both Ambrosia fruticosa (excl. var. /9) and A. confertiflora of Dc Candolle ; but none of the 
forms in Berlandier's collection are at all shrubby. 

Feanseeia Hookekiana, Nutt. El Paso to Sonora, etc.; common. 

Ebanseria dumosa, Groy, in Fremont, 2d JUxped. p. 316 ; var. albicaulis .F. albicaulis, Torr. 
PI. Frem. p. 16. Desert of the Colorado of the West ; common ; Thurber, Bigehto, Schott. 

Fkanseeia deltoidea, Torr. PI. Fiemont, p. 15. Valley of the Gila ; Parry. A well-marked 
species ; but it should be compared with F. chenopodifolia, Bentli. Bot. Voy. Sulph., from lower 
California. 

" The following s a un b d pedes, occurring in Berlandier's rrfigwiiE; 

Ambeosia cbeir t fol (p ov.): humiliB, pube miniita canescens; ramis foliofis ; foliia oblongo-liinceolntls sen 
oblongo-epatJiulat d a m libus. Buperioribus florcs f<cmiaeOB fulciantibus ; capiluiis maaculis eiongato-racemoKia 

ebi^aetcnris : fruotibus 4 5 p n pinis crassis.— Saa Fernando, Cohahuila, 1513, 3013.— A perennM herb, apparently 

not over a foot in height, cnn-iderajly brsinchcd. Leaves an insh or rather more iu length, 3 to 6 lines wide, all undivided 
and entire, whitened both sides with a fine and short appressed pubescence. Sterile heads 2| lines long, nearly glabrous, 
aimed with four or five short and stout spines, which are about the length of the Bimiliir beait. 



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OB UNITED STATES AND MEXICAN BOUNDARY. 

Hymbsoclba monojtra, Torr. d Gray, PI. Fendl. p. 79, & PI. Wright, I. c. Common on the 
frontier, from Eagle Pass, Texas, to Sonera. 

ZrsNiA TENuiFLORA, Jucq. Ic. Ear. 3, i. 590 ; Gray, PI. Wright, 2, p. 8(5. Sonera anil Clii- 
hnahua ; Thurber, Sckott, etc, 

Zinnia (DiPLOTHiiix) acerosa, Gray, PI. Wright, I, p. 106. Dry hills, from Eagle Springs, 
etc , to El Paso ; Bigelow, etc. 

Zinnia (Diplothrix) orandielora, Nutt.; Gray, PL Wright, l,p. 105. Sonora, Chihuahua, 
New Mexico, and W. Texas ; gathered by all the collectors. 

Zinnia (Diplothrix) pumila, Gray, PI. Fendl.p. 81, & PI. Wright, I. c. Sonora, lower Rio 
Grande, etc. Intermediate forms appear to connect tMa with the last. 

Zinnia (Heterosvne) asomala, Gray, I. c. t. 10,/. 2. Eagle Pass on the Rio Grando {Bige- 
low) to the San Pedro, Pecos, etc. 

Hbliopsis parvifolia, Gray, PL Wright, 2, p. 86. Between Babocomori and Santa Crua, 
Sonora ; Wright, Thurber. Some of Mr. Thurber'a specimens have larger leaves than those of 
Wright. 

Heuopsis buphtualmoides, Dunal, which is also H. canescens, IT. B. K. Between San Ber- 
nardino and Janos, Chihuahua ; Thurher. 

Halea Texana, Gray, PL Pendl.'p. 83, & PL Wright, I. c. Gravelly plains, western and 
southern Texas. 

Lepacuys coLUMNAEia, Torr. & Gray, FL 2, _p. 215 ; & var. pulchekeima. Western Texas to 
New Mexico. 

Lepachys Tagetes, Gray, in Bot. WhippL Sep. p. 103. L. columnaris, var.? Tagetes, Gray, 
PL Wright, I. c. "Western Texas to El Paso, etc. 

RuDEECKiA PBLGiDA, Ait. Western Texas ; Bigelow. 

Aldama uniseeiaus. Gray, PL Lindh. 2, p. 228. Southern Texas ; Schott, etc. 

Hbltomgrib multiplora, Nutt.; Gray, PL FendL p. 87 ; and var. hispida, Gray, PL Wright, 
2, p. 87. New Mexico, Sonora. 

Heliombris tenuifolia, Gray, I. c. From the San Pedro, Western Texas to Sonora, 
Chihuahua, etc, 

Flobreissia cernba, BG. Prodr. 5,^. 593. From the Pecos and Eagle Pass, on the Rio 
Grande, to the Mimbres, etc., "sometimes covering large tracts of ground in villages and 
Mesquite bottoms ;" Scholt. 

Encelia Californka, Nutt. in Trans. Amer. PUL 8oc. 7, p. 357. San Dit^go, California ; 
Schott. 

EscELiA coNSPBitaA, Benth. Bot. Voy. Sulph.p. 2S. Diluvial banks of the Colorado; February; 
Schott. This must be Bentham's E, conapersa ; but the involucre is more pubescent than he 
describes, the rays glabrous, and the foliage retains much of the close cinereous pubescence. 
The heads, also, are quite small. It is probably the same as No. 308, of Coulter's Californiatt 
collection. 

Encelia nivea, Benth. L c. E. farinosa, Gray, in Emory Rep. p. 143. On the Gila ; 
Emory, Parry, etc., and the Colorado of the West; Bigeloio. This is the same as Coulter's 
No. 327, and must bo Bentham's E. nivea, from Lower California, although the characters do 
not wholly accord. 



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BOTANY. 89 

BiMSiA (Gerjea) canescens, Oray, PI. Fendl. p. 85. Sand hills near Fort Yuma, California, 
January ; SchoU. A striking species, with a remarkably white-woolly involucre and large 
ehowy rays. A less hairy form with laciaiate leaves was gathered on the Gila by Dr. Parry. 

SiMSiA (Gerjea, sed eradiata) prtitescehs, (ep. nov.): hispidulo-scaberrima, ramosiasima ; foliis 
parvis (^-|-pol[icaribuB) oblongis seu ellipticis utrinc^ue obtusis integerrimis, petiolo nudo ; 
capitulia longiuscule pedunculatis ramulos terminantibus discoideis ; involucri squamis exterio- 
ribus lanceolatis ovatisve acuminatis subsquarrcsis albo-hirtis, interioribus obovatis obtueis ; 
■ acheniis margine cum aristis brevibua (Jnterdum fere obsoletis) longissime villosissimie. Agua 
Caiiente, on tlie Gila ; Colond Emory, November 28, 1846. Sierra Prieta, near Fort Yuma, 
E. California, December, 1854 ; SchoU. Also gathered (with rather large heads) by Colond 
Fremont, in 1849, somewhere in the interior country of California. Fragments of this plant, 
too poor to characterize, have been known for some years in a small collection made by Colonel 
Emory in hie earliest exploration of the Gila country. There are now good materials at hand. 
It appears that the plant must be associated with another from the same region, upon which I 
formerly proposed to found a genus under the name of Germa, but afterwards {PI. Fendl. I. c.) 
concluded to append to Simsia. The present apecies ia remarkably distinguished, however, by 
its woody or suffruticoae, slender stems, (apparently belonging to a low and much branched 
bushy plant,) and by the total absence of the rays, which are remarkably large in its congener. 
Very likely the genus Ger^a (placed between Simsia and Encelia) should be re-established for 
these two species ; but for the present they may be appended to Simsia, although new dis- 
coveries may more probably approximate them to Encelia. The heads vary from a quarter to 
half an inch in diameter. The awns of the pappua are often as long as the much elongated 
and dense fringe of soft white hairs which surround the otherwise glabrous achenium, but always 
covered with similar long hairs. Sometimes they are almost obsolete, or reduced to a slender 
base for the inaertiou of the tuft of haira, 

Simsia (Ger^a) scaposa, Oray, PI. Wright. I. c. Stony hilla between the Mimbres and the 
Kio Grande, New Mexico ; Wright. 

Simsia exabistata, Gray, PI. Wright. 2, p. 87. On the San Pedro, &c., Sonora ; gathered 
by all the collectors. 

Simsia (Baera-itia) calva, Gray, PL Lindh. 2, p. 228. Throughout southern and western 
Texas ; " common on dry and stony hill-sides of the chalk and oolite ;" Bclwtt. 

ViGUiEBA CORDIPOLIA, Gray, PL Wright. \,p. 107, <k2,p. 89. Common in New Mexico and 
northern Sonora and Chihuahua ; gathered by all the collectors. 

ViGUiBRA LAXA, DO.; Gray, L c. Cobre, &c.. New Mexico ; Wright. 

ViGUlERA LACiNiATA, (sp. nov.): frutescens, hispidulo-scabra ; foliis plerisque alternis subcon- 
fertis petiolatis hastato- lanceolatis incisis seu laciniato-pinnatifidis snbtus grosse reticulatis 
rigidis, summis parvis bracteiformibus ; capitulis geminis ternisve breviter pedunculatis ; invo- 
lucri 2-3-serialis squamis ovato-oblongis vix appendiculatis ; receptaculo planiusculo ; li-ulis 
integerrimis ; acheniis aubciliatis aristis palefeformibua 2 et squamellis latis apice eroso-dentatis 
6 — 8 coronatia.— Rancho Gamacha, east of San Diego, California, September, 1855 ; SchoU. A 
remarkable speeiea, apparently a low and more or less shrubby plant, with slender branches. 
Leaves about 1^ inch long, including the petiole, thin but rigid, very scabrous, the coarse 
teeth, or lobes, ovate or triangular, blunt. Heads nearly half an inch long ; rays nearly of the 
same length. Squamelhe of the pappus thick. Palere of the receptacle acutish. 
12 k 



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90 UNITED STATES AND MEXICAN BOUNDARY. 

Actihomeeis WEiOHTn, (rray, PI. Fendl. p. 85, <& PI. Wright. I. c. Between Cobre and 
Conde's Camp, New Mexico, etc. ; Wright, Thurber. 

AoTiNOMERis LONGiifOLiA, Gray, PI. Wright. 2, p. 89. Mountains east of Santa Cruz, Sonora ; 
Wright. 

TiTHONiA TLitJKFoaMis, Gass. Magdalena, Sonora; Thurher, "Flowers orange-yellow." 

Helianthus ciliarb, DG, Prodr. 5, p. 58T. From the lower Eio Grande to the Gobre, etc. ; 
New Mexico ; also in Sonora, where Mr, Thurber gathered a form witli remarkably broad leaves. 

Helianthus grosse-seeratus, Martem; var., Gray, PI. Wright. 2, p. 89. Valley of the Mim- 
bres, New Mexico ; Wright. Between tlie Eio Salado and Victoria, Texas ; Scholt. 

Helianthus Maximiliani, Schrad.; BG. I. c. Leon Springs, and on the Limpia; Bigelow. 
Eio Seco, Texas ; Schoit. 

Heuanthits angustifolius, Linn. Between Indianola and Victoria, Texas ; Schott. 

Helianthus lenticulabis, Dougl. in Bot. iteg. t. 1265. Valley of the Gila ; Schoit. Common 
in Texas and Kew Mexico. 

Heltanthus pbtiolabis, var. caneecehs, Gray, PI. Wright. 1, p. 108, (& 2, p. 89. The remark- 
ably silvery-canescent form. On the Eio Grande, below El Paso ; Wright, Bigehw, etc. 

Helianthus, in PI. Wright. I. c, referred to H. petiolaris. Cobre, Wright, (1231,) Escondido 
creek ; Bigelow. A singular and still doubtful plant. 

Helianthus cucumeeifolius, T<yrr. <& Gray, Fl. 2, p. 319. On the lower Eio Grande ; Schoit. 

Heliakthts cucuMKRii'OLius, var. PRECOX. H. praeeox, Englm. & Gray, PL Lindh. H, debilis, 
var, Torr. <& Gray, Fl. I. c. Cleto creek, Texas; Schott. 

Helianthus aegophtllus, Torr. <& Gray, I. c. Cleto creek, between Victoria and San Antonio, 
Texas ; Schott. A striking species, recently introduced into the gardens. 

Helianthus (Haepalium) tephrodbs, (sp. nov.): humilis, pube appressissima canescens ; 
foliis plerumque alternis ovatis petiolatia subserratis basi trinerviis, junioribus cano-argenteis ; 
pedunculo gracili monocephalo ; involucri sc^uamis ovato-lanceolatis mucronato-acutatis ; pappo 
e sqnamellis paleiave plurimis, majoribus 1 — 2 s^pius aristiformibus deciduis. — Miraaol del 
Monte, in the Californian desert of the Colorado, in sandy places by the road-side, October, 1855 ; 
Schoit. The specimen is incomplete, and hardly sufficient for proper determination ; the base 
of the stem and the root unknown. The stems or branches collected are scarcely a foot long, 
and slender. Leaves about an inch long. Scales of the involucre merely biserial. Eays about 
12, yellow; disk-corollas tipped with purple. The chaffy awns of the pappus are sometimes 
elonga' ed, but often one or both of them reduced to strong squamellie, like the rest. 

Coreopsis (Agaeista) calliopsidea. Agarista calliopsidea, BG. Prodr, 5, p. 569. Moist 
and grassy plains between Monterey and Santa Barbara, California. An unpublished Peruvian 
species connects Agarista with Coreopsis, of which it can form only a section. 

Coreopsis caedaminefolia, Torr. d Gray, Fl. 2, p. 340. Low places on the Limpia, Eio 
Grande, etc. 

CoEEOPSis Drummondii, Torr. <lt Gray, var. Western Texas ; Wright. 
Thelesperma filifolil'M, Gray, in Keiv Jour. Bot. 1, p. 252, & PI. Wright. I. c. Com- 
mon in Southern and Western Texas. 

Tiiblespeema gracile, Gray, I. c. From the Limpia to Cobre, New Mexico, and Santa 
Cruz, Sonora, {Schott.} 

Thblbepeema subsimplicipolium, Gray in Hooh. Kew Jour. But. 1, p. 252 (nom, paullo 
mutatum) : foliis rigidis anguste lineari-filiformibus, cauliais simplicibns trisectisve, inferiori- 



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BOTANY. 91 

Tdus et radicalibus interdam 5-sectis vel biternatiaectis ; capitulis radiatis ; acheniia fusiformibus 
(extimis tantum tuberculato-rugosis) pappo bieorni brevissimo erecto nunc fere obsolcto coronatia. 
Cosmidium aimplicifolium, Gray, PI. Fendl. p. 86. Gravelly hills, near Sacati ; Bigelow. San 
Pedro Kiver, Sonora ; SchoU, This baa been confused both with T. gracilea and T. fiUfoliunij 
and specimena in Wright's collection have perhaps been distributed as a form of the latter. Its 
rigid sterna and foliage accord 'with the former, though the leaves are commonly less divided ; 
bat the rays distinguish it from that species, while the pappus (reduced to two exceedingly 
short or obsolete teeth, which are strictly erect, and slightly hairy, but not barbed) distinguishes 
it from both epecies. A nearly or quite simple leaved state of this species is ray Cosmidium 
simplicifolium, which name, a little altered to bring it nearer the fact, it is proposed to retain. 

Cosmos bipinnatuSj var. parviplorus. Gray, PL Wright. 2, p. 90. From the Cobre, New 
Mexico, to Santa Cruz, Sonora ; Bigelow, Wright, Tkurber. 

EiDENs isii'iNNArA, L. Chihuahua and Sonora ; Thurler. Mountains near San Esteban, 
Bigelow. Cobre creek, Wriglit. The awns are only two, but in all other respects the same as 
B. bipinnata. Wright's No. 345 has the achenia mostly two-awned, 

BiDBNS BiGELOVii (sp, nov.) : annua, fere glabra ; caule ramoso gracile suberecto ; foliis 
trisectis, segmentis 3-5-partitis, lotis oblongis cuneatisve paucius pinnatifido-incisis ; capitulis 
subsolitariis longe pedunculatis ; involucre glabriusculo ; ligulis albidia ? discnm baud superan- 
ttbus afepiusve nuUis ; acheniia heteromorphis, esterioribus brevibus lineari-cuneatis truncatis 
papilloso-hispidulis scaherrimia, pappo nunc breviter S-S-aristatis nunc breviasime bieorni vel 
obaoleto, cseteris angustissime liuearibus lievibus (semipollicaribus) breviter 2-(raoro 3}-aristatis. 
Banks of the Rio Limpia ; Bigelow, Cibolo valley, Texas, Parry, etc. Mountain arroyo, Rock 
creek and Puerto de Paysanoa ; Bigelow, (var. with the awns moatly 3 and longer.) In foliage 
and aspect this plant is aomewhat intermediate between B, bipinnata and B. tenuisecta ; in 
fructification it is much more like B, hetcrosperma, PI. Wright, but the heada are twice or thrice 
the size. The outer achenia are truncate and rough in all the specimens. Awns of the diak- 
achenia 1 to 1| line long. To this belonga No. 346 of Wright's first collection referred to, B. 
tenuisecta in PI. Wright. 1, js. 109. 

BiDBNS HETBROSPERMA, Gray, PI. WrigJit. 2, p. 90. New Mexico ; known only from plants 
raised from seeds gathered by Wright. 

BiDENS FffiNicuLiFOLiA, DC, var. Gray, PI. Wright. I. c. Northern Sonora; Wright, 
Thurher. 

BiDBNS BETEROPHYLLA, Ort, ? ; Gray, PI. Wright. I. c. Between the San Pedro and Santa 
Cruz, Sonora; Wright. 

BiDBNS CHRYSANTHBMOiDES, Michx. Ojo Oaliente, Chihuahua ; Thurler. Sati Felipe ; Schott, 
Bigelow. B. helianthoidee, H. B. K., is probably the same species. 

Hetekospbrmum TAQETlNtJM, Gray, PI. Fendl. dc PI. Wright. I. c. Mountains of the Lim- 
pia and Cobre, New Mexico, Wright, Bigelow. Too near H. pinnatum. 

GUARDIOLA PLATYPHYLLA, Gray, PI. Wright. 2, p. 91. Sonora, between Babocomori and 
Santa Cruz ; Thurber, Wright. Sierra de Pajarito ; Schott. 

Leptosyne Douolasii, BG. Prodr. 5, p. 531 ; Terr. <& Gray, Fl. 2, p. 355. Moist and 



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92 UNITED STATES AND MEXICAN liOUNDARY. 

grassy plains between Monterey and Santa Barbara, California ; Farry. Dr. Stillman lias de- 
tected a second species of tbis genus.* 

TucKBRMAKiA MARiTiMA, Mitt, in Truus. Amev. Phil. Soc. 7, p 363; Torr. & Gray, I. c. San 
Diego, California ; common near tbe beach all around the bay, March ; Parry. It baa been 
introduced into the gardens from seeda gathered by Dr. Parry, and is a very showy plant, 

Sahvitalia Aeerti, Gray, Fl. Fendl. f. 8Y. Stony hills, Cobre, New Mexico ; THgelow, 
Wriffht, Thurber. 

Sanvitalia teagmfolia, do. Prodr. 5, p. 628. On the Eio Grande above Presidio ; ScJwit. 

Oliooqynb Tampicaha, DC. Prodr. 5, p. 529. Eagle Pass, Santa Rosa, etc., on the Rio 
Grande ; Bigelow, Scliott. 

XiMENESIA BNCBLioiDES, Cuv. In varioiis forms, especially var. cana. From the lower llio 
Grande to Cobre and the Gila. 

Vbbbesiha podocbphala, Gray, PI. Wright. 2, p. 92. Sonora, near Santa Crun, Wright. 
Sierra west of Santa Cruz and Tucson ; Schott. This ia nearly related to V. pedunculosa, 
SohuHz, Pip. {Actinomeris pedunculosa, DO., Verbesina capitaneja, Nees) ; but that lias the 
leaves decurrent on the stem. 

Verbesina Virginica, Linn. var. (V. microptera & V. polycephala, DC.) Lower Rio Grande, 
gtc; Schott. 

Zbxmenia Texaha, Gray, PI. Wright. 1, p. 112. "Wirtgenia Texana, SchvXh, Bip. in Seem. 
Bot. Herald, p. 304, On the San Antonio, Pecos, San Pedro, and the Rio Grande ; Bigehw, 
Parry, etc. Dr. Schultz, apparently with reason, has separated this from Zexmenia, and has 
referred it to his African genus Wirtgenia, on account of a semilunar or roundish squamula 
appressed to the base of tbe achenium on each side, and indeed adherent to it. Here it is of 
soft fleshy texture when in good condition, but it dries up at length, leaving only a vestige. 
Dr. Schultz has overlooked the fact that the plant (varying greatly as to the wings of the ache- 
nium and the awns of the pappus) is pretty clearly Wedelia hispida, S. B. K. , which specific 
name may claim to be restored, A specimen from Schultz, gathered by Sehaffner, in Mexico, 
near Tacubaya, is the same as a plant cultivated in the Jardin des Platites in the year 1815. 

Zbxmesia beevifolia. Gray, PI. Wright. 1, p. 112. Mountains, etc., on the Rio Grande at 
the great caiion, Eagle Pass, Rio Concho; Bigelow, Parry, Schott. 

Spilanthbs Nuttallii, 2'orr. d: Gray, Fl. 2, p. 356, var. Western Texas, San Felipe^ Pie- 
dras Pintaa, Zocate creek, Los Moros, etc.; Bigekno, Schott. 

Flavbria chlor^folia, Gray, PI. Fendl. p. 88. Comanche and Leon Springs, southern 
Texas ; Farry, Bigehw, 

Flavbria Contraybrba, Linn. Along the lower Rio Grande ; Bigelow, Parry. 

Sariwellia Flavbria, Gray, Fl. Wright. 1, p. 122. Rio Cabeza, Texas ; Thurber. Plain 
below San Carlos, Cohahuila; Schott. 

° Leitosykb Stiiuianii (5p, Dov,} : foliis irLfeTiorilniiS opiKeitis, omiiibiiB trifidia seu piiinato-5-piirtitif;, seKmcntis ihachi 
que planlH nnguste lincaribins ; equnmis involucil extern i oTjlongis ; corollis hand aimuliito-barbiitiB ; appendidbus styii fl. 
disci haud apiculntis ; neheniifi gisbertimis, radii apiciilatis margine fungoeo subrugono dnctis. In tke valley of tba Upper 
Sacramento , Dr SliUmaii. 

Tlie Eingle Bpecimen colleeted is a epao higb, witli slioiter and coarser leaves tlian L. Doiiglasii, and smaller hoads. 
The scales of the oslerior involucre are broade: and shorter, rather fBW(;r, «nd externally sparingly beaMed at their boee. 
There ie only a faint indication of the bearded ring, so manifest on the tnbe of the disk-corollns of f. Douglasii ; nor do the 
achenia show a truce of tbe capitate liaii-s of that specieB. The appendages of the style, moreover, are rcty obtuse, and 
destitute of the abrupt nnd sharp liji. Still it is an uridonbted congenoi' of L. Douglasii, 



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BOTANY. 93 

Adbnophylliim Weightii, Grcij, PI. Wriglit. 2, p. 92. Hill sides at the Oobre, New Mexico ; 
Wright, Bigdow. 

Lbbetina canobixata, Cass .; DC. Prodr. 5, p. 639. Prairies near Chihualiua; Thurher. Sonora, 
eaat of the Sierra Madre ; Scliott. The genus is probably to be reduced to Adenophyllum, as I 
have elsewhere suggested. 

DisoDiA CHKYSAMTnEMOiDES, Lay. San Estaban and Eoek creek; JHgehio. Chihuahua; 
Thurher. 

Dysodia porophylloides, Gray, PI. Tkurler, p. 322. San Felipe, interior of California ; 
Thurber. 

Hymbnatiierum (Aciphyll^iEa) acerosum, Gray, PI. Wright. 1, p. 115. Hille, etc., from 
San Felipe, Texas, to New Mexico and Sonora, 

IIymematherum Wkiqhtii, Gray, PI. Fendl. &Pl. Wright. I. a. Common in western Texas. 

Hymenatheetjm POLYcn.iBTUM, Gray, I. c. Prairies, from Presidio del Norte to Cobre, New 
Mexico. 

Hymekatherum pentachjetum, DC; Gray, I. c. Kocky or gravelly hills, from lower Texas 
to Sonora. 

Hymehatheeiim tentjifolium, Cas8.; Gray, I, c. Gravelly plains, lower Texas to Chihuahua 
and Sonora. 

Hymenatherum Gnaphaliopsis, Gray, I. c. Plains, from the lower Rio Grande to New Leon. 
In the distribution of Berlandier's collection this occurs under the Nos. 962, 1404, 140'i', 1861, 
2392. (No. 14016 in DC. Prodr. is a typographical error for 1407.) "Called Lepiana by the 
Mexicans, and used by them and the Indians as a remedy for catarrh." Schott. 

LowELLiA ABRBA, Gray, PI. Fendl. I. c. On the Limpia; Wright, Bigeloto, &o. 

CuRYSACTiNiA Mexicana, Gray, I. c. Hills of the San Pedro, Limpio, etc, Texas and New 
Mexico. 

NlcOLLETTA Edwardsii, Gray, PL Wright. 1, p. 119, t. 8, Gravelly plains, Presidio del 
Norte, Arroyo San Juan, etc.; Bigelow, Parry. Called '' Yerba Venado" by the Mexicans. 

Tagetes micrastha, Cav.; Gray, I. c, 2, p. 93 Cobre, Now Mexico ; Wright, Bigdow* 

CLAPPIA, Nov. Gen. 

* At Laredo, on the Lower Rio Grande, in August, 1839, Berlandier (as appears from Ihe remains of Iiis collections Lough 
from his widow) gathered a fow specimons of a Composito of doubtful affinity. Tho Bpcoimena wcic not numbered, and 
doubtless have not been distributed by him. It is to be sought on the lower part of tho Rio Grando. The plant appears to be 
the type of a. now genus, wliicii I dedicate to Dr. A. Clapp, of Now Albany, Indiana, one of Uie most zealous botanials of our 
Western Slates, and tho author of an important work, entitled '< A Synopsis or Systematic Catalogue of the Medicinal Plants 
of the United States, 1852. " 

Capitulum multifiorum, heterogamam ; ligulis fiemineis ; fl. disci hermaphroditie, coroUis tubulosia, limbo 5-fido. Involuerum 
imbricatum, pauciseriale ; aquamis laiis ovalibua obtuaissimis lineatis. Raceptaculum coiivcxiim, ep&leatum, satoBo fimbrilli- 
ferum. Anthersj ecaudatiB. Styli rami fl. herm. angusti, glabri,cono breviesimo obtujo suporati. Achenia eubangulata, 10-cos- 
tati. Papjus simplex, e sefis rigidis ecu paieis anguBtissiraig 20 — 25 hispido-senulatia, disci eorollam siibaequans. Herba 
ramosa, glabra, fbliis carnosis alteruis confertis iiliforinibus obsolete puroeque glanduloso-piinclatis, r^mis iluridia apicn nudis 
monocephalis ; lloribus ut vtdetur flavis. 

Claffii 5Uj;d«folij. — Herb a foot or mora in height, probably from a perennial root and fleshy stems, and with fleshy 
leaves much resembling those of Suasda or Chcnopodina maritima. Peduncles S ol 3 inches long, somewhat thickened above ; 
the head half an inch in diameter. Scales of the involucre consimilar, but the outer successively shorter, distinct, marked 
witliHCverai dark imprBSsed lines apparently of a glandular nature ; the margin narrowly aearioua. Fimbrillae of the receptaclo 
as long as the ovaries. Ligulos 10 or 12, linear, tri denticulate at tho apex Lobes of the disk-corollaa oblong-laneeolate. 
Achenia a line and a half long, truiicjte ut tiie broad summit, niinutefy and sparsely bispiil. Pappus lerrugineous, rigid, rather 



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94 UNITED STATES AND MEXICAN BOUNDARV. 

PoEOWiYLLUM MACROCEPiiALi'M, BC. J'rodr. 5, p. 643. Sonora, on the Sonoita ; Wright. Near 
Santa Cruz ; Thurber, 

PoROPHYLLUM Gbeggh, Grui/, PI. Wright, 1, p. 120. Dry hills, etc., southern part of New 
Mexico and adjacent districts in Chihuahua ; Wright, Bigelow, Captain Smith. On the Colorado 
of the "West ; Sckott. 

Podophyllum sooparium, Gray, I. c. On the San Pedro and Pucrcos, El Paso, etc.; Wright, 
Bifjelmo, Thurber. 

AoASsiziA SUA VIS, Gray <& Engelm. PI. Lindh. 2, p. 221), Grravelly hills, southern and western 
Texas, on Rock creek, etc. ; Parry, Bigdoio. 

GtAILLAKDIA pinnatieida, Torr. Common from Kock creek, the Pecos, etc., to El Paso, Cobre, 
etc. , New Mexico. 

G-AiLLARDid PULCHELLA, Foug.; ToTT. & Gray, I. c. Common from Texas to Sonora. 

Gaillardia lanceolata, Miclix. Eastern Texas, on the coast ; Sckott. 

Palapoxia linearis. Lag.; DO. Prodr. 5, p. 124. Diluvial banks of the Colorado, Sonora ; 
ScJiott. Fort Yuma, California ; Major Thomas. Chihuahua, east of Eio Santa Maria ; Schott. 

Palafoxia Hookbeiana, Torr. <& Gray, Fl. 2, p. 368. Valley of the Bio Grande below San 
Elizario ; Wright, Bigeloiv. Sand hills, Medanos ; Thurber. 

Palafoxia Texaka, DG. Prodr. 5, p. 125, Texas from San Antonio to Eagle Pass. Los 
Moros, New Mexico ; Bigeloto. 

Palafoxia callosa, Torr. & Gray, I. c. From tlie Guadalupe river, Texas, to the Pecoa. 

Florestina triptbris, DC. Prodr. 5, p. 655. On the Pecos, Escondido, etc.; Bigdow, Wright, 
Par>-y. 

Oiijbnactis tbnuibolia. Mutt.; Torr. d Gray, Fl. 2, p. 3T0. San Diego, California ; Tkurbar, 
(a pretty large plant, a foot high,) Schott, (a small form, only 3 or 4 inches high.) 

Chjenactis STEVI0IDE3, Hook. d Am.; Gray, PI. Wright. 2, p. 94. Hills, near Camp Fillmore, 
New Mexico ; Bigelow, Wright, Cooke's spring, New Mexico; Thurber. 

Ch.^nactis carpuoclinia {sp. nov.): annua? lanuloso-pubescens, mos glabrata, subviseosa; 
caule ramosisairao ; foliie 1-2-pinnatipartitis, segmentis parvis linearihus (1-3 lin. longis); 
capitulis subcorymhosis ; involucro viscoso ; coroUia albidis ? radii limbo ampliato eed regulari 
diseum baud superantibus, pappi paleis 4 ovato-lanceolatis acuminatis ; receptaeulo paleis 
nonnuUis setaceis involucrum aequantibus inter flores onuato. — Gila and Colorado desert ; Schott. 
Fort Yuma, B, California ; Major Thomas. Plant 4 to 9 inches high, resembling slender forms 
of C. stevioidea. Heads coryrabose-panicled, half an inch long, on short and slender peduncles, 
12 — 25-flowered. Involucre either glandular-viscid or hirsute with viscid hairs. The remark- 
able peculiarity of the species consists in a set of liliform or setaceous persistent paleo3 on the 
receptacle, 5 to 10 in number, subtending as many disk-flowers ; but in every other respect the 
plant is a true Chrenactis. 

HifMGNOPAPPiis LUTEUS, Nutt.; Gray, PI. Fendl. p. 97. Stony hills, Cobre, New Mexico ; 
Bigeloiv, Wright ; and Minibres ; Thurber. Guadalupe caiion ; Captain Smith. Cordilleras 

longer tlian tho aclienium ; the bristios, or rather ariatiform paleie, consiniilat, except that a fiiW are anifillcr, tapering upwards, 
simple, but all more or less coherent !it tho very base, ao that they fall oft' in a ring. There are faint indications of some dark 
glanda on the foliage, which, if conlirmeil in better speciir.cns, may justify a reference of the genus to the Tageiinuie, in wiiich 
case it would inalie hs perfect a transition between Ihul subtribc and the lieleniens as another genus of tho sarno region 
(Saiiweliia) dues betwceji the latter and the FlavetieiE- 



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BOTANi'. 95 

behind San Diego; Parry; (a somewhat glabratc form,) Nnttall's original specimens are 
depauperate and not fully developed ; they gave rise to the unfortunate phrase " heads small," 
in the Flora of North America, But, in fact, they are perhaps the largest of the genus. The 
conspicuous pappus at length projects beyond the villosity of the achenium. 

Hymenopappds plavescbns, Oray, PI. Fendl. I. c. Common from the Pecos to El Paso, etc. 

Htmenopappos corymbosus, Nutt.; Torr. <£ Gray, Fl. 2, p. 370, and var.? Nuttallii, On the 
San Pedro and Rio Grande, etc., Texas ; Bigdoto, Scholt. 

AcARPH^A ARTEMJSiAEFOLiA, Harv. d Gray, in PI. Fendl. p. 98, in iwt. (Tab. XXXII.) 
Cordilleras east of San Diego, California, June ; Parry. This rare plant was known only from 
a specimen in Coiiltcr's Californian collection, No. 313, which presented no mature fruit. Dr. 
Parry's specimen is also a single one, (more suo,) hut with well-formed fruit. The only points 
to he added to the original account of the plant are that the viscid-glandular leaves are scarcely, 
if at all, hoary ; the corollas appear as if they were flesh-color rather than pale yellow, and 
the marginal ones are hardly ampliate ; the mature achenia, all fertile and similar, are slightly 
incurved, compressed, and not manifestly striate. The compression of the achenia tends to 
coniirm the genus as distinct from Ohfenactis, although the numerous analogous cases in this 
Bubtribe warn us to beware of genera resting solely on the absence of pappus. Vide, Plantae 
Wrightiance,!, p. 123. 

Bahia (Eriophyllum) artbmisi/EFOlia, Less.; DO. Prodr. 5, p. 567. Monterey, etc., Cali- 
fornia ; Parry. A shrubby plant, 2 or 3 feet high. 

Bahia (Eriophtllum) tkieida, NuU, in Trans. Amer. Phil. Soc. 7, p. 374; Torr. cb Gray, I. c. 
Dry sandy hiHs, San Diego, California ; Parry. 

Bahia (Eriophyllum) cosfbrtiplora, DO. I. c; Torr. & Ch-ay, I. c. Dry places near Santa 
Barbara, California ; Parry, etc. From San Diego to the Colorado ; ScJiott. 

Bahia eubblla (sp. nov.) : annua, pumila, floccoso-lanuginosa, ramosa ; pedunculis snb- 
corymbosis monocephalis ; foliie alternis spathulatis apice sapius tridentatis ; involucro eam- 
panulato 8-phyllo lanuginoso, squamis erectis discum adtequantibus ; ligulis 8 roseis ovalibus 
3-4-dentatis ; appendicihus styli fl. disci cono acutissimo superatis; receptaculo conico; acheniis 
hirsutulis ; pappi paleis 8 enerviis obtusissimis. — Interior of California, in a dry valley, near 
San Felipe, (between San Diego and the Kio Colorado;) June; Parry. Plant 4 inches high; the 
leaves half on inch long. Peduncles from half an inch to an inch in length. Involucre 3 lines 
long. Disk-flowers 14-20, yellow. Ligules oval, deeply notched or 3-4-toothed at the 
apex. Pappus about one-quarter the length of the prismatic achenium ; the paleae of equal 
length, four of them obovate-oblong, the alternate ones narrower and more spatulate, entire. 
"With the style of true Bahia, but the appendages tipped with a longer and sharper cone, this 
little plant has the involucre of the section Eriophyllum, and a still more elevated (even 
conical) receptacle ; and so tends to combine the two. In the rays, which are said to bo pale 
purple and white, it accords with the obscure B. trolliifolia, of which it is jirobably a true 
congener. 

Bauia A135INTIIIFOLIA Benth.,\a,v. DSALBAHA, Gray, PI. WrigJil. 1, p. 121. Sandy or gravelly 
soil, from the San Felipe to the Mimbres, and south to Chihuahua, etc. 

Bahia biternata. Gray, PI. Wright. 2, p. 95. Ojo de Gavilan, etc., New Mexico; Wright 
Thurher, Bigeloiv. Llanos del Babuquibari, Sonora ; Schott. 



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S6 UNITED STATES AND MEXICAN BOUNDARY 

Bahia pedata, Gray, PL Wright, 1, p. 123. On the Peeoa, Limpia, eto. ; Tkurher, Wright. 

Bahia (Achyropappus) BiGBLOvn (ep. nov.) : annua, atriguloso-piilierula ; caulibus gracilibua 
diffuse ramosis ; foliis oppoaitis tripartitie, segraeotis integerrimis vol inferiorura 2-3-fldJ8 
lineari- fill form ibus ; pedunculis fiiiformibus monocepiialis ; involucri laxi squamis 8-^ oblongo- 
ovatia obtuse acuminatis glandnloao-pubescentibus ; ligulis totidem oblongis ; acheniia basi 
hirsntniis ; pappi paleis 8 obovatis obtnsisaimis enerviis tubo corollas disci viscoso-hispido fere 
dimidio brevioribue. Valley of the Limpio, W. Texas, July, 1852 ; Bigehio. Stems 
branched from the base a foot or more in height. Leaves sliort-petioled ; their divisions 6 to 12 
lines long. Peduncles solitary, 3 or 4 inches long. Involucre scarcely 3 lines in length, a 
little shorter than the disk. Flowers yellow ; those of the disk as many as 30 ; their corolla a 
line and a half long ; the slender and glandular-hispid tube abruptly dilated into the cyathiform 
5-lobed limb. Style as in B, ambrosioides. Achenia linear-clavate, obtusely tetragonal, nearly 
a line and a half long. This is nearly related to the Schkuhria? Neo-Mexicana, Gray, PI. 
Fendl. p. 96 ; which, however, is rayless and has disk-corollas scarcely longer than the pappus. 
"While on the one hand it is plainly a congener of Achyropappus schkuhrioides, Link tfe Otto. , 
(which in specimens from De Candolle and others, contrary to the generic character, taken from A. 
anthemoides, has a pappus very much shorter than the corolla,) on the other it is equally insepa- 
rable from true Bahia (B. ambrosioides, B, absinthifolia, etc.) I am unable to say exactly how 
the various species are to be divided between Bahia and Schkuhria ; but apparently all the 
many flowered ones must be excluded from the latter. 

Amblyopappus posillus, SooIc. (& Am. in SooJc. Jour. Pot. 3, p. 32J, (vide Gray, PL Wright, 
Ijp. 123, in adn. & Bot. WhippL Eep. p. 106.) Infantea Chilensis, Bemy, in Gay, FL GhU. 
Aromia tenuifolia, Nutt. in Trans. Amer. PhU. Soc, 1, p. 395. Monterey, California, near the 
seaside, forming dense clumps ; Parry. 

ViLLANovA ciiRYSABTHEMOiDES, Gray, PL Wright, 2, p. 9G. Cobre, Kew Mexico ; Bigelow, 
"Wright. 

SciiKUHBiA HoPKiEKiA, Gray, I. c. Sonora ; Wright. Seeds only were collected, I'rom which 
plants were raised for two seasons. 

Schkuhria Wrightii, Gray, I. c. Sandy soil, between Babocomori and Santa Cruz, Sonora ; 
Wright, Thurber. 

Amblyolepis sbtigeka, PO. ; Gray, I. c. Plains of Texas, from the Leona to the Pecos and 
Eagle Pass ; Bigelow, Wright, Scholt. 

Riddellia taqetina, Nutt; Torr. in Emory, Pep. t. 5. Texas to Sonora; common on the 
frontier, 

KiDDELLiA arachnoidea. Gray, PL PendL p. 94, d PL Wright, 1, p. 121. Common on the 
Rio Grande, etc., from the Nueces (where it was also gathered by Berlandier, No 1U41, 2471) 
to the Mimbres, etc. 

Hymknothrix Wislizesi, Gray, PL FendL L c. Mule Springs, etc. , New Mexico, and Sonora ; 
Bigelow, Wright. 

Hymehothrix? Wrightii, Gray, PL Wright, 2,^.97. Sonora; Wright, Schoit, Bigehto, 
Thurber, mostly in the mountains. New Mexico, at the Cobre, Organ mountains, etc.; Bigehio. 

AcTisoLEPis MDLTiOAULiB, BC. Prodr. 5, p. 655; Torr. cfe Gra>j, FL 2, p. 376. (Tab. XXXUI.) 
Dana's Ranch, below San Luis Obispo, California ; Parry. 

BuERiELiA LANOSA, Gray, in Bot. WMpp. Rep. p. 107. Sonora, between Tucson and the Gila ; 
Parry. Pappus of 4 long and 4 short palete in the disk-flowers, but of five each in the ray. 



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BOTANY. 97 

BoRRrEUA GRACiMS, DO. Prodr. 5, p. CM. California, near Monterey, etc.; May ; so abundant 
as to give a yellow appearance to the hills ; Parry. Mostly rather large forms. In one specimen 
a slight disposition to have lobes to the leaves appears, 

BuRRiELiA oiiRYSOSTOMA, Torv. d Gray. Fl. 2, p. 379. Hill sides, common from Monterey to 
San Diego, CaHfornia. The specimens occur mixed with the preceding, from the larger forma 
of which they are externally undistinguishable. Unless the more obtuse receptacle affords a 
character, it will probably come to be regarded as only an epappose state of B. gracilis. 

BuRRiELiA PLATYCARPHA (sp. hov.) : en cta, spitham^a, subramosa, laxe pubescens ; foliis sfB- 
pissime trifidis segmentiaque flliformi-Iinearibua ; pedunculis sursum incras-atis ; involucri 
multiflori squamis ovatis trinerviis ligulisque oblongo-linearibus stepius 7 ; corolla imberbi ; 
pappo conformi e paleis 7-8 oblongo-ovatia aristatis achenio eequilongis ; receptaculo acute 
conico.— Valley of the upper Sacramento ; Dr. Snllman. This is a gennioe Burrielia, having the 
paleai of the pappus all alike and awned. The scales of the involucre (fully 4 lines long) and 
the Jigules are considerably larger than those of the largest states of B. gracilis and B. (Baeria) 
chiysostoma, although fewer. It is related on the one band to B. gracilis, from which it is a 
once distinguished by its lobed leaves, stouter peduncles, more upright habit, fewer rays and 
invoiucral scales, the latter much broader as well as larger, 3-nerved and more pointed, and by 
the equally larger and broader as well as more numerous palcaa of the pappus ; on the other to 
B. (Dichata) Fremoatii, which has much smaller heads, a dimorphous pappus of much smaller 
paleje, etc.* 

BuRKiELiA (PTiLOMERrs) ANTHBMOiDES. Ptilomeris autliemoideSj Nutt. in Tmns. Amer. Phil. 
Soc. 7,i). 382. Hymenoxya (Oxypappus) calva, Toit. rf; Gray, Fl. 2, p. 381. Grassy places, 
Monterey, California; Parry. 

Lasthenia (Hologymnb) glabrata, Lindl Bot. Reg. i. 1780. Monterey, California ; Parry. 

MoNOLOPiA MAJOR, DC. Prodr. 6, p. 74. Argillaceous hills, San Fernando, beyond Los 
Angelos, California {a glabrate form) ; Parry. 

TEICHOPTILIUM, Nov. Qea. 

Capitulum homogamum multiflorum ; floribua hermaphroditis tubulosis. Involucrura circiter 
10-phylium, biseriale ; squamis requalibus membranaceia, interioribus glandula apiculatia. 
Eeceptaculum nudum, scrobicnlatum. Corolla cylindrica ; tubo proprio brevi angusto, dentibua 
5 patentibus ovatis. Antherse ecaudafaj. Styli rami compreasi, glaberrimi, apice taatum capi- 
tellato-tnmcato brevissime hirtelli. Achenia immatura oblonga, basi angustata, hirsutissima. 
Pappus corolla brevior, e paleis 5 byalinis enerviis oblongo-lanceolatis in setas plurimas rigidas 
profunde fisaia. Herba nana, hyemo-annua vel biennis, dichotoma, humifuaa, floccoso-lanata, 
subglandulosa ; foliis alternis euneato-oblongis argute ineiso-dentatis lobatisve, dentibus cuspi- 
dftto-acuminatis ; pedunculis terminalibus et alaribus filiformibus monocephalis ; corollis oehro- 
leucis ? 

TEicnoPTiLiUM INCISUM, Gray, Mss. ; Torr. in Pad/. B. Boad Expl. 6, p. 361, (. 5, Psatliy- 
rotea incisa, Gray, PL Thurb&r, p. 322. On the desert of the Colorado, in the southeastern 

= rt may be rtmarked that Mr. Bentham vefeiB No. 1791 of Hartweg's Califoriiiiin collection to Burrielia (Diclirctn,) Pre- 
montii; Tint jill the specimma in my set are entirely dcatitutoof pappus, whieli could not have Leentlie case lu those wiiicli 
Mr. Bealham examineJ. Since the two plants apparently agree in all other partioulare, it is most likely that my epeciniens 
belong to an epappose state of the speotes ; just as all Nuttall's species of Ptilomeris aie probably forms of one. At any 
rate, it is now cerfain that Ptilomeris and Dicheefa, as well as Keria, must be reduced to sections of Burrielia. 
13 k 



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98 USITEn STATES AND MEXICAN IJOUXDAKY. 

part of California, near the Colorado ; Thurher. Near Fort Yuma ; Lieut. Bu Barry. Only 
a single specimen of this interesting plant (but in a more advanced state than Mr, Thurher'g) 
was gathered by Lieut. Du Barry, and communicated to Dr. Torrey. The latter pointed out 
the oversight I had committed in respect to the pappus, and which led rae wrongly to refer the 
plant to Psathyrotes, whereas it technically belongs to the Heleniete, and adds another genus 
to that subtribe. The five thin palese of the pappus are beautifully dissected into stiff capillary 
bristles, of which the central one is somewhat the longest, and the rest on each side successively 
shorter. Involucre loosely very woolly externally ; the thin and lax scales oblong and oblong- 
lanceolate, nerveless, and about as long as- he disk. 

riULSEA, Torr. & Gray, (Nov. Gen.) 
Capitulum multiflorum, radiatum ; floribus radii ligulatis fcemineia, disci tubniosis. Involii- 



crum hemisphfericum ; squamis subtriseriatis membranaceis laxis, extimis pauUo brevioribni 
Keceptaculum planum, epaleacenm, alvcolato-dentatum, dentibus brevibus corneis. Ligul^ 
20-30, lineares. Corolla fl. herm. tubo gracili viscoso-glanduloso, fauce cylindracere, limbo 
5-denfato, dentibus triangulari-ovatis fere glabris. Anther^e ecaudafre. Styli rami obtusi, 
longitrorsum puberuli, exappe adieu] ati, Achenia conformia, linearia, subtetragono-compressa, 
deorsum attenuata, villosa prtesertim ad margines. Pappus (villis achenii vix longior) e paleia 
4 tenuibus hyalinis enerviis latis obtusissimis erosis vel fimbriatis. Herbfe perennes, viscoso- 
pubescentes, macroceplialse, alternifoliie ; caule florifero aub-apbyllo ; floribus flavis. 

H. Califobhica {Torr. & Gray) : elata ; caule vel pednnculo 3-7-cephalo ; involueri squarais 
lioearihus apice attenuatis ; floribus aureis ; ligulis sjepe filamentis sterilibus inatructis ; papp^ 
paleis cuneato-rotundis apice truncate eroso-dontieulatis. — Mountains east of San Diego, Cali- 
fornia, in bushy places, June ; Parry. A portion of the inflorescence was alone gathered of this 
interesting plant, apparently a branch of a tall herb, with the alternate leaves reduced to ovate- 
lanceolate and sessile bracts, of about half an inch in length. The paniculate or subcorymhose 
heads are about as large as those of Arnica montana. Ligules half an inch long. Disk-flowers 
perhaps 100. Achenia 3 lines long, blackish, minutely striate on each face, also villous (but 
much more so on the margins) with long and thick hairs. Pappus of four nearly equal, thin, 
and hyaline pale^, of less than a line in length, much shorter than the tube of the corolla. 
Foliage, etc., unknown. The genus is dedicated to G, W, Hulse, M. D., of Louisiana, late a 
surgeon of the United States array, and a zealous cultivator of botany, to whom we are indebted 
for many interesting plants of Florida, California, etc. Since its establishment upon a single 
and incomplete specimen, a second species has been detected by Dr. Newberry (H. nana, Gray in 
Pacific R. R. Report, &,p. 76, t. 13,) confirming the genus. The broad and flat receptacle and 
the elongated compressed achenia are remarkable in the Heleniete, subdiv. Euheleniefe, to 
which the genus is to be referred. 

HjiLBNiUM AUTUMNALE, Jjinn. Texas ; west to the San Pedro ; Bigelmv. 

Helenium fujebclum, DQ. Prodr. 5, p. 667 ; Torr. dt Gray, Fl. 2, p. 385. California ; not 
uncommon. Rio Fronteras, Sonora; Thurber. 

Helenium tbscifolium, Nutt.; Torr. & Gray, I. e. Sonora ; Cu23t. Smith. 

Helenium MicaocEPHiLUM, DC. I. c. Sandy moist places, Presidio del Norte, Van Home's 



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BOTANY. 99 

Wells, etc., Blgeloio. This species uicliidesDe Candolle's H. elognna and Ijis H. heteropViylliim, 
at least in part, viz; No. 2113 of Berlandier's collection, which is from lieynosa. De Candolle 
also cites Berlandier's No. 107 and No. 190, and the habitat Tampico. I have no specimens 
from that station. From these the character, " pappi paleis hreviter aristatis," may have heen 
drawn. But in those from Reynosa the palere are very obtuse and pointless, just as in H. mi- 
crocephalum. 

AcTiNELLA BrcuAKDsoNir, Nutt. ; Gray, PI. lcndl.,p. ]01. New Mexico and western Texas, 
abounding on stony hills, 

AcTiKELLA ODORATA, Gray, I. c.,& PI. Wright. I. a. From the lower Rio Grmde to Sonora, 
the Gila, etc.; Parry, Bigdow, Schoit. "Limonillo" of the Sonorians. 

AcTiNELLA CHRYSANTiiEMOiDES, E. B. K.; Gray, PI. Wright. 1, p. 122, adn. Soccoso, Sonora ; 
Pigeloio. 

AcTiNELLA SCAPOSA, NvM.; Gray, I. c, & in Bot. Wkippl. Rep. p. 108. Gravelly or rocky 
hills, throughout western Texas and New Mexico ; in diverse forms. 

ACTINELLA ARGENTBA, Gray, PI. Fendl. I. c. On the Mimbres ; Bigehio, Br. Henry. 
ACTINELLA BiGELOVii, Gray, PI. Wright. 2, p. 96, adn. New Mexico, on Ben More, and near 
the Oobre, etc.; Bigdow, 

ACTINELLA LiNBARiFOLiA, Torr. & Gray, Fl 2, p. 382. Western Texas to El Paso and Eagle 
Pass, etc.; in various forms, 

Tridax b:color, Gray, PI. Fendl. p. 104. Bachimha, Chihuahua; Thurher. Plant taller 
than the specimens of Wislizenus, a foot or two high ; the upper leaves alternate and on pretty 
long petioles ; head larger than in T. procumhens ; rays rose purple ; pappus not tinged with 
purple. 

Galiksoqa parviflora, Cav. ; var. Cabacasana, and var. semicalva ; Gray, PI. Wright, 2, p. 
98. Cobre, New Mexico; Wright. 

AcHYRACHJENA MOLLIS, Schaucr; DC. Prodr. 1, p. 292. Monterey, California; in grassy places ■ 
Parry, eto 

Layia (Callichroa) PLATYGL0S3A, Graij, PI. Fendl, p. 103, California, San Pasfiual; Thurher. 
Monterey, etc.; Parry. Colorado desert ; Scliott. 

Layia (Calllachyris) Fremontii, Gray, PI. Fendl. I. c. Upper Sacramento, California ; Dr. 
Stillman. 

Layia (Madarogloesa) heterotricha, Rook, d Am. Bot. Beech.; Gray, I. c. Dana's Ranch, 
below San Luis Obispo, California; in dry gravelly soil ; Parry. 

Layia (Madaroqlossa) iiieracioide,s, Book. & Am. I. c. San Juan Battista, near Monterey. 
California; Parry. Remarkable for its very short rays. 

Layia (Madaroglossa) caenosa, Nutt. in Torr. <& Gray, Fl. 2, p. 394. Sea beach, Monterey, 
California ; Parry. The very small rays appear to be white. 

Layia (Madaroglossa) Neo-Mexicana, Gray, PI. Wright. 2,^.98. Neiv Mexico; Bigelow. 
Tucson, Chihuahua ; Parry. The pappus is not always present in the ray-flowers. 

OxYUEA CIIRY3ANTHEM0IDBS, DO. Prodr. 5, p. 693. Monterey, California ; May ; on grassy 
bill sides. 

Hemizonia PAScrcuLATA, Torr. & Gray, Fl. 2, p. 397. Ilartmannia fasciculata, DO. Prodr. 
5, p. 693. Dry plains, San Diego, California ; Pai-ry, Schott, Thurher. Covers large tracts, and 
exhales a strong balsamic odor. 



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100 UNITED STATES AND MEXICAN BOUNDARY. 

Hemizonu eamosksima, Bentli. Bot. Voy. Sul^h. p. 30. Santa Barbara and San Diego, Cali- 
fornia; ScJiott, Fitch. This appears to be a common Californian plant, of somewhat variable 
mode of growth. Mr. Fitch's specimen is the same as Fremont's, marked R and S in his coll. 
of 1846 ; as No. 361 of Coulter's Californian collection ; and as the H. fascicuktta of Nuttall, in 
herb. Hook ; (of Gambell's collection, a stricter and smoother form) ; I believe it is also Bentham's 
H. ramosissima. The sessile or stipitate glands are sometimes abundant, but not rarely wanting 
or nearly so. I may remark that to H. an gustifolia, DC, (which has no pappus at all, at least 
in Douglas's specimens,) belongs the H. multicaulia, Sook. d Am Bot. Beech. Voy. Suppl., p, 
355 ; the No. 305 of Coulter's Californian collection; H. decumbens, Nutt. Fl. Gamb.p. 175; and 
apparently the same as specimens gathered near Moi;terey by Mr, Barclay, although their disk- 
flowers show a minute pappus. But Ko. 1T9T of Hartweg's collection, referred by Mr. Bentham 
to li. angustifolia, is exactly H. corymhosa (Hartmannia corymbosa, DC.) H, macrocephala, 
Nutt. PI. Garni. I. c, appears to he the same species. H. congesta, DC, is to he distinguished 
from Madaria chiefly by the shape of the fertile achenia ; as noted in the Botany of Whipple's 
Eeport.* 

Calycadehia (Osmadgnia) tenella, Torr. & Gray, Fl. 2, p. 402. Osmadenia tenella, Nutt. 
Dry places near San Diego, California; Parry, etc.; June. Subjoined are the characters of 
two new species, from Fremont's Californian collection of 1846. t They belong to Nuttall's 
Osmadenia, but have the glands of Calycadenia on the floral and young fascicled leaves, and 

"Besides H. Fitcliii, reeenlly published in Whipple's Report, there is another extreinelj ne!l marked species of Homiioiiia n 
Colonel Premonts collection, the cimractere of which are subjoined ; 

HEMiZOBii YiRGATi (sp. nov.) : B'.ibglabra ; caulibus e radice annua romiave siinplicibut gracilibQs ; foliis linearibua, inferi- 
oribus inciso-dentBtia basi longa attenuatis, superioribus inlefierrimis, aummis mmimis apice gland uluso-truncntis ; capitulis ob- 
longif'in asillis solitsriis Eubeeseilibus vel plerumque ramuloa bravts folioBOS desinentibus racemuni virgatum efficientlbus ; invol- 
uori squam's circiter 5 ovatis memhranaceis cum paJeis estimis raceptacnii glandulis elipitotis; mollibua dorso maricatis ; floribuB 
ut videtur luteis, radii 5 ligula cuneato-rotunda apice irilobo, disci 10 stetilibus, eingulie palea oblonga gland uloso-mucronila 
amplexatis epapposis ; achaniis radii fertilibus obovatis lavibus basi substi pi talis apice intua breviter rostratis.- California, prob- 
ably on the Sacramento; Col. fremonf.— Stems a foot or more high . Lower cauline leaves two inches long, the upper ojiea an 
inch or less in length and barely a line wide ; thoKe fascickd in the a^ila or crowded on Ihe floral hranchleta 1-2 lines wide, 
apreadiiig ; their Iruncale apex glandular. Heads 3 lines long. Scalea of the involucre ovate, cymhiform, half Inc'oaing the 
fertile achenia, glahroua, besot externally with long and soft glandular-tipped but truncate apreading processes. Ligules 2 lines 
long and Ihe same width, on a glandular tuba of a line in length. Disk-flowers slightly glandular, their infertile ovaries glab- 
rous, destitute of pappus. Receptacle ehaffy thonghout ; the paleai distinct, membranaceoua . 

t Cii-TCADEiJia Fremomtii (sp. nov-): caule humili superna farce paniculato-ramoEO et hirsuto ; foliia angUEtc liiiearibus Bca- 
brisbasi aetoso-hispidis, caulinlseglandulosis, floralihus apice atepa glandulara claviformem bresiter sHpitatam gerentibns ; capitulis 
Eolitariis tarminalibus aiiliaiibusque subsessillibus ; liguJia S-7 tripattilia, segmentis lubulo brevisainio glabra 2-3-plo iongi- 
oribus - disco circiter aO-floro ; palcis teoeptaculi 19 et ultra oblongia obtusis vix glutinosis connatis; lobia corollarum disci ovatis ; 
achenii's radii lievibus utrinque obtusia, disci hirsutulis pappo 10-paIeaceo (paleis alternis subulalo-produetis) aequilongis,— Cali- 
fornia, (the particular station not recorded ;) Col. Frtmont. Stems a span high, from an annual root, erect, rather slender ; the 
branches are not glandular nor glutinous. Cauiine leaves an inch or more in length, the lower opposite. Heads few, larger, 
and with many more flowers than in C. tenella ; also with much ampler ligules, (though the tubular portion is very much 
shelter,) their obovate or oblong segments 3 lines long. Nor are the tinged and perfectly smooth and even raj achenia at all 
apiculale at either end. The pappus of the (apparently fertile) diskachenia resembles that of C. tenella, its longer and subulato 
scales being only half the length of tha corolla, and not longer than the achenium itself. 

Caltcadenia paocifloba (fp. nov. ) : caule paniculato-ramoso glabello ; raniis floriferis difl'usiE filiformibas flexnosis capitula 
solitaria subsesailia ad nodoa aingulos gerentibns ; foliis anguste linearibus eeabria inferne setoso-ciliatia, floraiibus cum lis in 
axillisfasiculatisbrevibuaglanduluclavifo. mi sniieratis; radio uni-ligulato,lobislisul«.lriparlittetubuloduplolongioribus; disco 



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BOTANY. 101 

OT]e of them haa short and broad lobes to the corolla of the disk. The glanda are manifestly 
not of generic importance ; and as in habit there is no longer a marked distinction, it will he 
evident, on comparing the characters of C. Fremontii with those of the two new Hemizonite 
above described, that it is becoming increasingly difficult to preserve Calycadenia as a genus, 

Laoophylla diohotoma, Benth. PI, Hartw. p. 31T. On the Sacramento, California ; Rev. Mr: 
Fitch. Branchlets only ; rays evidently yellow. The genus is distinguished from Hemizonia by 
the obcompressed fertile achenia, completely enclosed by the involucral scales, and by the cunei- 
form, deeply trifld rays. The habit also is peculiar. Yet, perhaps, it may be found to pass 
into Hemizonia ; though it is more distinct than Calycadenia. 

Lagophylla FiLirBS, Gray in Bot. WMppl. Hep. p. 109, adn. Hemizonia lilipes, Hooh. dt Am. 
Bot. Beech. Voy. Suppl, p. 356. On the Sacramento, California ; Uev. Mr. Fitch. The specimens 
are merely in flower. I suspect that in the achenia, no less than in other characters, as well as 
in habit, the plant will accord with Lagophylla, and thus raise that genus to three known 
species. The receptacle is not chaffy in the centre. The small rays are three-parted nearly to 
the base. 

Madia sativa, Molina. In springy places, California, near Monterey ; April. 

Harpjecarpus exiguus : tenellus, diffusus ; iiedunculis iiliformibns ; paleis receptaculi 3 in 
cupulam florem hermaphroditum includentem coalitis ; acheniis baud rostratris. — Sclerocarpus 
exiguus, Smith in Uees Gycl.; Hooh. d Am. Bot. Beech, Voy. p 355, adn. California, (probably 
Mariposa county,) Eev. Mr. Fitch. Plant 2 to 4 inches high, including the fruit-bearing peduncles 
(which are an inch or more long); the branches diffuse. Root annual. Leaves from a quarter 
to half an inch long. Heads little over a line long, with 4 to 7 ray-flowers, and a single 
hermaphrodite one, which is inclosed in a cup formed of only three palea. Besides this character, 
and the diminutive size and diffuse habit of this plant, it differs from H. madarioides, Nutt., of 
Oregon, in the lees falcate ray-acbenia, of barely a line in length (only half the size of those of 
the other species), the apex of which is obtusely apiculate, but not at all rostrate. H. madarioides 
has, when young, a simple and strict stem, leaves of one or two inches in length, and, according 
to Nuttall, sometimes attains the height of 2 feet, 

CoiNOGYNB CARNOSA, Less.; DC. Frodr. 6, p. 42. Salt places and seashore near San Diego 
California ; Barry. The genus should stand next to Jaumea, in the Helenieie, from which it 
differs principally in the want of the pappus, 

Baileya pauciradiata, Barv. & Gray, in PI. Fendl. p. 105. Diluvial banks of the Colorado, 
Sonora ; February, 1855 ; Schott. These are the only specimens of this plant I have seen, 
exce])ting the original ones in Coulter's collection. They possess the lower cauline and radical 
loaves, which are pinnatifid, with icw and unequal linear lobes, some of them 1-2-tootbed or 
lohed. The root is that of a biennial or winter annual. 

Baileya pleniradiata, Earv. d Gray, I. c, d PI. Wright. I. c. Very common from the Rio 
Grande to the Colorado, Sonora, etc. 

tripdeato Irifloro, corolliB 1 obis oblong is ; achenio radio IrovL obtuso.iisdiad IiirsHUilispappo lU-paleaceo (paleis altornis siibulato- 
produclie) lougioribus — California ; Col. Fremont. Tliis species prtEcnts nearly the liabit of C. tenolla, eieept tlial tlio pro- 
longed branches are simple or Epatingly forked, and bear tateral nearly sessile beads ; and they are scarcely, if at all, glandular 
or viscid. The heads are still smaller, or at least narrower, end, as far as examined, have utiformly only one ray and throB 
disk flowers ; the latter surrounded by a ciip formed of tbe thin coaleecent p^leie. Pappus nearly as in C. Framuntii. Ray- 
adiciiiium rather acute at Uic baLe, but the summit not at all apiuulatc. 



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Bailbya mdltiradiata, Harv. d Gray, I c; PI Wright. I. c. Sandy places, with the same 
range as the foregoing, which may probably pass into it. 

Matricakia DrscoiDBA, DC. Prodr. 6, p. 51 ; Torr. cb Gray, Fl. 2, ^. 413. A common weed 
in the streets of Monterey and elsewhere in California, appearing as if introduced ; Parry. 

Achillea Millefolium, Linn. Cobre, New Mexico ; Bigeloio, Wright. 

Varilla Texana, Gray, PI. Wright 1, p. 123. Plains and grassy places near Eagle Pass on 
the Eio Grande; Bigelow, Parry, Tlmrher. 

Artemisia Oalifornica, Less. in'Lmncea, 6, p. 523. 8an Diego and San Luis Eey, California, 
where it abounds exceedingly ; Parry, eic. 

Artemisia deacuncxiloideh, Pursh; Gray, PI. Wright. I. c. Hills at the Cobre, New Mexico ; 
Wf-ighf, Bigehw. On the Pecos, Texas ; Thurher, 

Ariemisia Cahadknbis, Michx.; Ttyrr. & Gray, Fl. 2, p. 417. With the last. 

Artemisia filifolia, Torr.; Torr. & Gray, I. c; Torr. in Marcy Rep. 1. 12. Common in bottom 
land, from below El Paso to the Cobre, etc. 

Artemisia Ludoviciana, NuU.; Torr. d Gray, I. c. Very common, and in various forms ; 
including A. Donglasiana and A. Mexicana. 

Gkaphalidm CALiPORNicirM,,_Ca Prodr. 6, p. 224. San Diego, California; Thurher. 

Gnaphalidm ldteo-album, Linn. Sandy low places, from the Nueces and Kio Grande, Texas 
to Sonora. 

Gnapualitjm Speengelii, Hool. t& Am.; Gray, PI. Wright. l,p. 124, <& 2, p. 99. Hills, etc., 
from the Lirapio, Cobre, etc., to Sonora and California. 

Gnaphalidm leucocephalum. Gray, PL Wright. 2, p. 99. Bed of mountain torrents, near 
Santa Cruz, Sonora ; Wright, Thurher. 

Gnapiialixim mtcrocbphalum, Nutt? Gray, PI. Wright. I. c. Cobre, New Mexico; Wright. 

Gnaphauum palustre, NulL; Torr. dt Gray, 2, p. 427. California ; Eev. Mr. Filch, etc. 
On the Colorado of the West; Schott. 

Antennaria dioica, Ga^tn. Cobre, New Mexico ; Bigelow. 

Filago Californica, Butt.; Torr. <& Gray, I. c. San Isabel, California; Thurher. On the 
Sacramento ; Bev. Mr. Filch. 

Crocidium multicaule, ffook. Fl. Bor.-Amer. 1, t. 118. On the upper Sacramento, California 
Dr. Stillman. 

Arnica discoidba, Benth. PI. ffattw. p. 319. Monterey, California, in woods and ravines 
May ; Parry. A form with even the upper leaves all opposite or nearly ao. 

Baktlettia scaposa, Gray, PI. Thurher, p. 323. On a prairie near Corralitas, Chihuahua 
August; Thurher. 

PsATUTROXGS ANNUA, Gray, PI. Wright. 2, p. 100, tfe PI. Thurher, p. 323. Bulbostylis 
(Psathyrotes)>nnua, Nutt. PL Gambell. Tetradymia (Polydymia) ramosissima, Torr. in Fmory, 
Pep. p. 145. Colorado desert, California ; Schott. Big-horn mountain, on the Gila ; Thurher. 
"Flowers bright yellow. Poliage aromatic." 

PsATHVROTES SCAPOSA, Gray, PL Wright 2 p. 100, t 13. Gravelly hills near Ei Paso, and 
Santa Maria, Chihuahua ; Wright, Bigeloto. Kioway crossing of the Rio Grande, near the Chisos 
mountains; Parry. 

Haploesthbs Greogii, Gray, PI Fendl. p. 109. Along the Efo Grande below El Paso; Parry, 



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BOTANY. ]03 

Bigeloio. The accessory nerves are wanting in the disk-corollaa of Dr. Bigelow's specimens, 
and the rtiys are narrower and entire, not three-toothed as in Gregg's. 

Senecio multilobatds, Torr. & Gray, in PI. Fendl. p. 109. Monterey, California, May ; Parry. 

Seseoio Coeonopus, Nutt.; Torr. <& Gray, Fl. 2, p. 43T. San Luis Eey, February, on dry 
hill sides ; Parry. 

Sbnecio Tampicancs, DC. Prodr. ?,,p. 427. OntheLimpio, Smith's Eun, Rock Creek, White 
Eock Mountains, near the Rio Gfrande, etc.; Bigelom, Wright, Parry. 

Sbnecio lobatos, Pers. Low hanks or heds of rivers, from Laredo to Frontera and the Santa 
Maria in Chihuahua. 

SENEcro RiDDELLii, Torr. & Gray, Fl. 2, p. 444. On the Lower Eio Grande ; Schott. 

Senecio longilobtjs, Benth. PI. Hartw. p. 18. Gravelly hills, Arroyas, etc., on the Eio 
Grande above Presidio, to Chihuahua and Sonora, In very various forme, 

Sesecio HLiFOLitrs, liuU.; Torr. & Gray, I. o. On the Leoua and Nueces, Texas. 

Senecio aureus, Linn,., var. bobbalis, Torr. dt Gray, I. c. Organ Mountains ; Wright, etc. 

Senecio canus, Hook., var. pygmjba, foliis angustissimis. Cobre, on mountains and hill sides ; 
Tliurber, Btgelotv. 

Senecio pastigiatcs, Nutt.; Gray, PI. Wright. 2, p. 99. Cobre, Mimbres, etc., New Mexico ; 
Wright, Bigdow, etc. 

Senecio Parryi (sp. nov.): herbaceus, viacoso-pubescens; caule striate; rarais oligocephalis; 
foliis argute insecLualiter dentatis, caulinia spathulatis inferne longe atteniiatis basi dilatata 
auriculato-amplexantibus, ramealibus summis lauceolatis; bracteis setaceo-subulatia ; capitulis 
breviter pedunculatia ; involucri (semipoUicari) paucibracteolati scLuamia acuminatis ; ligulis 
12-15 ; acheniis sericeo-cinereis — In live-oak groves, 150 miles above the mouth of the Pecos, 
on the Mexican side of the Rio Grande, November ; Parry. Root not seen. Stem, etc., slightly 
floccose when young Cauline leaves 2 inches or more in length. Lignles oblong, yellow, half 
an inch long. 

Cacalia decomposita. Gray, PI. Wright. 2, p. 99. Mountains east of Santa Cruz, Sonora; 
Wright. 

Centadkea Americana, Nutt. Sandy soil etc. from the Lower Eio Grande to Chihuahua. C. 
Mexicana, DC., is the same thing, 

CiiisiUM Weighiii, Gray, PI. Wright. 2, p. 101. Around springs, San Bernardino, New 
Mexico ; Wright. Comanche springs ; Bigeloto. 

CiESiUH ViBGiNiASUM, Michx. var. Low grounds, Kscondido springs ; Wright. Eio Grande ; 
Schott, etc. 

CiRSiuM UNDULATUM, Nutt; Gray, PL Wright. I. c. W, Texas to the Lirapio, and to Sonora, 
etc. In various forms, probably including C. ochrocentrum. Gray, PL FendL p. 110, *£ PL, 
Wright, 2, p. 101. 

CiRSiUM Neo-Mexicanum, Gray, PL Wright. 2, p. 101, Organ mountains and Cobre, New 
Mexico ; Wright, Bigelow. Cooke's spring ; Thurber. 

CiRSlUM Graramii, Gray, PL Wiight. 2, p. 102, In swamps, between the Sonoita and San 
Pedro, Sonora ; Wright, Thurber. 

CiRSiuM Coulteri, Harv. & Gray, PL Fendl. p. 110? Monterey, California; Parry. 

MoQUiNiA HYPOLEDCA, DC. Prodr. 7, p. 22. Mountain pass, near Parras, Thurber. This is 
No. 1391 and 2358 of Berlandier's collection, who records its vernacular name as " Ocotillo." 

Trixis feutescens, p. Browne; DC. Prodr. 7, p. 68; var. angustifolia, et foliis sericeo- 



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104 

pubescentibiis, argute denticulatis ; involucri superne sensini attenuatis acutia. — Among rocks, 
Bachimba, Chihuahua ; Tkurher. Ringgold's Barrack, on the Kio Grande, Texas ; Schott. Var. 
ANGUSiiFOLiA ; foliis lato vel anguato-lanceolatia margins plerumque revolutis subsericeia Eicpiua 
integerrirais. T. angnstifoHa, Gray, PI. Wright. 1, p. 128, <& 2, p. 102, Ravines, Santa Cfuk, 
Sonora ; El Paso and Flounce mountains, New Mexico ; Wright, Parry, Bigelow. Schultz, Bip. 
(in Botany of Ike Herald, p. 314) refers theae all to T. fnitescens, which maj well be the caae if 
that species includes forms with thicbish and silky pubescent leaves as well aa tapering acute 
scales of the involucre ; but, on the other hand these narrow-leaved varieties quite as clearly- 
run into T. angustifolia, DG. (Berlandier's No. 1284 and 1353,) which Schultz keeps separate. 
The latter belong to an arid region, and certainly look widely different from Berlandier's No. 
2100 and 2230, which I had supposed to answer to the type of T. frutescens. 

FEiiwaATavRBERi, Grap, PI. T/mrber, p. 324. Rocky hills, near Santa Cruz, Sonora; Thurber. 
Dr. Schullz has recently referred Perezia to Trixis, perhaps with reason, as it is difficult to 
draw a limit between them. 

Perezia Wriohtii, Gray, PI. Wright. 1, p. 111. On the Rio Grande, Rio Frio, Limpio, etc.; 
Wright, Bigeloio, Parry, Schott, Thurber. 

Pbeezia SANA, Gray, PI. Fcndl. p. Ill, (& PI. Wright. I. c. Gavelly or rocky hilla, from the 
Rio Grande, Texas, to the San Pedro, Sonora. The name is not always appropriate, as the 
plant is sometimes a foot high, 

Perezia runcinata, Gray, I. c. From the lower Eio Grande to Chihuahua. The lascicled 
roots become tuberous-thickened below, like those of a Peony or Dahlia.* 
Lbbta nutans, bo. Western and southern Texas, to the Rio Grande. 

Calais lineaeifolia, BO. Prodr. 7, p. 85 ; Gray, PI. Wright. 2, p. 102. Near San Diego, 
California ; Parry. New Mexico on the Rio Grande, Organ mountains, and Lake Gusman ; 
bright, Bigelow. Guadalupe canon, Sonora; Capt. Smith, 

Calais Paekyi, {Gray, in Bot. WUppl. Bep. p. 112, adn.): scaposa, fere glabra; foliis 
lineari-lanceolatis ssepius pinnatifido-laciniatis ; involucri squamis triseriatis ovatis oblongisve 
subobtuais, exlerioribus gradatim brevioribus ; ovariis Ifevibus ; pappi paleis oblongis apice 
bifidis arista e sinu exserente barbel lato-s cab ra dimidio brevioribus. — Near San Diego, California ; 
March ; Parry. The specimens are too young to give the com[deto characters. The plant 
belongs to the section Oalocalais, and in the pappus most resembles G. macroch^ta, Gray, PL 
F&ndl. ; but the scales of the involucre are much broader and blunt, and the awn of the pappus 
is shorter and more denticulate ; the leaves also are shorter and mostly obtuse. In 0. macro- 
chEeta, the scales of the involucre are lanceolate and gradually very taper-pointed ; and the 
slender awn is scarcely scabrous. 

Calais Douglasii, BO. Prodr. *l,p. 85. Near San Diego, California, March; Parry. Very 

In B 1 nd Iq I fi d etill another Pereila via : 

Pr u bsoue ( p n ) glanduloEo-acitoida ; lamia floiidis stiictia; foliis ft b b oat li gi t ve 

ut I ac (ftt pung lit -A litis liaai seesiii vii aiit ne vix amplesitaalibus tigidi p il bo- rr latia t I tia 1 tiis 
p B.se t a glandul pube uliB ramulis 3-5 ceplialis brevibu3 folia parva Inte nabratifm g t bus in 

tly m el ngatum p f rm eongestis; involucre cjlindrico 10-1 2-floro ; aqraim li n lanceol t se im b 1 to- 
TcmoatBapp ssl ntim p<ippo rigidnlo copioso (band clavellftto) miuilongis.— Uu. to M co K 1329 Base of 

1 t m n t no th le raucli below those whicli bear flowering branchlut i tl 1 L w t 1 i^ li 

inches long, gradually deoieasing to an inch, and shorter than the flowf ring branchi * th li d tl It th 1 ni 

a dense and elongated Ihyrsus of a foot or BO in length. Heads 9 or 10 lines long Se 1 ftV I f,l i I Iri. 

cated in several series, the exterior piissing into bractlets. Pappus whitish, pluris I Tl I dlj b th 1 ia 

' moEchata of Lallav. and Lex , or any other described species. 



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BOTANY. 105 

small and imperfect speciimens. Exterior achenia hirsute, as stated by Nuttall, not tlie inner, 
as described by Hooker and Arnott. 

CdLAis PLATYCARPHA {Gray, in Bot., Whippl. Hep. ^.113 & 114,): scaposa ; foliis pinnati- 
partttis (vel integris ?) glabris ; involucro calyculato ; acbeniis immaturis brevibus truncatis, 
paucis extimis villosis ; pappi paleis orbiculatis sen latissime ovalibus integerrimis apice subito 
brevi-ariatatis.^ — On clay liills, San Luis Key, California ; Parry. The specimen, although too 
young, affords characters which well distinguish this from tiie cognate C. Douglaaii. Tlie leaves 
are cut into numerous short and crowded lobes, and are as long as the young scapes. Involucre 
only 4 lines long, consisting of S or 10 oblong and rather obtuse scales of ec[ual length, and of 
a few short caljculate scales. The young achenia are oblong, rather clavate, and largest at the 
truncate apex ; it is not likely that they become rostrate or even tapering at the apex. Some of 
the exterior ones are hairy, more so than in C. Douglasii ; the others are glabrous, except a 
minute papillose pubescence on the ribs. Palea of the pappus 5, nearly 3 lines long, fully 2 
lines wide, entire, the midrib abruptly exaerted into a scabrous awn of only one-third the length 
of the scale itself. 

HEMIPTILIUM, Nov. Gen. 

Capitula et habitus Stephanomerioe. Achenia angulata, utrinque truncata, costata, eostis 
5 — 10 tuberculatis. Pappus 5-15-paleatu3; paleis lineari-lanceolatis vel setiformibua iuferne 
nudis, apicem versus breviter plumosis, — Herha graciles, annu^e vel biennes, glabra;, pani- 
culato-ramosissim^ ; ramis fere aphyllis ; floribus roseis? Species 2, nempe : 

Hbmpitilitim ScnoTTii (sp. nov.): capitulis parvis 5-floris ; acheniis 5--6-angulatis pluri- 
costatia, eostis tuherculoso-scabris ; pappi paleis 5-6 rigidis lineari-lanceolatis obtusiuaculis 
achenio haud longioribus infra medium nudis marginibus leviter scariosis. — Camp Miller, valley 
of the Gila; May, 1855; Schott. Only branchlets or branches were collected; these bear 
merely small subulate bracts in place of leaves, and racemose-panicled small heads. Involucre 
only 3 lines long. Branches of the style clavate, glabrous. Color of the flowers not recorded. 
Achenia 1^ line long : pappus of rigid palete, persistent or nearly so ; the plumose hairs borne 
at the upper part not much longer than the breadth of the paiea. The plant resembles Ste- 
phanomeria paniculata in aspect. 

Hemiptilitjm BtGBLOVii (ap. nov,): canle paniculato-ramosissirao e radice annua seu bienni ; 
foliis radicalibus linearibus subpinnatifldis, rameis vix uUis ; capitulis 6-9-flori8 ; acheniis 
S-costatis, eostis validis rugoso -tuberculatis ; pappo achenio duplo longiore e setis fragilibus 
12—15 baai dilatatis rariter denticulatis vel setulosis medio graciUimis nudis versus apicera 
barbellato-plumosis. — Frontera, New Mexico ; Bigelow. Plant with the aspect of Stephano- 
meria minor, (with which it has probably been confounded,) but perhaps more upright. Invo- 
lucre 4 or 5 lines long ; the ligules exserted to about the same length, apparently white or rose- 
color. Achenia with thick corky ribs, or etvong angles. Pappus white, fragile, at the summit 
appearing like that of a Scephanomeria, although rather less plumose, but naked below, and 
paleaceous at the base. 

Stephanomeria minor, Nutt.; Gray, in Whippl. Rep. p. 114. S. minor & S. runcinata, NuU.; 
Gray, PI. Wright, etc. Gravelly and rocky soil, from the Pecos, western Texas, to the Colorado 
of the West. 

Stephanomeria Tudreeki, Gray, PI. Thurber, p. 325. Sierra de los Animos, Sonora; TImrber. 
On the Santa Cruz river ; Captain Smith. Near the Cobre and Mimbres, New Mexico ; Bigelow, 
14 k 



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Br, Senry, Heads large, 17-20-flowered, with pink and fragrant flowers. Bristles of the 
pappus 25--30. 

EAnNESQUU Neo-Mexicana, Gray, PI. Wright. 2, p. 2, (&p. 103. Gravelly hilla near El 
Paso, etc. , New Mexico ; Bigdow, WrigU, Parry. Cook's Spring ; Bigehw. 

Eapinisquia Caltfornica, NuU. in Trans. Amer. Pkil. 8oo. 7, p. 429. {Tab. XXXIV.) Oak 
groves, Monterey, California ; Parry. Found also by Fremont on the Mohave river and in other 
parts of California. Some of the mature achenia (usually the exterior ones) have a mottled ap- 
pearance, as represented in one of the figures. 

Calycoseris Parryi (sp, nov.): involucro polyphyllo suhimhricato ; florihus fiavis ; acheniis 
longe roetratis, coatis Itevihus acute trinervatis. — Mountains east of Monterey, California ; 
June ; Parry. Only a single specimen was gathered, and that consists merely of the upper 
part of the plant, with reduced foliage. It is most interesting, however, as adding a second 
species to the genus Calycoseris, being a strict congener of the New Mexican C. Wrightii. It 
is distinguished by its yellow flowers, rather larger heads, more numerous scales to the invo- 
lucre, of which there are likewise a few external and shorter scales, effecting a transition into 
the smaller calyculate ones, which are more pointed and mostly squarrose-recurvcd ; the 
scales, as well as the peduncles and hranchlets, are more conspicuously beset with similar setose- 
pedicellate glands, which here are blackish. More important characters are afforded by the 
achenia ; these are more slender and rather longer ; the strong rihs are not so thick, and are 
smooth or even, (while in C. Wrightii they are tuberculate-roughened, a character hy no means 
sufficiently represented in the plate,) each with a sharp and salient dorsal nerve or keel, and 
with a less conspicuous lateral one on each side ; and the slender beak is as long as the body of 
the achenium. 

Calyoosekxs "Wrightii, Gray, PI. WrigU. 2, p. 104, t. 14. Low hills and alluvial banks of 
the Kio Grande, and elsewhere in New Mexico ; gathered by all the collectors. Guadalupe 
cation, Sonora ; Capt. Smith. 

PiNAKOPAPPUS R0SBU8, Less. Not rare in western and southern Texas, in Sonora, etc. 

Malacothrix OALiroRNiCA, DO. Prodr. 1, p. 192. In rather dry grassy places, Monterey, 
California ; Parry. 

Malacothrix? Coulteri, Harv. <& Gray, PI. Fendl. p. 113, adn. On the Sacramento? Cali- 
fornia; Rev. Mr. Fitch. One or two small bunches merely, throwing no more light upon this 
plant. 

Malacothrix 0BTU8A, Benih. PI. Harhu. p. 321. Monterey, California; Parry. 

Malicotukix tenuieolia, Nutt. in Trans. Amer. Phil. Soc. n. ser. 1, p. 435, ex char. Valley 
of the Gila, at Camp Miller ; May, 1855 ; SchoU. The same as Coulter's No 246, and appa- 
rently Nuttall's plant. But it is herbaceous, except perhaps the very base, and the nascent 
shoots and young involucral scales are canescent with a stellate tomentum, wliich is soon decid- 
uous. From three to five of the bristles of the pappus are more persistent and naked. 

Malacothrix Fendleri, Gray, PI. Wright. 2, p. 104. Along the Eio Grande, at El Paso, 
and elsewhere ; Bigelow, Wright, etc. Guadalape canon, Sonora ; Capt. E. K. Smith. 

Pyrropappus CAROLiNrAKUS, BO. Prodr. 7, p. 44. From the lower Bio Grande, Texas, to the 
Santa Cruz river, Sonora ; Schott, Capt. Smith. 

Macrohhynchus hetbrophyllus, Nutt.; Gray in Whippl. Bep. p. 115, M. Californicus, Torr. 
d' Gray. (Cryptopleura Oalifornica, Nutt.) M. Chilensis, Hook. t6 Am. Monterey and else- 
where in California ; Parry, etc. 



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BOTANY. 107 

Macrorhynchps LE3siN«n, nooh. & Am. Bot. Beech, p. 361. Sea-beaoli at Monterey, Cali- 
fornia ; April ; Parry. The specimen is in too early a state for proper investigation, but it has 
a thick root, and very obtuse or rounded exterior scales of the involucre. Perhaps M. grandi- 
florus, Nntt. (which is known only in fruit) is a fnlly developed state of it. 

Prbnanthbs? exiqua, Gray, PI. Wright. 2, p. 105. Hills near El Paso, etc. ; Wright, 
Bigelow. 

Lygodesmia aphylla, -DC, var, Texasa, Torr. & Gray, Fl. 2, p. 485. Common on plains 
from San Antonio, Texas, nearly to the Kio Grande, New Mexico. The stems hear long leaves 
towards the base. 

MuLGEDiNUM PULCEELLUM, Nutt.; Torr, & Gray, I. c. Plains, from the Limpio to the Eio 
Grrande, and Cohre, New Mexico. 

SoNCHUS OLEEACEus, Linn. Alluvial borders of the Eio G-rando ; Sclioti, Bigelow. 

SoNCHus aspee, Vill. Along the Gila ; Schoti. Cobre, New Mexico ; Bigelow. 

Ckepis AMBiauA, Gray, PI. Fendl. p. 114, & PI. Wright. 2, p. 106. Organ mountains, New 
Mexico ; Wright. 

HiERACiUM LONGIPILUM, ToiT. ; Torr. <& Gray, Fl. 2, p. 4T7. White-Rock mountain, head of 
Eock creek, western Texas ; Bigelow ; Jnly. 

L0BEL1ACEJ3. 

Lobelia pectinata, Engelm. in WisUz. Rep. p. 108. L. fenestralis, Oav.? Sonora, Septem- 
ber ; Thwfber, SclioU. (No. 420 and 1430, Wright.) The plant of Cavanilles is said to be 
perennial, while ours is certainly annual. 

Lobelia Berlanpieei, Alph. BG. Prodr. 1, p. 36T. On the lower Eio Grande, Chihuahua, 
Neuvo Leon, etc. (No. 419 and 1429, Wright. No, 3177, Berlandier, Mafcamoras.) Annual, 
smooth. Stem erect, or sometimes apparently prostrate, more or leas branching, mostly naked 
above. Lowest leaves broadly ovate or obovate, tapering at the base into a petiole ; upper ones 
sessile, ovate and oblong-lanceolate, irregularly and acutely toothed. Flowers in lax racemes 
terminating the branches ; the pedicels 2-4 lines long and twice the length of the linear bracts. 
Calyx about two thirds as long as the tube of the corolla, the segments subulate and denticulate. 
Corolla blue, 3-4 lines long ; upper segments oblong-lanceolate ; lower ones much narrower ■ 
the tube about as long as the stamina. Wright's 419 and 1429, differ in being more leafy above, 
and in the shorter pedicels. We suspect they are al! forms of L. Cliffortiaaa. 

Lobelia pubekula, Mickx. Fl. 2, p. 152. Near Victoria, Texas. This is the same as No. 42 
of Drummond's 3d Texan collection, which Alph. BC, refers to L. amcena. 

Lobelia lasiflora, H. B. K. 3, p. 311. L. fissa, Boem. <& SchuUes. Mabibi, Sonora- 
June ; Thurber. About a foot and a half high. Leaves 3-5 inches long, lanceolate, acute at 
each end ; the lower ones remotely and obscurely denticulate ; the upper minutely and sharfdy 
serrulate. Raceme few-flowered. Pedicels an inch or more in length. Flowers nearly as 
large as in L. cardinalis. Segments of the calyx triangular-lanceolate, scarcely longer than 
the hemispherical tube. Corolla dull red ; the tube three times as long as the calyx. Stamineal 
column considerably exserted.^ 

LoEBElA cardinalis, F. Sp. p. 1320. L. Texeusis, Baf. Leon Spring, Devil's river, and 
Head of the Nueces, western Texas ; also on the Mimbrea, Neuvo Mexico ; Bigelow. The 
flowers are sometimes smaller than in the northern plant ; in which state it seems to be hardly 
distinct from L. Texensis, Maf., except in the narrowdr flowers, and usually shorter sepals. 



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108 UNITED STATES AND MEXICAN BOUNDABY. 

Nemacladus eamosissimus, Nutt. in Titans. Amer. Phil. Soc. n. aer. 8. p. 254. {Tab. XLV.) 
Hill sides, Frontera, on the upper Bio Grande ; also in Chiliualiua, and near the Pimoa 
villages, on the Gila; Parry. (No. 1428 and 1431, Wright.) We have specimens from 
California, collected by Dr. Andrews and Pev. Mr. Fitch. Mr. Nuttall considers this remarkable 
plant as the type of a distinct natural order which ought to he placed between Lobeliaceie and 
Goodenoviacere ; but we think it should certainly be referred to the former, notwithstanding the 
non-cohering anthers. The stigma is destitute of an indusium, and even of a hairy fringe. 

CAMPANULACE^. 

Cysmicodon perfoliatum, Nutt. I. c. Campanula perfoliata, Linn. Copper Mines and Rio 
Mimbres, New Mexico; April-June; Bigelow. Canon of Guadalupe, Sonora; Copt. E. K. 
Smith. 

Dysmicodon ovatum, Nutt. I. c. On the lower Kio Grande ; April ; Schott. Eesar, Texas ; 
Berlandier, No. 368. 

Campylocbba LEPTOCAEPA, Nutt., I. c. First crossing of the Eio San Pedro, Texas; May- 
June ; Bigelow. 

Campanula iiOTTJNDrFOLiA, Linn. Sp.p. 239. Rocks on the Rio Grande, 150 miles above the 
mouth of the Pecos ; November ; Parry. The radical leaves are ovate and acute, but there can 
be little doubt of the plant bciog a form of 0. rotundifolia. 

ERICACEiE. 

Akctostapiiylos pungens, H. B. K. Nov. Gen. & Sp. 3, p. 278 ; Torr. in Emory, Pep. t. 7, 
(6 in Bat. Whipp. Pep., p. 116. Dry pine woods, near Monterey, in the same State ; Parry. 
Mountain sides and dry ravines, San Luis, etc., Sonora; Capt. E. K. Smith; Schoit, Thurber. 
Mexico ; Berlandier, No. 1318. Sometimes procumbent. Flowers rose-color. 

AECTOSTApnyLOS TOMENTOSA, Dougl.; PC. Prodr. 7, p. 585; Torr. I. c. San Luis Obispo, Cal- 
ifornia ; April ; Parry. Also in Napa county; Thurber. It is called Mansiniia, (little apple,) 
by the Mexicans of California, The red berries are used by the Spanish natives to make a 
cooling sub-acid drink. 

AkctosxaphyijOS polifolia, S. B. K. Nov. Gen., & Sp. 3, p. 277. Lower California, 
near the boundary line. A shrub, about six feet high, with dark purple berries, which 
become black in drying. 

Abbutus Menziesii, Pwrsh, Fl. 1, p. 282. Mountains at the head of Rock creek ; Bigelow. 
(No. 1433, Wright.') Only 12-15 feet high, and with smaller leaves than in the Oregon and 
California plant. In California, where it is common, it is a most beautiful tree, often 40 feet or 
more in height, and is known by the name of Madronia. The wood is used for making the 
heavy wooden stirrups of the Mexicans. 

Gaulthbria Shallon, Purah, Fl. 1, p. 284, t. 12. Pine woods near Monterey and in other 
parts of California ; Parry. The aromatic acid berries are rather agreeable to the taste. 

Vaccikicm ovatdm, Pwrsh, Fl. \,p. 290; lAndl. Bot. Peg. t. 1354. Pine woods near Monterey, 
California ; Parry. A neat evergreen shrub, 2-3 feet high. The berries are edible, but Brnall. 

STYRACE^. 

Styuas Califormicum, Torr. Fl. Frem, in, Smitlison. Conlrib. vol. 6. Valley of the Sacra- 
mento. 



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EBEKACEiE. 

DrosPYROS Tbxana, Schede in lAnmea. 22, p. 145. Hill sides, Fort Inge to Escoadido 
creek, and near Eagle Pass, weetern Texas ; Sclioit, Parry. Flowers in March. Fruit ripe in 
August, about an inch in diameter. 

SAPOTACE^. 

BuMELiA EECLTNATA, Vent. Ch. PI. t. 22, fide Alph. DG. Prodr. 8, p. 190 : var. iruetibua 
majoribus ; floribus fasciciilis numeposioribus. On the Kio Grande, from Laredo to the mouth 
of the river ; Schott. Hiils and plains near Live Oak creek ; Bigthw. No. 1434, Wright. 
Matamoras ; Berlandter, Nos. 1513, 3012 and 3048. A tree 25-30 feet high. It seems to 
differ from the plant of the Southern Atlantic States chiefly in the larger and more fleshy fruit. 
This is oblong, nearly three-fourths of an inch in length, sweet and edible. Testa smooth and 
shining, mottled with brown. Cotyledons united, thick and fleshy. Albumen wholly wanting, 

THEOPHEASTACEJi!. 

Jacquisia fcngens, Gray, PI. Tlmrb. in Mem. Amer. Acad. Art. & Sc. n. ser. 5, p. 325. 
Hills between Eayon aad Ures, Souora ; T/mrher. Perhaps a variety of T, macrocarpa, Cav. 

PLANTAGINACEiE. 

Plantago major, Limi. Sp., p. 163. Bunks of the Acequia, near El Paso ; May ; Bigelow. 
(No. 1441, Wright.) Probably introduced among agricultural seeds by the early Mexican 
settlers. 

Plantago Patagonica, var. gnaphalioides, Gray in Tore. Bot. Whipp. Rep. p. IIT, & Man. 
Bot. ed. 2, p. 269. P. gnaphalioides, Nutl. Gen. 1, p. 100. Western Texas, New Mexico, 
Sonora and California. Var. spicis oblongis vel capitatis. Bry hills, Sonora; Schott. San 
Diego, California; Parry. (No. 1438, Wright.) 

Plantago Vibginica, Linn. Sp.,p. 163. Sandy banks of the Eio Grande, Eagle Pass, etc. 
Also in fe'onora ; Schott. 

PLUMBAGINACE^. 

Statice Limonium, Linn. Sp., p. 394. Saline soils, western Texas, and on the Kio Grande near 
its mouth ; Bigelow, Schott. Salt places near San Diego, California ; Parry. 

PEIMULACE^. 

Androsace occidentalis, Pursh, PI. 1, p. 137; i^'utt. Gen. 1, p. 118. Mule Spring and Cook's 
Spring, western Texas ; April ; Bigeloiv. Tubac, Sonora ; March ; Parry. 

Samolus Valerakdi, Linn. , var. AM.EMCASVS^--Gray Man. ed. 2, p. 274. S. floribundus, H. B. 
K. Nov. Gen. d- Sp, 2, p. 224. Low places, borders of the Limpio ; July, Bigeloio. Banks 
of streams, Sonora, May ; Oapt. E. K. SmUIi, California; Parry. 

Samolus ebracteatds, H. B. K., I. c. p. 223, (. 129. Common along the Eio Grande 
from El Paso to the Gulf, and on the seacoast of Texas. 

Dodecatheon Meadia, Linn. Sp. p. 207 ; 'Imi; in Bot. Whippl. Hep., p. 118, Grassy places 
near Monterey and other places in California ; March to April ; Parry. This includes D. inte- 
grifolium, Michx., and even D. frigidum, Cham, 



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UNITED STATES AND MEXICAN BOUNDARY. 



LENTIBULACEJD. 



UrElcuT,A»iA GiBBA, Linn. Sp.p. 26. In the San Pedro river, also in Elm erect, and near 
the head waters of the Nueces, western Texas, October ; Bigelotv. 

BIGNONIACE^. 

Tecoma stans, Jms. Gen. p. 139 ; DC. Prodr, 9, p. 225. Hills along the Kio Grande, from 
El Paso downward and westward to Sonora ; May to July. (No. 1446, Wright.) 

Cira,opsis LiKEAEis, DG. I. c. p. 22T. 0. glutinosa, JfJngelm. in Wih. North. Mex., p. 94. 
Hills and ravines along the Rio Grande, Santa Cruz river, etc., Sonora ; Schott and Capt. HJ. K. 
Smith. San Felipe, California; Paj-ry (No. 1447, Wright). A shrub usually 4-6 feet high, 
hut Capt. Smith saw it in Sonora 25 feet high. I can distinguish hut one species in the collections. 

Suhorder SESAMEiE. 

Martynia vrOLACEA, Engdm. in Wisli-^. I. c. p. 101. Low places and plains, near the Limpio, 
etc.; July ; Bigelmo. Near Laredo ; Schott. Corallitas, etc.. Chihuahua ; Thurber, Parry. 

Maetynia akbnaria, Engdm.. I. c. p. 100. Sandy places, from El Paso and near the Limpio 
{Bigelow) to the Presidio del Norte ; July ; Parry. Sonora; September; Thurber. "Plant 
viscid ; corolla reddish-yellow externally, yellow inside ; the throat mottled and veined with 
brown." TJiurber. 

OROBANOHACEiE. 

Aphyllon unielorcm, Torr, <& Gr. in Gray's Man. Bot. ed. 2, p. 281. Orobanche iiniflora, 
Linn. California; Bev. A. Fitch, 

Aphyllon fascictjlatum, Torr. & Gr. I. c. Orobanche fasciculata, Nutt. Gen. 2, p. 59 ; Hook. 
Fl. Bor.-Am. 2, p. 93, (. 170. Tributaries of the Eio Yaq^ui, Sonora ; June ; Thurber. Moun- 
tains east of San Diego ; June ; Parry. Our numerous specimens show that the divisions of the 
calyx are variable in length and shape, so that the species is chiefly distinguished by its scaly 
stem and shorter peduncles, 

Phelip^a Ludoviciana, Walp.; Beuter in DO. Prodr. 11, p. 11. Orobanche Ludoviciana, 
Nuit. On the beach at Brazos Santiago, Texas ; May ; Schott. Pachitiga, Chihuahua ; August ; 
Thurber. 

Phetjp^a comosa. Anoplauthus comosus, Walp. Bep. 3, p. 480, & Ueut. I. c. Orobanche 
comosa, Hooh. Fl. Bor.-Am. 2, p. 92, t. 169. California, probably on the lower Sacramento; 
Shelton. The specimens were parasitic on the roots of a species of Grindelia ; apparently G. 
arguta. The calyx is deeply 5-parted, with nearly e^jual lanceolate- subulate segments. Brae- 
teoles very remote from the flower, alternate on the pedicel, resembling the segments of the 
calyx. Lobes of the corolla all acute and entire ; those of the upper lip ovate-lanceolate ; of the 
lower linear-lanceolate. 

SCEOPHULAHIAOEJi: (by A. Gray). 

MAiiRAJSDiA ANTiRRinNiFLORA, WHld. Sort. Berol. t. 83. Common in the valley of the Eio 
Grande, and west to California. 



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BOTANY. Ill 

Maurahma (Epixiphium) Wislizen: (ap. nov. Engelm.) : scandens, glabra ; foliia haatatis ; 
pedicellis axillaribus petiolo sajpiusi^ue calyce trevioribus ; corolla "pallide crerula," fauee 
pervia nuda; calyce fruetifuro demiim subcoriaceo valde aneto et reticulato bast 5-angulato sen 
5-carinato, lobis triangulari-lanceolatia sensim acuminatis ; capsula ovoidea coriacea calyce in- 
clusa stylo eneiformi rigido persistente cornuta, loculis jiixta apicem rima tranaversali dehiacen- 
tibus ; seminibus compressis ovalibua alatis disco paleaceo-rugosis. — Along tbe Eio Grande below 
DoiTa Ana, etc. This was first received in the collection of Dr. Wislizenns, and afiterwards in that 
of Wright and moat others from the northern bordera of Mexico. Dr. Engelmann proposed it 
long ago, in MSS., as a new genua, under the name oi EpixipMum maurandioides, which is here 
with his permission, changed to Wislizeni, since I incline to view the plant as the type of a mere 
subgenus of Maurandia, freely admitting, however, that its characters are as well marked as 
those of Lophospermum. The remarkable fructiferous calyx ia 8 or 9 lines broad at the base, 
strongly 5-angled and keeled, and an inch or an inch and a half long ; the sword-shaped per- 
sistent style nearly equala the calyx-lobes, and the dehiscence is by a clean transverse chink on 
each side, which inclines to extend downwards so as to become valvular. Seeds blackiah, dis- 
tinctly winged, 1^ to 2 lines long. 

Antirrhinum Kuttalliantjm, Benth. in DO. Prodr. 10, p. 592. San Diego, California; 
May-June ; Parry. On the Great Colorado ; SclwU. Leaves of the branches mostly roundish- 
cordate. Segments of the calyx ovate, a little unequal. Persistent base of the style oblique. 

Antirrhinum Coulxerianum, Bsntk. I. c. Near San Pasqual, California, May ; Thurher. 
Mountains east of San Diego, June ; Parry, Eoot annual. Stem 3 or 4 feet high, supporting 
itself on other plants by its twining slender branches. Raceme nearly a foot long: peraistent 
base of the style oblique. This species is near A. majus. 

LiNAEiA Canadensis, Bum.; Benth. in DO. Prodr. 10, p. 278. Kear tbe Copper Mines, and on 
Kock creek. New Mexico ; Bigeloio. Monterey, Califoraia ; Parry. Upper Sacramento ; SiiUman. 

ScROPHULARiA cocciNEA (sp. uov.) ; glabra ; foliis deltoideo-ovatia vel subcordatis acutis grosse 
dentatis, dentibus pauci-serratis ; thyrso oblongo aphyllo ; cymia plurifloris ftoribusque minutim 
glandulosis ; calycls segmentis ovatis margine baud scariosis ; corolla Ifete coccinea, lobis 2 pos- 

ticis tubo ovato-oblongo gibboso dimidio breviore, auticis brevissimia ; anthera sterili obovato, 

At tbe base of a rocky ledge near tie summit of a mountain, Santa Eita del Cobre, New Mexico ; 
Wright {1410), Sigelow. "What appears to be the same species in fruit was collected by Dr. 
Bigelow near the Organ mountains. A truly handsome species. Specimens raised from seeds 
in the autumn of 1852 (but which were unfortunately soon lost) displayed flowers as bright red 
as those of Stachys coccinea. 

CoLLiNSiA BicoLOE, Bentk. in Sort. Trans, n. ser. 1, p. 48, cfe in DC. Prodr. 10, p. 318, 
Oak woods near Santa Barbara, and San Diego, California; March ; Parry. 

Pentstemon ambiguus, Torr. in Ann. Lye. N. Y. p. 228, tfe in Marcy's Rep. p. 293, t. 16. Grav- 
elly hill sides near Tascate; July; and Burro mountains; September; also near San Diego; 
Biijelov). Sand hilla, Chihuahua ; Thurher (742.) A common species in or near the southern 
Eocky raountaina. In the figure cited above, the sterile filament is represented as bearino- a 
small anther, to which no allusion is made in the letter-press. It is not found in the present 
specimens, but exists in all those collected by Captain Marcy. In this as in several species of 
the genus, either all four fertile stamens or the two posterior are often free from the corolla 
nearly or even quite to the base. 



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112 UNITED STATES AND MEXICAN BOUNDARY. 

Pentstemon linarioides (sp. nov.) : suffruticosus, pube minutissima glauco-cinereus, mul- 
ticaulis ; caulibua floridia aimplicibus foliosis strictia (6-15-pollicaribus); foliia angusfcissime 
linearibus seu lineari-acerosis imisve spatulato-liaearibus mucronatis integerrimia ; racemo vel 
paniculo virgato lasifloro ; jjedunculia alternia brevibiis 1-5-floria ; calycia aegmentis ovatis vel 
ovato-lanceolatisacmninatia infernescarioso-iQarginatia; corolla pallidecseruleij-purpureaauperne 
ampliata breviter bilabiata, palato pi, m. barbato, lobia rotuiidatia aubconformibus patentibus ; 
antberia glabria subexsertia ; filamento ateriii longitudinaliter barbato. — Organ moimtains ; 
Pai-ry. Copper Minea and Los Animos, New Mexico ; Wright, (14T2,) Thurher, (331, 1115,) 
Bigehiv. Sierra tSan Luis, Cbihuahua and Sonora ; Sckott. A well marked apeciee, of tbe group 
to which the preceding belonga ; the numerous flowering sterna form a woody base ; the foliage 
and inflorescence resembling one of tbe strict and narrow-leaved Linarias. Corolla T to 9 lines 
long. 

Pentstemon Jamesii (Benth. in DO. Frodr. 10, p. 325) : pumihis, etrietus, puberulus ; foliis 
nunc glabratia omnibus sesailibus pleriaque parce denticulatis, caulinis floraiibusque linearibus, 
imis et radicalibus sublanceolatis deorsum attenuatis; racemo 8-12-floro spicato ; pedunculis 
alternis 1-2-floris sen pedicellia brevisaimis cum sepalis e baai lata lanceolatis aensim acuminatis 
viacido-pubentibuB ; corolla (pallide purpurea) tubo angusto, fauce subito valde ampliata cam- 
panulata, lobis conformibus rotundatia ; antheria glabris ; filamento sterili longitudinaliter 
barbate. — Low placea near tbe Limpio, July ; Bigdow. This species may be deacribed as inter- 
mediate between P. Cobjea and P. pumilua, Nutt. The specimens are only 5 or 6 inches high, 
herbaceous, erect, leafy ; the leaves from 1^ to 2^ inches long, and IJ to 2\ lines wide, thickish; 
the upper floral linear-aubulate and not exceeding the calyx ; the latter is half an inch long ; 
the corolla, which haa just the shape of that of P. Cobjea, is over an inch long. It is somewhat 
viscid externally and slightly bearded within the lower lip. Sterile stamen like that of P. 
Cobfea, but the beard denser. 

Pentstemon stenophyllus (sp. nov.) : glaberrimus ; caule gracili 2-3-pedali ; foliis linearibus 
elongatis integerrirais, floralibus lineari-setaceie ; panicula laxiflora ; pedunculis oppositis 
patentibus gracilibus 2-5-floris pedicellis 2-4-plo longioribus ; calyce parce glanduloso-pubero, 
segmentis ovatis margins acarioaia ciliato- denticulatis acuminatis, acumine patente; corolla 
infundibuliformi- ampliata (fere sesquipollicari cisrulea?) vix bilabiata, lobia brevihua conformibus 
rotundatia; antberia rima hirto-ciliolatia ; filamento ateriii glaberrimo summo apjce dilatato. — 
Hills between Babacomori and Santa Cruz, Sonora ; Wright, (1477.) Radical leaves not seen; 
cauline all alike, but gradually smaller and narrower towards the summit of the virgate stem, 
the larger 4 inches long and 1^ or 2 lines wide, perfectly entire. Peduncles 1| or 2 inches long. 
Pedicels 3 to 6 lines long. Calyx 2 or 3 lines long. Thia species belongs to the section Gepo- 
cosmus, and to the same group with P. imberbia. If, as seems likely, No. 186 of the collection 
ol'Wislizenus, from Cosiquiriachi, belongs here, the corolla ia blue. 

Pehtstbmor dasyphtllus (sp. nov.) : velutino-puberulus ; caulibua e basi suffructicosa strictis ; 
foliis lineari-lanceolatis imisve oblanceolatis integerrimis obtusia junioribus priesertim molliter 
velutinis, floralibus gradatim minoribua cum racemo simplici laxo paucifloro glanduloao-puber- 
ulentis; pedicellia alternis; sepalis ovato-oblongia obtusis ; corolla ("purpureo-cEcrulea " fere 
sesquipollicari) ampliato-infundibuliformi vix bilabiata, lobia rotundatia subeonformihua ; an- 
theria rima ciliolato-hirtellia ; filamento sterili glaberrimo apice vix dilatato.— Stony hills of the 
Pecoa, and Cook's Spring, New Mexico; Wright, (1478). Valley of the Santa Cruz river on moun- 
tain sides,andin thevalleyoftheSanPedro, Sonora; Capt.E. K. Smith, Bigelow <& Thurier. Also 



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BOiAXV. 113 

collected by Dr. Woodhouse in Sitgreave's expedition. Stems 1 to 2 feet high, simple, virgate. 
Leavea 1 to 3 inches long, li^ to 3 lines wide, thicTiiah. Pedicels almost always simple and 
ebracteolate, 3—8 lines long. Calyx 2-3 lines long ; corolla much as in the last ; sterile 
filament shorter, and gradually very slightly dilated upwards. This is evidently most related 
to P. lanceolatus, Benth.; but is more downy, with simpler inflorescence ; and the much larger 
and more dilated coroUa ia of a different color ; being red in P. lanceolatus, according to Dr. 
Gregg's notes on a specimen gathered by him at Buena Vista. 

Pektstbmon viROATUS, (sp. noT,): glaher, seu rainntissiraa glanduloso-puberuhis ; canlo herbaceo 
simplici stricto ; foliis lineari-lanceolatia acutis integerriniis, radicalibus spatulato-lanceolatia 
ohtuais, iioralibua gradatim in bracteas aubalatas breves diminutia ; panicula virgata elongata 
multiflora eubsecunda ; pedunculia plerumque oppoaitis 1-4-floris pedicellisq^ue ssepisaime 
floribus haud longioribus ; sepalis ovato-rotundis margine siibacariosis ; corolla (roseo-lilacina 
venis intus purpureis) dilatato-infundibuliformi bilabiata, labiis jequilongia, auperiore vix con- 
cave bilobo, inferiore patente tripartito, lobia omnibus ovalibus conformibua ; antheris glabi'ia 
subexsertis ; filamento sterili glaberrimo apice dilatato, — Santa Rita del Oobre, on the moun- 
tains ; Bigdov), Wright, (1476 ;) also gathered byi>r. Woodkouse. A pretty sppcies, which haa 
been raised in the Cambridge Botanic Garden, from Mr. Wright's seeds. It ia a foot or 18 inches 
high, including the virgate inflorescence of half that length. Leaves from 1^ to 4 inches long, 
and ]| to 3 lines wide, usually tapering to both ends. Corolla two-thirds of an inch long. 
Anther-cells aoon divaricate. According to Bentham's arrangement this belongs to the section 
Eupentstemon. 

Pentsxbmon ruNiCEUS (ap. nov,) : glaberrimus, glaucus ; caule herbaceo valido ; foliis crasala, 
radicalibus obovatis, caulinia ovatis cordato-amplexicaulibus plus minuave connatis acutla 
integerrimis, floralihus parvis ; panicula contracta virgata nuda interrupta ; cymis subsessilibus 
multifloris ; pedicellis graeilibus (flore fere fequilongia) nudia ; sepalia ovalis obtusis; corolla 
infundibuliforrai, limbo fere tequaliter 5-loho, lobia rotundatis patentibus ; antheria glabris, 
filamento sterili sub apice hinc barbato. — In the Guadalupe canon, Sonora, June, 1851 ; Thurher 
<6 Captain E. K. Smith. This ia apparently a large, and must be a strikingly handiaorae specie*', 
with its glaucous foliage and "brilliant scarlet" flowers. Lower leaves (with the bise of the 
stem) wanting in my specimen ; but those present show a tendency to be connate perfoliate 
Corolla lees than an inch long ; the throat moderately enlarged ; lobes about 3 lines long 

Pbnistemon puniceus, var.? Parryi : foliis auperioribiis (caet. ignotis) lanceolatis bail cordato 
amplexicaulibus ; cymis pedunculatis ; floribus paullo minoribus ; sepalis oblongia , filamento 
sterili sub apice hinc densisaime barbato. — On the Kio Gila, March, 1852; Pany The specimens 
gathered are merely two flowering summits ; the color of the bloasoms not recordi d, nor posi 
tively to be made out. But its floral characters so nearly accord with the piet-cdin^ that il 
must, for the present at least, be appended to it. 

Pentstemon Wkigiitii, Hook. Bot. Mag,, t, 4601. On rocky mountain sides near the head of 
the Limpio, June; Wright, (unnumbered.) Santa Cruz mountains and Loa Nogales ; OaptainE. 
K. Smith. (The latter a somewhat remarkable form, but clearly of this species.) We have 
also had this pretty species in cultivation. The corolla is rich rose-color, as described in the 
letter-press, but with none of the deep red given in the figure in the Botanical Magazine. 

Pektstbmon spbctabilis {Tlmrber, M8S.; Torr. & Gray, in Bot. Wkipp. Pacif. Bailroad 
15 k 



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Il4 UNITED STATES AND MEXICAN BuUNDARY. 

Bep.) Mouiitaina east of San Biego ; Parry. San Paaqual, California ; Thtirber, Sckott. "Dry 
ravines, Organ mountains, Kew Mexico; Bigelow, Wright, (14Y5.) These specimens of this 
well-marked and showy species, though not displaying such an ample panicle of flowers as do 
the Californian ones from Thurber and Mr. Wallace, evidently belong to the same species. It 
pertains to the section Cepocosmus. 

Pentstbmon Fendlbri, Gray, in Bot. Pope's Bep. f. 12, t. 5. Common apparently, from the 
Platte through New Mexico and the Kocky mountains to Chihuahua^ (WisUzenus, !No. 2i5,) and 
brought by all the collectors. It is Fendler's No. 576, and Wright's 1473. (This clearly m 
not distinct from P. cyananthus, Book. Bot, Mag., t. 4464, which was overlooked when 
P. Pendleri was characterized ; it must accordingly bear that name.) 

Pesistemos gracilis, NuU. Gen. p. 52. Near the Guadalupe river, above Victoria, Texas ; 
Schott. 

Pentstemon Digitalis, Nutt. in Trans. Amer. Phil. Sog. n. ser. 5, p. 181. Eio Hondo, Texas ; 
Wright. 

Pentstemon barbatus, Nutt.; Benth. in DC. Prodr. 10, p. 329. P. Torreyi, Benih.! I. c. p. 
324, Common in New Mexico, along the mountains; Fendler, (581,) Wright, (440, 1474); 
Bigeloio, etc. Santa Cruz mountain ; Captain E. E. Smith. We have this in cultivation from 
Mr. Wright's seeds. It is hardy at Cambridge, and is taller (4 to 6 feet high) than the com- 
monly cultivated P. barhatus, as well as fuller-flowered ; the virgate panicle becoming 2 or 5 
feet in length, and bearing a long succession of fine scarlet blossoms, in some plants of the 
most brilliant hue. The calyx-segments are either marginless or slightly margined. The 
lower lip of the corolla at the throat is bearded, either somewhat copiously or sparingly, or in 
some plants the beard wholly disappears, so that the name harbatus is not characteristic of this 
species. But that all our forms are specifically identical with the old Chelone barbata I cannot 
doubt. In establishing his P. Torreyi, Mr. Bentham, who is generally so very accurate, has 
made two mistakes ; the first, into which he was naturally led by the imperfection of the 
original specimens, was in referring his plant to the section Cepocosmus, and comparing it with 
P, imberbis, whereas it is a genuine Elmigera, having the upper lip erect, concave, and 
moderately two-lobed, the lower 3-parted and reflexed ; the second in attributing to P. harbatus 
a bearded sterile filament, whereas it has always been described as with a naked one, con- 
formably to the distinction formerly taken in this respect between Chelone and Pentstemon. 

Pentstemon babbatus, var. puberulbs. Guadalupe canon, May, 1851; Thurber. In every 
respect it is P. barhatus, but with a minute pubescence on the stem and leaves. 

Pentstemon eaccharifolius, Booh. Bot. Mag., t. 4627. Bocky bluffs at the Big Bend of the 
San Pedro river, Texas ; Wright, (439, 1479.) This showy species has been found only by 
Mr. Wright, who discovered it in 1849. From seeds gathered by him it has been raised both 
in England and in the Cambridge Botanic Garden. Overlooking Hooker's publication of the 
species, I had named it P. Grahami, in compliment to Colonel Graham, United States Topo- 
graphical Engineers, under whose command Mr. Wright was when he, for the second time, met 
with the plant ; but the name has not appeared in print, so far as I am aware. The figure in 
the Botanical Magazine does feeble justice to the very deep and carmine corolla, and represents 
the plant as coarser and the leaves as considerably larger than usual. The latter in the wild 
specimens are only \ — 1 inch long, and very thick and firm. Far from being "annual?" the 
plant is shrubby. The upper lip of the corolla is erect or at length somewhat recurved ; the 



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BOTANY. 115 

lower shorter, 3-partcd and reourvud. The plant is ambiguoiia between the sections Oepocosraua 
and Etmigera, 

Pentstemon coiiDiFOLiDS, Bcntli. ScropK. Ind. p. 1, adnot <& in DC. Prodr. 10, p. 329. 
MouQtaina east of San Diego, California ; June ; Parry. Near the town of the same name ; 
May ; Tlmrher. Sania Barbara ; Major 0. Rich. This species dilfers from all the rest of the 
genus in its somewhat elimbiug habit. It runs over tall bushes like a Lonicera, and has bn^ht 
scarlet flowers, which are resupinate. 

Pbststemon TJBRNATUS, (^Torv. MSS.): glaber ; caulibtis e basi frnticosa erectis ; foliis ternatim 
verticillatis lanceolatis argute denticulatis utrinque aeutis ; panicula laxa pauciflora; corolke 
tubo elongato rix ampliato labio recto ; filamento eterili bavbato. — Mountains east of San Diego ■ 
Jtioe ; Parry. Branches straight and slender. Leaves about one inch long. Flowers in 
terminal racemose panicles. Pedicels verticillate. Segments of the calyx ovate-lanceolate acumi- 
nate. Corolla nearly an inch long, pale scarlet according to Dr. Parry. This species belongs 
to the section Elmigcra of Bentham. 

Pektstemon cestranthifolius, Benth. Scroph. Ind. p. T, adnot. & m DC. Prodr. 10 p. 323 
Mountains east of San Diego, California ; June ; Parry. Also near Monterey ; Dr. Andreioa 
and Mr. Shelton. A fine deep scarlet-flowered species, with the leaves very variable in breadth. 

Pbntstbmon bbbviflorus, Lindl. Bot. Reg. t. 1946; Benth. in DC. Prodr. 10, p. 329, Cali- 
fornia, (near Monterey;) liev. A. Fitdi. A rare and remarkable species; also found by Dr. 
Bigelow on the Stanislaus river. Corolla yellow, except the lobes of the lower lip, which are 
pale purple. 

Pentstemon HETBROPHYLLUS, Lindl. Bot. Reg., t. 1899 ; Benth-. in DC. Piodr. 10 p. 300 ■ 
Gray in Bot. Whipp. Rep. Mountains east of San Diego, California ; June ; Parry. Near 
Monterey ; Dr Andrews. Our specimens appear to be suffrutesceut. The flowers are pale 
purple. 

Pentstemon antirrhinoides, BentJi. in DO. Prodr. 10, p. 694. Dry valleys among the moun- 
tains east of San Diego, California ; June ; Parry. San Pasqual ; Tlmrher; May. A rare 
shrubby species, 3 or 4 feet high. 

Leucoph-fllum Texanum, Benth. in DC. Prodr. 10, ^j. 344. Common in southern and western 
Texas, occurring in all the collections. The stigma is bilamellate, as described h^ Kunze but 
tlie two lamella commonly cohere. This must be a beautiful shrub when loaded, as it often is 
with its rich violet-purple blossoms, contrasting with its silvery white foliage. In the finest 
specimens the limb of the corolla is fully an inch in diameter, and delicately soft-bearded within 
and the wide tube two-thirds of an inch long to the base of the lobes. Sometimes the fifth 
stamen is present and imperfectly antheriferous. 

Leucophyllum MiNua (sp. nov.); huraile ; foliis obovato-spathulatis retusis pube minuta 
argenteis; ealycis laciniis linearibus; corolla lobis tubo dimidio brevioribus.— Hills on and 
near the Pecos; WrigU, (442, 1481.) Between Van Horn's "Wells and Muerta ; Bigelow 
Parry. A low, spreading shrub, only two feet high ; the tomentum much finer and closer than 
in the foregoing, and the purple flowers not half the size. Leaves from a quarter to half an 
inch long, including the petiole or tapering base. I am not sure that this is specifically distinct 
from L. ambigunm, having no specimen of that species. The corolla is, however, as deeply 
cleft as in L. Texanum. 

MiMCLUSLUTBUSjX.; Benth. in DO. Prodr. 10, p. 370; var. gracilis ; floribusminoribus. (Near 
M. Scouleri ; Hook; which can be only a form of M. luteus.) Copper Mines, New Mexico, and 



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IIG UNIIED STATES AND MEXICAN BOUNDAEY. 

near Crnces ; Bigelmv. Gila valley ; SeJioti. Napa county, California ; Thurher. San Luis 
Obispo ; Parry. The capsule of this species accords with the generic character, as given by 
Eentham, &c., except that thennmbranaceous valves scarcely, if at all, separate from the undi- 
vided placenta, but remain coherent by means of the tliiu and short partitious, 

MiMULUS GLABEATUS, B. B. K. Nov. Oen. <& Spec. 2, p. 3T0 ; Benih. I. c. Copper Mioes and 
Mimbres, New Mexico; Bigeloio ; Wright., (1842,) <£c. Ojo Francisco and Tucson, Sonora ; 
Parry & Capt. S. K. Smith, Texas ; Wright & lAndhetmer. This appears to vary as much 
in size and aspect, and to have nearly as large a geographical range as M. luteus ; and M. 
Jamesii is pretty plainly no more than a smaller flowered and almost entire-leaved northern 
iijrra of it. 

MiMULUS BV^'E\'iPE&, Benih. Soroph. Ind. 2, adnot., (&inDO. Prodr. lQ,p. 369. Wear San Diego, 
California, May; Ihurher, Parry, etc. Chiefly narrow-leaved forms, the same as Coulier's No. 
K40. Eentham indicates it as perennial, but our Douglasian specimens show an annual root ; 
so c!o those of Thurber. The capsule of this species is ovoid-lanceolate, rather firm and chartace- 
ous in texture, loculicidal and splitting through the axis, separating the two placeniffi, which 
remain adnate to the valves, just as in Diplacus. Through M, rubellus, etc., there is a regular 
gradation as to the dehiscence between this and the Mimuli with a thin and membranaceous 
capsule, and a fleshy placenta, which shows no disposition to split. 

MiMCLUS CARDraALls, Dougl.; Benth. I. c. Near San Diego, and in the mountains westward, 
California ; Parry. The valves of tlie capsule with the partitions in this species tardily separate 
from the axis, from which the two placeutte are pretty widely separated, being projected far 
into the cells. 

MiMULTJS EUBELLUS, (sp. nov ) ; tenellus, erectus, e radice annua ramosus, viscido-puberulus ; 
foliis anguste oblongis lanceolatisve trinervibus fere integerriinis basi angustatis sessilibus ; 
pedunculis folium plerisciue superantibus ; calycis oblongi dentibus brevibus aequalibus, ore 
aequali; coroUfe purpureas tubo baud exserto. — Wet ravines of the Organ mountains and 
Copper Mines, April ; Bigelmo, Wright, (1483,) and Hueco mountains ; Thurber, (135.) Plant 
2 to 6 inches high. Leaves 3 to 8 lines long, the uppermost acutish. Calyx perfectly equal at 
the summit, even in fruit, 3 lines long, narrow. Tube of the corolla yellowish, the limb 1^ 
line long, pink or purple. The valves of the capsule are pretty thin and delicate; but the 
placenta splits at the summit in dehiscence, or is bipartible, one half remaining adnate to each 
valve. 

MiMULTTS (DiPLACUS, Nutt.) QLtiTiNOSUS, Wcndl, Obs.y p. 51. San Francisco, Monterey, and 
San Diego, California. In various forms, and both with red and yellow flowers.' Several 
annual Mimuli being dehiscent through the placenta in the same way as the present plant, there 
appears to be no ground for viewing Diplacua as anything more than a marked section of 
Mimulus, distinguished by its shrubby habit, glutinous foliage, and narrow pods of a firm 
texture. 

EuNANUS Feemonti, Benth. in BG. Prodr. 10, p. 3Y4? Dry gravelly places near Monterey, 
Mav " Pan-y. Only a single and miserable specimen was gathered. It seems likely to be a 
state of E. Fr^monti, or possibly of Douglasii, with a remarkably abbreviated corolla. 

Hekpb&tis cham-SDRIOIDES, B. B. K. Nov. Gen. <& Spec. 2, p. 369. Santa Cruz, and Sierra 
Verde, Sonora ; Wright, (1484,) ScJiott. Also a variety with simpler and less spreading stems, 
and obscurely toothed leaves (H. nigrescens, Engelm. <& Gray, PL Lindk. No. 140:) between 
the Pecos and the Limpio ; Wright, (443,) and Bock Creek ; Bigdoiv. 



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Herpestis ROTOKDifoLiA, PuTsli, Fl. 2, ^). 418. Along the Eio Grande below El Paso; 
WriyM. (444.) 

Herpestis Monsiera, H. B. K. I. c. 11. cuneifolia, Purslt. Monuiera cuneifolla, Mickx. Fl. 
1, p. 22. Marshy shore of the Eio Grande, between Eagle Pass and Laredo, April ; Sekott. 
Monterey, Neuvo Leon ; Dr. Edwards. Chihuahua ; Dr. Gregg. 

CosoBiiA (Sohistophragma) ihtermbdia, (yp. Eov.) : viscoao-pubescens ; foliis subpinaatlpartitis ; 
floribus brevissime pedunculatia ; anthera loculis eubcontigiiis ; capsula ovato-Hnceolata calyce 
eubiniequali dimidio longioribus. — Dry hills around the Copper Mines, New Mexico ; very 
common; Wric/kt. (1485). Annual, erect spreading, 2-6 inches high, with the aspect of 0. 
(Leucospora) multifida ; only more pubescent ; the flowers very short-peduncled ; the corolla 
twice as large, purple, or the lower lip pale. Capsule 3 or 4 lines long, pointed. This 
connects Bentham's Conobea multifida and his Schistophragma pnsilla in such a way as to 
render it necessary to comprehend under one and the same genua these three species of closely 
similar aspect. The pod is just intermediate between the ovate shape of the first and the linear 
form which distinguishes the last ; but it has the spirally striate seeds of Schistophragma. Its 
unequal calyx (the upper sepal being somewhat larger, or at least longer than the others,) would 
appear to exclude it from Schistophragma no less than from Conobea ; but I observe the same 
thing, only rather less marked, in an authentic specimen of Bentham's S, pusilla var. maior 
from Santa Martha. The stigma is essentially the same iu all three. The present species has 
one peculiarity : while in its unequal calyx it seems to approach Herpestis, in its anthers (the 
cells of which are not side by side, but one inserted a little above the other) it approaches 
Stemodia and its allies. 

Conobea. mdltieida, Benth. in DO. Prodr. 10, p. 491. Capraria multifida, 3Uchx. PI. 2, p. 

22, t. 35. Common on the sandy shore of the Rio Grande near Eagle Pass, April May ■ 

Schott. Eio Coleto, Texas ; Thurber. 

Gbatiola pusilt^, Torr. in DO. Prodr. 10, p. 402. On the Colorado, Texas ; Wright. 

Veronica Ahagallis, L. New Mexico, on the Mimbres ; Wright, (1487,) Thurher ; and near 
the Copper Mines ; Bigelow. 

Verohica PEEE8RIHA, L. On the Eio Grande, near El Paso, and Lake Santa Maria Chihua- 
hua; WiHght, (liSS.) Plains near Lagunade Lache, Solado, Mexico; Bigelow. Tubac; Parry. 
San Bernardino, Chihuahua; Thurber, (376.) 

BiTuHKBRA BLOSGATA, Simrtz. Fl. hid. Occ. 2, p. 1061. Painted Caves and Medina creek 
Texas ; Bigelow, Schott. 

Seymekia ripinnatisecta, Seem. Bot. Herald, p. 323, t. 59, var. Texana; pilis glandulosis et 
viscidis pubeseens sen villosa ; ramis snbvalidis ; foliis bipinatifidis vel superioribiis pinnatifidip 
segmentis lato-linearibus obtusis inciso-dentatis ; pedicellis Sffipissime brevibus ; antherta obtu- 
siasimis; capsnlis glandulosis acutatia vel obtusis. — Upper Guadalupe river, etc. ; Lindheimer 
Lower Eio Grande ; Wright. H?ad of the Pedro river, Sonora ? Bigelow. A stouter more 
pubescent and glandular plant than S. pectinata, and with the leaves much more cut sometimes 
even tripinnatifid. The shape of the capsule varies so in the numerous specimens under exami- 
nation that I fear it cannot be greatly relied upon in this genus. The above character was 
drawn up, under a difierent name, before Seemann's plant was published. I have not seen 
Mexican specimens. Our plant has less dissected foliage and (except in one or two instances) 
much shorter pedicels than are delineated in Seemann's figure, and no such incised or pinnatifid 
calyx-lobes, (which, by the way, are not mentioned ia the character,) still the two are likely to 
tall under the same species. 



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118 UNITED STATES AND MEXIOAX BOUNDARY. 

SuYMEBiA SCABBA (sp. noT,): hispidulo-scabra, gracilis; fuliis Hnearibus pams pinnatipartitia 
pancilobatis superioribua 3-5-fldis integrisve ; corolla fere glabra ; antberis sagittatis, loculis 
acutia ■ capsulis glabellis ovato-aeuminatis. — Mountain sides beyond tbe pass of the Limpio ; 
Wright, (448.) Lower leaves wanting ; the largest seen little over half an inch in length ; tbi3 
segments narrowly linear 1-2-toothed or entire. ^'lowers about as large as those of 8. pectinata. 
Calyx-lobes narrowly linear. Capsule fully 4 lines long. Well marted by its anther-cells 
tapering gradually to an acute point. 

Gekardia WRiaiiTii {ap. nov.) : caulibus e radice perenni simplicibua virgatis cum foliia 
lineari-fiUformibus mucroaato-acutatis scaberrimis ; pedunculie flore aijuilongis ; calyce truncato 
breviter 5-dentato ; corolla flava late eampanulata e tubo brevissimo extus pubescente intua 
fflaberrima ; filamentia brevibus apice tantum villoeia ; antberis conformibua nudis obtusiasimia 
basi sagittatis, loculis arietato-subulatis ; stigmate clavato. — Hill sides between Babacomori and 
Santa Cruz Sonora ; Wright, (1489,) Bigdow. With the habit, calyx, and corolla of a true 
Gerardia, sect, campaniflorse, this plant has yellow flowers, (according to Mr. Wright's notes 
taken on the spot,) naked anthers, sbort-awned at the base, and the filaments glabrous except 
near the summit. The stamens are pretty strongly didynamoua, and the four anthers similar. 

G-ERAKDiA nBTBROPHYLLA, Nutt. ? var. pedunculis calyce dimidio brevioribus ; foliis plerisque 
ultra-poUicaribus. Leone Spring, Texas ; Bigdow. 

Gbeasdia porpurba, Linn. San Pedro river, etc., Texaa ; Parry, Schott. 

Castilleja indivisa, Mngelm. PI. Lindh. 1, p. 47; Benlk. in DG. Prodr. 10, p. 530. San 
Pedro river ; WrtgU, (453,) etc. ; Bigehw. Castle-Mouutain Pass, Texas, October ; Thurher. 

Castilleja purforba, Bon.; Benth. in BO. Frodr. 10, p. 531. Euchroma purpurea, mtt. 
Texas ■ WrigU, &c. Not seen on the Rio Grande, but common fiirther north and east. Well 
distinguished by the lower lip of the corolla, which is 2^ lines long, but not always half as long 
as the galea. The calyx is commonly split as deeply behind as before. " Bracts and calyx 
vaiying from sulphur yellow to flesh-color, brick-red, and cherry-red, even in the same locality, 
80 that the specific name is not a good one." (Lindheimer.) The root ia perennial. 

CAbTiLLEJA lahata (sp. nov.) : perennis, tomento floccoso simplici dense unditiue incana; 
foliis linearibus integerrimis, floralibas nunc trifldis apice coloratis ; spica demum interrupta ; 
calycis ae^ualiter bifidi lobis obovato-oblongis integerrimis retuaisve corolh-o labium inferiua 
multum superantibus.— Along and near the Eio Grande, from Eagle Pass, etc., to EI Paso ; 
Wright, (452, 1495), Bigelotv, Pa/rry, etc. On the Limpio; Wright, (451.) Near Buena Vista; 
Gregg. A most remarkable white-woolly species, with larger leaves and flowers than C. foliolosa. 
The latter species is sometimes almost as white, but its tomentum is formed of repeatedly branched 
hairs whereas the wool of C. lanata oonaists of long and simple arachnoid hairs. 

Castilleja tomentosa (sp. nov.): perennis, pilis simplicibus laxis cano-lanata; foliis linea- 
ribus margine revolutis integerrimis, floralibus trifldis superne coloratis ; spica demum inter- 
rupta ; calycia aubaecinaliter bifldi lobis semibifldia lanceolatis acutis corollam aecLuantibus.— 
Mabibi Sonora, June, 1851 ; Thurher. Considerably like the last and C. foliolosa, hut the 
wool less dense and floccoae than in C. lanata, and the calyx different, and apparently fully as 
long as the galea. Floral leaves and calyx-lobes red or purple. 

Castilleja angustifolu.. Euchroma angustifolia & E. Bradburii, Nutt. in Jour. Acad. 
Philad. 1 p. 46? On Live Oak creek, the Limpio, etc., Wright, (1491, 1492, with yellow 
bracts and calyx;) also in his first collection, but undistributed. Mr. H. Engelraann collected 
"t at Bnd^'■cr's Puiis. This moat lik(.ly behmga to Niittall's species, but the lower leaves are 



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BOTANY. 1 1 9 

mostly entire. The calyx is not equally 4-cleft, hut is equally 2-cleft and the divisions 2-cleft, 
nearly as in C. purpurea, from which it differs hy the short lower lip of the corolla. 

Castillbja sbssiliflora, Pursh, Fl. 2, p. 728. Low places near Rock creek and Mule Springs ; 
Bigelow. Eagle Pass ; Parry. Santa Maria, Chihuahua ; Sckott. Mule Springs, New Mexico, 
May ; Thurher, 

Castillbja iuspida, Benth. in Hook. Fl. Bor.-Am , & in DC. Prodr. 10, p. 532. Dry lulls, 
San Diego, California ; Parry. 

Castillbja ikteqra (sp. nov.): perennis ; caule stricto tomentoso ; foliis linearihus integerrimis 
suhtus tomentulosis, floralibus oblongis obovatisqne integerrimis coloratis (puniceis); spica con- 
ferta ; calyce ^qualiter yel postice profundins bifido, loWs bifidis lanceolatis obtusiusculis labium 
inferius galea multotiea brevins adaequantihus.— Organ mountains, east of El Paso ; Wright, 
(nndistributed,) Bigeloio. Guadaloupe canon, Sonora ; OapL E. K. Smith. Also gathered in 
the Rocky Mountains further north by Mr. Kreuafeldt, in Gunnison's expedition. Stem one or 
two feet high, mostly simple, rigid ; leaves 1^ to 3 inches long, 2 to 3 lines wide, entire ; most 
of the floral ones almost wholly petaloid, ample, shorter than the fully developed flowers. 
Calyx 8 or 12 lines long, red or reddish ; " corolla reddish green ;" galea 6 to 8 lines long ; 
the lower Up very short Apparently a well marked new species of the section Callichroma. 
It is No. 584 of Fendler's New Mexican collection; and Dr. Bigelow gathered specimens in 
Whipple's expedition on the Llano Estacado. 

Castilleja AFFiNis, Hook. dAm.Bot Beech, p. 144; Benth. I.e., p. 532; var. minor; corolla 
calyce pauUo longiore. Bed of exsiccated streams, near the Copper Mines, New Mexico ; Bigelow, 
Wright, (1494.) Santa Maria, Chihuahua ; Bigelow, Wright, (1493.) Presidio del Norte and 
Sonora ; Scholt. Loa Animos ; Thurber. Tubac, Sonora ; Parry. And Santa Cruz Mountains 
in the same State ; Captain E. K. Smith, A slender, often branching plant, with an annual or 
biennial root. Flowers, especially the corolla, very much smaller than in the typical Californian 
plant (such as Hartweg's No. 189B ;) but Hartweg's No. 1897 connects the two. The lobes of 
the calyx vary from nearly entire to deeply 2-cleft ; the tube is often split down deeper on the 
posterior than the anterior side. 

Castilleja laxa (sp. nov.): herbacea, cinereo-pubeecens ; caulibus e radice perennl subdiffusis 
ramosis gracilibus ; foliis tenuibus scabridis lineari-laneeolatis integerrimis basi baud dilatatis, 
floralibus calyce brevioribus, superioribus rubro-coloratis ; floribus paucis confertis breviter pedi- 
cellatis ; calyce rubello antice profundius postice leviter fisso, dentibus brevibua obtusis ; corolhe 
galea magna, lobis labii inferioris brevissimis obtusis. — Mountain sides near Santa Cruz, Sonora ; 
Wright, (1490.) This appears to be a well-marked species of the section Hemichroma, with 
the bracts and calyx more colored than is usual in that section. The thin leaves do not turn 
blackish in drying ; they are mostly about 2 inches long and 3 lines wide ; the floral shorter and 
blunter, the lower mostly green, the upper colored red. Calyx very thin, slightly pubescent, an 
inch long, exceeding the lower lip of the corolla by 3 or 4 lines, but half or two-thirds of an 
inch shorter than the ample galea, nearly straight, deeply cleft anteriorly, but on the posterior 
side only to the depth of 2 or 3 lines ; the teeth broad and short. Galea somewhat pubescent 
on the back, yellowish, the edges tinged with red. 

Castilleja unarijeeolia, Benth. in DC. Prodr., 10, p. 532. Arroyos in Sonora; Thwber. 
"Plant 4 to 6 feet high." Though the calyx is rather shorter and the falcate galea longer, this 
appears to be only C. linariaefolia. To it probably belongs 0. fulgens, JS^utt. ined., and C. can- 



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120 UNITLD STATES AJnD MEXICAN IJOUWDAliY. 

dena, Durand, PI. Herrm. Dr. iSigelow gathered it at Albuquerque, New Mexico, when iii 
"Whipple's expeditioD ; and Fendler's No. 583 is a narrow-leaved form of the same species. 

Orthocarpus ekiamthus, BenlTi. Scroph. Ind., p. 12, d in DO. Prodr. 10, p. 535. Grassy 
places near San Diego, Caiifornia, March ; Dr. Parry. 

Orthocarpus dbnsxi-loeus, Benfh. I. c. Dry hill sides, Monterey, California, April, Stem 
nearly simple, but the specimens are early ones, and later in the season no doubfc the plant 
becomes much branched. Lower leaves simple, tapering to a very long narrow point. Appendages 
of the lower lip rather obtuse. 

Orthocarpus LACEKUS, 5ett;A. P?. Sartw., p. 329. gan Luis Obispo, California ; Dr. Parry. 

Orthocarpus pubpurascens, Benth. DO. Prodr. 10, p. 536. Moist grassy places, near Mon- 
terey, California, April ; Parry. 

COEDYLANXHU LASiELORtTS (sp. nov.) : paniculato-ramosus, hirsutissimiis, siiblandulosus ; foliis 
linearibus brevibus iutegerrimis rarius trifidis ; floribus solitariis vel in ramulos breves adproxi- 
matis unibracteatis; calycia lobo postico apiee bidentato ; corolla labio inferior! saccato subin- 
tegerrirao ; anthemrura loculo altero abortivo sen in stam. breviorihus plane nullo. — Rocky bills, 
Sonora, Mexico; Thurber. Also Great Salt Lake; Gdl. Frhmont, 1843. Plant branched from 
the base, 1 or 2 feet high, turning dark colored in drying, very hirsute throughout with rather 
viscid and and sometimes rather glandular spreading hairs ; branchlets very numerous, short, 
very leafy throughout, bearing from one to four or five flowers. Leaves 6 to 9 lines long, about 
a line wide. Calyx half an inch long, almost equalling the " bright yellow " corolla. Galea 
nearly straight, broad. Anthers one-celled and with a minute pendulous vestige of the second 
cell, at least in the longer stamens. A true congener of the Californiaa species, remarkable for 
its scattered flowers, and for the abortion of the smaller anther cells, 

CoRDYLANTHUS Wriohtii (sp. nov.) : paniculato-ramosus, glabellus, minute glandulosus; 
foliis 3-5-partitis filiformibus ; bracteis eonformibus baud ciliatia ; floribus subcapitatis ; calycis 
lobo postico 2-3-dentato ; antherarum loculo altero pendnlo etiara in staminibus brevioribuB 
manifesto. Prairies, from 6 to 30 miles east of El Paso, Western Texas ; Wright, (450.) Sand 
hills, Chihuahua ; T/iurher. This, far the most eastern of the genus, was first met with by Mr, 
Wright, who found it only in the autumn of 1849, in his first expedition, which was attended by 
many hardships, but which was very rich in its botanical results. This species is nearly related 
to C. fllifblius ; but it is not so rigid, has finer foliage (without hispid hairs,) less capitate and 
larger flowers, the more incurved corolla an inch and a quarter long, and the upper lip of the. 
calyx is siore or less 2-3-tootbed or cleft at the apex. Seeds elongal^d-oblong, deeply farove- 
reticulated, 

CoRDTLANCTus FiLiFOLius, Nutt. ; Benih. in DO. Prodr. 10, p. 597, California, (station not 
recorded, but probably Monterey ;) Parry, Shelton. The middle lobe of the involucral bracts 
is somewhat dilated at the extremity and truneate-emarginate. 

Pedicularis cbntranthbra (sp. nov,): acaulis, glabra; foliis pinnatifidis scapura bis supe- 
rautibus, segmentia ovatis duplicato-dentatis margine denticulisque subcartilagineis discolo- 
ribus (albis ;) apica oblonga densiflora ; calycis cylindracei dentibus 5 aequalibus lanceolatis 
albido-marginatis ; corollas galea cucuUata erostri edentula labio inferiore patente pauUo lon- 
giore; filamentis glabris ; antheris basi eximie bicalcaratis, — New Mexico, and on Ben More 
April, Bigelmo; the specimens from the latter locality nearly past flowering. This is unlike 
any other Pedicularis that I know of, and is distinguished by its awned or spurred anthers from 
all known species except P, grandiflora, Fiscli., with which it has little else in common. The 



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BOTANY. 121 

awns are so long that their tips often project "beyond the hooded summit of tho galea. Leaves 
all radical, 6 inches long, broadly linear in outline, fringed with fine and white teeth. Peduncle 
an inch long, spike (partly in fruit) 3 inches long. Tube of the calyx half an inch long ; the 
lobes 3 lines long, their whitish margins somewhat crisped and erose. Corolla twice the length 
of the calyx, apparently pale purple ; the tnbe slender ; the helmet-shaped galea obtuse and 
not appendaged. Stamens inserted low down on the tube ; anthers 2^ lines long, including the 
tapering spurs. 

Pedicularis densiplora, Benth. in Hook. Fl. Bor.-Am. 2, p. 110. Dtj'- gravelly plains ; 
abundant near Monterey, California, May ; Parry ; also in Napa county, in the same State, 
March; TJmrber. 

LOGANIACEiE. 

MiTREOLA PBTioLATA, Torr. <& Gray, FL 2, p. 45. Wet places on Devil's river, and along 
the middle and lower Kio Grande ; also in Santa Rosa valley, Chihuahua, September to October. 
Leaves larger and broader than usual. 

PoLYPEBMUM TROcUMBBSs, iiB«. in Act. Ups. (1741,) t. 78; Torr. <& Gray, I. c; Cham. <fe 
ScUecht. in Linncea, 5, p. 173. Common on the Lower Rio Grande, April ; Schott. 

BuDBLEiA HuMBOLDTiANA, Eoem. & SchuU. Einconada Pass, December ; TJmrber. 

BoDDLErA MARRUBrifOLiA, BentJi. in DO. Prodr. 10, p. 441. On the Rio G-rande from the 
mouth of the Pecos to Presidio del Norte ; Parry, Bigelow. A neat shrub, 3-5 feet high, with 
heads of golden yellow odorous flowers, which turn to orange red. It is No. 1407 and 1780 
of Berlandier's Coll.; 311 of Wislizeniua, and 444 Gregg. 

Btjddlkia scoRDiorras, E. B. K. Nov. Gen. <& Spec. 2, p. 345, t. 183. Valley of the Pecos, and 
in Sonora; Wright, (No. 447, 1486.) Mountains of Muerte, July; Bitfdow. On the Rio 
Grande, below San Carlos, October ; Parry. Coralitas, Chihuahua, August ; Thurher. 

BuDDLBiA EACEMOSA (n. sp.) : fruticosa, 1-3-pedalis; foliis oblongis subovatisve obtusia 
inaequaliter crcnato-dentatis baai subhastatis truncatisve raro abrupte cuneatis petiolatis gla- 
bratie subtua ramisque junioribus pulverulenteo-canescentibus atormiferis ; capituHs globosis 
plurifloris breviter eeu longiuscule pedunculatis in racemum virgatum elongatum fere nudum 
dispositis ; tubo corollie calyce tomentoao brevioribus. (Upper Guadalupe, etc. , Texas ; liidddl, 
Lindheimer, Wright, Ervendherg.) August, November. Ya^x.incana: foliis pube molliesiral 
supra tenuiter tomentuloso subtua crebre tomentoso incanis. San Pedro river; Wright, (446.) 

EMORYA, Nov. Gen. 

Omnino Buddleia, nisi filamenta stylusque exserta capillaria. Frutex 3-6-pedalis, ramosus; 
foliis oblongis eubhastatis sinuato dentatis discoloribus ; infiorescentia laxa racemoao-tbyrsoidea ; 
floribus sesc[ui-pollicaribu8 viridi-ochroleucis. 

Emoeya soavbolens, (Table XSXVI.) Canons of the Rio Grande, below the Presidio del 
Norte, October ; Parry. Leaves opposite, 1—2 inches long, and from half an inch to an inch 
and a half broad, sinuatcly or repandly toothed, very obtuse or truncate at the base, glabrate 
above, whitish tomentoae underneath ; petioles scarcely half the length of the lamina, connected 
at the base by an elevated ring. Flowers in terminal cymulose panicles, sweet-scented ; pedicels 
bibracteolate, the bracteoles subulate. Calyx tubular, 4-8-costate, 4-cleft nearly to the 
middle ; segments nearly equal, linear-lanceolate erect. Corolla tubular, elongated, three times 
as long as the calyx, equally 4-cleft, the segments short and obtuse. Stamens 4, aubaequal 
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122 UNITED STATES AND MEXICAN BOUNDARY. 

exeerted ; anthers 2-celled, tifid at the base, mucroDulate at the summit ; filaments slender, 
very smooth, inserted into the middle of the tube of the corolla. Ovary oblong-conical, the 
hase surroimded by a glandular ring. Style conspicuously exserted, filiform, smooth, except at 
the base, which is a little pubescent, somewhat clavate at the summit ; stigma small, capitate. 
Capsule oblong, apiculate, 2-celled, septicidal ; valves 2-cIeft at the summit ; placentae thick, 
adnate to the axis. Seeds numerous, imbricated, the testa loose, cristate at both ends twice the 
length of the nucleus. Embryo straight. We have seen one or two pentamerous flowers. This 
genua is dedicated to Major William H. Emory, United States Commissioner to the Mexican 
Boundary Survey, who has taken the liveliest interest in the botany of the region explored 
under his command, and has afforded every facility to the gentlemen who had that department 
of science in charge. Mr. Miers, to whom we sent specimens of this plant, thought it might be 
referred to the tribe Btiddleiffl. Indeed it is nearly related to Buddleia itself, 

ACANTHACEJi;. 

Elytrabia tridentata, Vahl. var. caulescbns, Nees, in DC. Frodr. 11, p. 64. Guadaloupe 
cation, etc, Sonora ; Caj?i. E. K. Smith, Schott, Thurher. Lower California ; Mr. Hick. (No, 
1647, WrigM. No. 1207, Coulter; Mexico.) 

Calopiianes OBLONGtFOLius, D. Bon. in Stoeet Fl. Gard. 2, (. 181 ; Nees, I. e. p. 107. Valley 
of the Santa Cruz river, etc., Sonora; Gapt. E. K. Smith, Thurber. Plains between Van Horn's 
W"ells and Muerte, and down the valley of the Eio G-rande to the Gulf of Mexico. (No. 1462, 
Wright.) 

C. OBLOXGiFOLius, var. Tesensis, Nees, I. c.,p. 108. C. linearis, Engelm. & Gray, PI. Lindh. 
2, p. 50, {adnot.) Common along the middle Bio Grande on both sides of the river, and in 
Sonora ; flowering from April to September, (Nos. 1463 and 1464, Wright.) 

Crypiiianthus Babbadensis, Nees, Del. Sem. Hort. Vratisl. 1841, {&inDC. Prodr. 11, p. 197. 
Dipteracanthus nudiflorns, Engdm. & Gray, I. c, p. 21. Moist places in central and western 
Texas, particularly along the lower Rio Grande ; b'chott, Bigelow. (Nos. 1454 and 1455, Wright.) 
Euellia alba, Nees is, perhaps, not distinct. 

DiPTBRACANTHUS ? sUFFRUTicosus (n. sp.) : caule glabro infcmc fruticoso crecto; foliis ohovato- 
oblongis glabriusculis subcoriaceis basi in petiolem attenuatis, niargine retrorsum ciliatis ; 
pedunculis axillaribus l-floris ; bracteolis oblongo-Ianceolatis ; calycia laciniis lanceolato-line- 
aribus tubo corolla) elongato gracili subtriplo brevioribus. Presidio del Norte ; July — August ; 
Parry. Sides of rocky hills, valley of the Pecos, No. 1461, Wright. Plant apparently about 
a foot high. Leaves 1-1| inch long, acute or obtuse, smooth or slightly pubescent. Pedun- 
cles 2-4 lines long, the bracts a little longer than the calyx. Segments of the calyx 
sparsely ciliate. Corolla white ; the tube 1^ inch long, very slender, somewhat dilated at the 
summit ; lobes of the limb roundish- obovate. Stigma simple, (the inferior lobe abortive.) 
Capsules 4-seeded ; seeds hispid. This is the only suffruticose species of this genus known 
within the limits of our Flora. 

Stenandbium barbatum, Torr. d Gray, Bot. Pope's Eep. p. 13, t. 4. Mountains and hill sides 
along the Eio Grande from El Paso to the mouth of the Pecos ; March — April. (No. 1453, 
Wright.) Stem branching from a thick wood base. Plowers pale purple. 

ScHAUEBiA PAEViFOlJA (n, sp.) : suffruticosa e basi ramosorissima glanduloso-pubescens ; foliis 
ohlongis ovatisve acutis ; spicis terminalibus subpaniculatis interruptis ; floribus oppositis sessili- 



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BOTANY. 12iJ 

bus bracteia bracteoliacLue subulatis ; calycis laciniis lanceolato-subulatis ; corolla (purpureo) 
Bubbilaliata, labio superiore integro vel vix emarginafo, labiis oblongis leri^ualibus, labio infe- 
riore profunde trifido ; antheraruin loculis paralleliscontiguia muticis. Mountaina and rocky 
places on the Cibob of the Eio Grande ; August ; Bigelow. Monterey, Nuevo Leon ; Dr. Edwards, 
Dr. Gregg. Howard Springs ; Scho't. (No. 1460, Wright. No. 1459 is an early state of the 
same, in which the flowering branches or spikes are not developed.) At Oak creek, western 
Texas, Mr. Schott collected specimens with larger and almost orbiealar obscurely repand leaves. 
They probably grew in a shady place. Plant 6-12 inches long, sometimes diffuse. Loaves \ 
to 1 inch in length, abruptly narrowed to a petiole which is 3 to 6 lines long. I'lowers in 
loose compound spikes or panicles terminating the branches. Segments of the calyx subulate. 
Corolla 4-5 lines long ; the segments nearly equal and about as long as the tube. Capsule 5 
lines long, the lower half abruptly contracted and stipe-like ; the upper part orbicular-ovate, 
acuminate, smooth, 4-aeeded. Seeds discoid, muriculate, black. 

SciiATjEBIA LINEARIFOLU (n. sp. :) suffruticosa 6 baai ramosissima glaberrima ; foliis anguato- 
linearibus ; spicis terminaiibua gracilibus paniculatis, fioribus distantibus, bracteia bracteoliaque 
subulatis ; calycis laciniis lanceolato-subulatia, corolla (purpurea) subbilahiata laciniis oblongis 
subfBC[ualibu8 ; antherarum loculis parallelis contiguis muticis. Kocks at the mouth of the 
Great canon of the Rio Grande, and on the Burro mountains ; June — October ; Bigelow, 
Farry. (No. 436, Wright.) About a foot high. Leaves 8-10 lines long ; the loweat ones a 
little broader and somewhat spatulate ; upper ones half a line wide. Flowers solitary in the 
upper axils, the leaves being gradually reduced to subulate bracta, ao that the infloreacence 
becomes spicate. Calyx^ corolla, and fruit, as in the preceding species. 

Drejbra* WaiQHTii (n. sp.): ramis bifariara pubescentibus ; foliis oblongo-lanceolatis acumi- 
natis glabris, spicis unilateralibus nudis ; calyce glanduloao-pubescente profunde 5-fido, laciniis 
oblongo-lauceolatis ; coroUfe tubo angusto calyce muitoties longiore, labio inferiore tripartito, 
laciniis lanceolato-linearibus. Between the Guadaloupe river, Texas, and the Eio Grande; 
also near Monterey, Nuevo Leon ; June — October. Nos. 435 and 1457, Wright. Plant appa- 
rently 3 to 4 feet high ; dull grayish green ; the branches terete, marked with two broad lines 
of soft pubescence. Leaves 1^-2 inches long, and 6-8 lines wide ; green on both sides ; the 
petiole 3-5 lines long. Spikes terminating the paniculate branches. Bracts about as long as 
the very short pedicels. Corolla an inch and a half long; purplish red; the tube slender, 
inflated at the base, the enlarged portion about the length of the calyx ; segments of the upper 
lip a line and a half wide ; upper lip emarginate. Anther-cells linear, contiguous, parallel. 
Capsule smooth, 6-7 lines long, the upper half rhombic-ovate and semeniferous ; the lower 
attenuated to a narrow stipe and empty. Seeds commonly 2, rarely 3 or 4, lenticular, smooth. 

DaEJEEA PUBER.ULA, (n. sp,): ramis bifariam pubescentibus ; foliis oblongo-lanceolatis vel 
lineari-lanceolatis puberuHs brevipetiolatis ; spicis brevibus axillaribus terminalibusc[ue foliosis ; 
calyce glandnloso-pubescente profunde 5-fldo, laciniis lineari-subulatis ; corollfe tubo angusto 
calyce multoties longiore, labio inferiore tripartito, laciniis lanceolato-linearibus. Gravelly 
hills and ravines along the Cibolo of the Rio Grande ; May — June ; Bigeloio. No. 1456, 



o Wo have adopted fErated's view of tlie ]imi(s of Drejera, (in Vidensl;, Medd. Natiirhiat. For Kjobeoji, 1854, p, 154,) 
merely extending the character as to the calyx, which is 5-cleft or fi-parted. It includes Drejera, Ncei, and Jaoobinia S 2 of 
the same auiior in DC. Prodi: The latter genas was founded ou J. lepxda, and is the only species referred by Neea, to his first 
section. It differs ao much from tho species of the second group, wliich we would transfer to Drejera, that it may remain by. 
itself. 



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124 UNIT ED STATES AND MEXICAN BOUNDARY. 

Wright. Valley of the Rio Oonchos, below Santa Rosa, Chihuahua ; Gregg. A narrow leaved 
form ; collected form is No. 1237, Berlandier. Collected at San Juan del Rio, between the city 
of Mexico and Queretaro. A shrub 4 to 8 feet high. Leaves 1-2^ inches long, sparsely 
pubescent on both aides ; petioles 1-3 lines long. Flowers and fruit nearly as in the preceding 



Drejera Thueberi (n. sp.) : foliis (parvis) oblougis lanceolatisve pubescentihus ; llorihus 
fasciculatis q^uasi verticillatis foliis longiorihus ; calyce glanduloso-pubescent* profunde 5-par- 
titis, laciniis subulato-setaceis glanduloao-pubescentibue hirsutisve corolhe tubo vix triplo- 
breviorihus. Along water-courses. Las Animas, Sonora ; June ; Thurier. Sierra del Pajarito ; 
SchoU. Canon of Gruadaloupe ; April ; Capt. E. K. Smith. An ornamental shrub, 3-4 feet 
high, with a gray or whitish bark that separates in shreds. Leaves about three- ijiiarters of an 
inch long, obtuse and acute, Flowers mostly resupinate. Corolla dull red, an inch or more 
in length ; the tube funnel-form ; lower lip 3-parted, the divisions linear-lanceolate. Capsules 
mostly 2-8eeded, as long as the fructiferous calyx. 

Drejera juncea (n. sp.) : aphylla (an semper?) ; ramis virgatis minute pubescentihus ; spicis 
remotifloris paniculatis ; calyce profunde 5-fido glabresccnte, laciniis subulatis corollte tubo 
anguato multo brevioribus. In a sandy ravine, La Peiia, Cohahuila ; November ; Thurher. 
Plant 3-4 feet high, entirely leafless where found by Mr. Thurher, but it may bear leaves 
early in the season. Flowers sessile in unilateral spikes, without either bracts or bracteoles. 
Calyx at first somewhat pubescent, but at length nearly or quite smooth. "Corolla scarlet," 
an inch or more in length ; the tube slender ; lower lip deeply 3-[)arted, the divisions linear 
and narrow. Capsule ovate above the middle, tapering to a narrow base below ; 2-seeded. 
Besides the four species of Drejera here described, we have, from the collections of Dr. Gregg, 
another, which does not appear to have been noticed hitherto. It was found on the battle field 
of Paso del Gallinero. The specimens are not sufiicient for a full description, but the following 
character will serve for its identification : 

Drejbsa Geeggk (n. sp.) : ramis bifariam pubescentihus ; foliis ovatia scabriuscule pubescen- 
tihus subulato-venosis ; florihua fasciculatis foliis longioribus ; calyce incano pubescente, lobis 
lanceolatis tubo subtequalibua. A stout shrub. Leaves 1-1^ inch long, somewhat roughly 
pubescent on both surfaces ; petioles 1-2 lines long. Flowers dull purplish red, 1^ inch long ; 
the segments of the lower lip nearly as long as the tube, and very narrow. Fruit not known. 

LiPHOHOGLOSSA PiLOSELLA. Monechma Pilosella, Nees, I. c, p. 412. Adhatoda dipteracantha, 
Nees, I. c.,p. 396. Western Texas, on the Lower Kio Grande, and in the adjoining Mexican 
States, common; flowering throughout the summer. (No. 1458, JFnyti,396,1850,and501,1845, 
Lindheimer. Plant 6 to 12 inches high, suffruticose, much branched. Leaves half an inch to 
one and a half inch long. Flowers three-fourths of an inch long, pale purple. This plant is 
not a Monechma, for the capsule is 4-8eeded, and the habit is different. It is still further removed 
from Adhatoda. We think it belongs to the genus Siphonoglossa, ((Ersted, I. c, p. 159,) the 
character of which must be slightly modified to receive it. The calyx is 5-parted and the 
narrow upper lip of the corolla is emarginate. The anther-cells are nearly parallel and placed 
one above the other ; the lower one conspicuously mucronate, and the upper one less so. No. 
1213 of Coulter's Mexican collection is apparently an undescribed species of this genus. 

DiANlHERA Americana, iiMM. 6^. \,p. 27; Torr.Fl. N. York, 2, p. 27, Justicia pedunculosa, 
Michx. Fl. 1, p. 7. Ehytiglossa pedunculosa, Nees, I. c, p. 339. Mi Idle and western Texas. 



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liOTANY. 12,5 

Adatoda dipteracaktha, Nees, I. c, p. 396. Rio Leona, Rio San Pedro and near Eagle Pass, 
Western Texas ; March, April ; Schott, Sigehtv. (No. 1458, Wright.) Valley of the Conchoa 
and near Los Garaas ; Gregg. Monterey, Neiivo Leon ; Br. Edwards. A stouter form, more 
pubescent anil with the etem decidedly shrubby at the base, was found on the mountains of 
Muerte by Bigelow. It is No. 434 of Wright's earlier collection, and may be Monechma 
Pilosella, Nees. 

Sbeicograpiiis Calieornica {Gray MSS.): "foliis parvis ovalibus ovatis vel subcordatis, utrinque 
cum rarais teretibus pube moUi brevisaima tomentulosis ; racemis brevibus laxifloris ; floribus 
aut breviter ant longiuscule pedicellatis ; bracteolis linear i-subulatis calyce brevioribus ; corolla 
rubella longe tubulosa, labiis truncatis, superiore emarginato, inferiore 3-dentato; antherarum 
loculis 8uba9C[ualibus sejunctis, inferiore basi calcare obtuso hrevi incurvo auctis, Beloperone 
Californica ; Bentli. Bot. Voy. Sulph. p, 38? Jaeobina Californica, Nees in DC. Prodr. W, p. 
729, Southern part of California ; Fremont. Vallecita, California ; TAurber. Although not 
agreeing in every respect with the description, these incomplete specimens probably belong to 
Eentham's Beloperone Californica, which Nees has not inaptly referred to his genua Jacobinia ; 
but it surely belongs to Sericographis. It has the hairy lines, answering to the bases of the 
suppressed stamens, well-marked. In one blossom there were three perfect stamens. The upper 
lip of the corolla neatly shows the two long membranous lamella) which connive and form a 
long channel containing in tho bud the upper part of the style ; a character which Oersted has 
added to the description of this and some related genera." A, Gray. 

Adhatoda? LONGiPLORA (n. sp.) : caulc erecto minute pubesceute suffruticoso ; foliis lanceolato- 
oblongis glabris sursum angustatis acutiusculis basi in petiolum attenuatis floribus fasciculatia 
axiilaribus terminalibusq^ue sessilibus, tubo corollte elongato gracili. Road between 2Juui and 
Alta Sonora, September ; Schott. Plant apparently about a foot high ; branches erect and 
slender. Leaves (including the petiole) 1^-2 inches long and 3-5 lines wide, entire, nearly 
smooth. Flowers fascicled in the uppermost axils. Calyx a little shorter than the lanceolate 
bracts and longer than the subulate hracteoles, the segments subulate. Corolla white?; border 
4-lobed, the three lower segments oblong, the upper segments bifid at the summit. Stamens 2, 
exserted ; anther-cells separate, one placed above the other, obtuse at the summit, acute at the 
base. Ovary 4-ovuled, This seems to be distinct from any species of the genus described by 
Nees. 

DiCLiPTEKARESUPiNATA, Juss. in Ann. duMus. 9, j3. M^ fide Nees, I. c.,p. 474? D. thiaspoides, 
Nees, I. c. Santa Magdalena and Bacuachi, Sonora, September, October ; Thurber, Schott. (No. 
1465, Wrigftt.) Our plant is a perennial, and some of the specimens seem to be even suffruticoso, 
but D. resupinata and thiaspoides are said to be annuals. The length of the peduncle is variable ; 
in Sckott's and Wright's specimens it is as long as the lateral divisions, hut in Thurher's 
they are sometimes very short, and the middle division much elongated. The heads, also, 
although mostly 1-flowered, are sometimes 2-flowered, The bracts are mostly broadly cordate, 
but in Mr. Thurher's specimens from Bacuachi they are ovate and obovate. 

Tetrambrium NERVOSUM, Nees in Benth. Bot. Sulph. p. 148, L 48, Var. hispidum foliis ovato- 
oblongis obtusiusculis vel acutis (non acumiuatis.) Santa Crua and Fronteras, Sonora, June, 
September ; Thurber. Sierra do los Janos, in the same State ; Schott. Rocky hills, Santa Rosa, 
Chihuahua; Bigelow. Valley of a mountain stream near Sonoita, Sonora; No. 1466, Wright. 
Sierra de San Carlos, Tamaulipas ; Berlandier, No. 3181. Mexico ; Coulter, No, 1206. Our 



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126 



L'NITFID STATES AND MEXTCaN BOL'NDAliY. 



plant accords very nearly with the description and figure here quoted, but almost equally with 
theT. polystachyum and T. hispidum, which seem to be scarcely distinct from T. nervosum. The 
bracts are both appressed, and with spreading or even recurved tips, in the same specimen. The 
base of the stem is more or less woody, 

Tetrambrium platystegium (n. sp.) : canle minutissime pubescente ; foliis oblongo-lanceolatis 
inferioribuB obtusis superioribus acutiusculis utrinque scabriuscule puberulia ; spicis ovatia 
terminalibus ; bracteis late cordatia acuminatis appressis membranaceia leviter 3-5-nervibus ; 
calyce 5-partito ; corolla bracteis 8ubiiec[uautibus, tubo gracili, limbi laciniis oblongia aubaequali- 
bua, Einggold barracks near Rio Grande City, on the Lower Kio Grande ; May ; SchoU. Stem 
much branched ; the branches erect and slender. Leaves T-2 inches long and 4-6 lines wide, 
abruptly narrowed at the base into a petiole which is 2-3 lines long. Spikes 1 to 1^ inch 
long. Bracts fi-7 lines long and 5-6 lines wide, with a short mucronate acumination, closely 
sessile, somewhat roughly puberulous. Calyx much shorter than the tube of the corolla, the 
segments subulate- lanceolate. Corolla purple, subbilabrate, the divisions obtuse. Stamens 2, 
inserted at the summit of the tube of the corolla; anther-cells parallel, contiguous, rather acute 
at the base. Stigma minute, capitate, 2-lobed. Capsule narrowed at the base, ovate above the 
middle, 4-seeded. Seeds lenticular, muricate. In the 5-parted calyx this species differs from 
Tetramerium, as the genus is characterized by Nees; but in T. ovatum, (Erst, the calyx is 
also 5-parted. 

VERBENACE^. 

EouciiEA LINIFOLIA, Gray in Sill. Jour. {ser. 2,) 16, p. 98, (sine desc.) : suffruticosa? 
glaherrima; ramis sulcato-angulatis ; foliis linearibus vel lanceolato-lioearibua acutissimis inte- 
gerrimia; spicis laxiusculis; floribus aubsessilibus; bracteis subulatis calyce multo-brevioribua ; 
capsula calyce breviore. Valley of the San Pedro, Western Texas ; September, October ; ScJioU. 
(Nos. 436, 449, and 1509, Wright.) Plantsafoot or more high, with long, slender, erect branches. 
Leaves 1 — 2 inches long and 1-2 lines wide. Spike 2-4 inches long. Calyx cylindrical ; the 
subulate teeth scarcely one- fourth the length of the tube. Capsule obtuse, villous at the summit. 

BoucHBA SPATHULATA (u. sp.) : suffruticosa ; ramis teretibus ; foliis crebris obovatis integerrimia 
obtusis vel brevissimo mucronatia puberulis ; spicis laxis; floribus sessilibus ; bracteis foliaceia 
oblanceolatis, capsula calyce breviore acuta. Great Cailon of the Kio Grande near Mount Oarmel ; 
October; Parry. Plant 1-2 feet high. Leaves about three-fourths of an inch long, often 
fascicled in the axils and crowded on the short branchlets, somewhat scabro-puberuloua. Bracts 
nearly as long aa the calyx. Tube of the corolla nearly three-fourths of an inch long, and the 
limb half an inch in diameter. 

BoucHEA EiiRBNBERGii, Cham.; Sehauer in BC. Prodr. 11 , p. 558. Sonera, Mexico ; Thurber. 
(No. 1508, Wrigld.) 

LirpiA Wrightii, Gray in Sill. Jour. I. c. Aloysia scorodonoidesj H. B. K. nov. Gen. & 
Sp. 1,p. 260; ramis subtetragonis patentibus, junioribuspedunculisquepulvereo-canescentibus; 
foliis oppositis ovatis in petiolum brevem angustatia obtusis erenatis reticulato-rugosis supra 
scabro-hirtis stibtus tomentoso-candicantibus ; pedunculis axillaribus folium subosquantibus ; 
spicis cylindricis laxiusculis ; bracteis elUpticis acutis calyce longioribus; calyce ovato hirsute, 
dentihus ovatis. Eocky hills along the Cibolo of the Rio Grande, August ; near the Hot 
Springs, and on the Burro mountains ; September, November ; Bigehw. Presidio del Norte, 



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BOTANY 127 

September ; Farry. (No. 460 and 1506, Wright.) Sonora and Chihuahua, September, November ; 
Thurher. A shrub 2-4 feet high, with numerous slender spreading branches. Leaves half an 
inch to three-fourths of an inch long, abruptly tapering at the base into a short petiole. Spikes 
1-2 inches long in the axils of the upper leaves, olten forming a terminal panicle. Flowers 
at first closely approximated, but becoming more or less distinct. Calyx densely clothed with 
white hairs, about a line long. Corolla nearly twice as long as the calyx. 

Var. MAcEosTACHrA : foliis basi subcordatis j spicis longissimis. Cretaceous rocks near Eing- 
gold Barracks on the Eio Grande ; June ; Schott. West of Cerralbo ; May ; Gregg. 

LiPPiA LYcioiDES, Stend. Nomend. ed. 2, pars 2, p. 54 ; Schaiter, I. c. Rocky places along the 
Eio G-rande and its tributaries from El Paso to the Gulf; also Chihuahua, Cohahuila and Nuevo 
Leon, April— October. {No. 1505, fVrigkt. No. 2547 and 3004, Berlandier.) A shrub, com- 
monly 3-5 feet high, but sometimes attaining the height of 10 feet. Flowers very fragrant. 

Var. foliis ternis majoribus acutis grosse serrato-dentatis. Presidio tie! Norte; August; 
Bigelow. 

Var. foliis oppositis pauci serrato-dentatis obtusis. Presidio de Eio Grande ; Far-ry. 

LippiA Beulandibri, Schauer, I. c.,p. 575. Plains near Sau Felipe, September : also bills and 
stony places near Eagle Pass ; Bigeloio. Cretaceous hills on the Lower Rio Grande, March- 
October ; Schoit. Mount Carmel canon, Octohef ; Parry. Plant anffruticose, 2-3 feet high. 
(Nos. 459 and 1507, WrigU ; Nos. 832 and 2252, Berlandier.) 

LiPPiA GHMiNATA, H. B. K. Nov. Gen. dt S}?. 2, p. 215 ; Schauer, I. c, p. 582. On the Eio 
Grande, from Einggold Barracks downward. This exactly accords with Berlandier's plant, 
except that the leaves are smaller. 

LiPPiA NODiFLORA, Michx. Fl. 2, p. 15 ; Schauer, I. c. San Luis Eey, California, September ; 
Farry. Common along the Eio Grande. 

Lamtana CAHESCESS, {H. B. K. Nov. Gen. d Sp. 2, p. 259 ; Schauer in BO. Prodr. n,p. 607) 
foliis oppositis ternisve ovato-lanceolatis leviter crenato-serratis basi in petiolum brevem attenuatis 
supra scabriusculis subtus molliter incano-pubescentibus ; pedunculis folium subrequantibus ; 
capitulis vis involucratis demum ovatis. Santa Eosa, Cohahmla; Bigelow. This corresponds 
so minutely with the description of L. canescens DO. Frodr., except in the leaves being some- 
times ternate, that little doubt can exist as to its being the same species. It occurs in none of 
the collections but those of Dr. Bigelow. 

Lahtana macropoda (n. sp.) : suffruticosa, inermis, appresse hirautula ; foliis ovatis grosse et 
acute seratis basi abrupte attenuatis utrinque scabriusculis subtus pallidioribus ; pedunculis folio 
2-3-plo-longioribus ; capitulis paullo elongatis ; hracteis ovatis cuspidato-acuminatis, extimis 
majoribus involucrantibus ; fructibus exsuccis. Ravines and rocky places on the Eio Grande, 
from the mouth of the Rio San Pedro to 200 miles above ; flowering the whole season. Saltillo' 
Gregg ; (Nos. 458 and 4513, Wright.) Stem 2-3 feet high, obtusely quadrangular. Leaves 
opposite, 1-2 inches long, somewhat scabrous with a short appressed hirsute pubescence ; veins 
prominent underneath ; petiole or attenuated base of the leaf, about half as long as the lamina. 
Peduncles 3 — 6 inches long ; heads at first hemispherical, but at length ovate ; the rhachis cylin- 
drical and faveolate. Flowers sweet-scented ; corolla white ; the tube scarcely exsertei. Mature 
fruit about the size of a hemp seed, nearly dry, with a thin sarcocarp ; the endocarp bony cos- 
tate-rugoua ; cocci cohering. Seeds suspended from the funicle which arises from near the base 



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28 UNITED STATES AND MEXICAN RO( NDARV. 

of the cell ; near the last, and L. liispkla, Kuntli., but the latter species has serrato-crenate hul- 
late-rugous leaves, and a juicy fruit, 

Lantana odorata, Linn.; ScJiatter, I. c, p. SOU. Var. Berlandieri; foUis rhomboideo-oblongis 
acLitiusciilis supra scabriusculis suhtus pallidioribus vix cancscentibus. Ramos, Mexico, Tliur- 
ber. (No. 3184, Berlandier.) Plant 1-3 feet high, slender. Leaves about an inch long. Pe- 
duncles (in Eerlandier's specimens) much longer than the leaves. Flowers white. 

Lantana uoreida, H. B. K. I. c. p. 211. Var. i-abviblora, Schauer, I. c. p. 59T. Near San 
Antonio, Texas ; Thurher. Hills and dry prairies along tbe Rio Grrande, also on the seacoast 
near Indianola ; September — October; ScJioit. (No. 1511, Wright; Nos. 2114 and 2310, Ber- 
landier.) Banks of the Escondido and near the Painted Caves ; Bigelmo. We name this plant 
on the authority of an authentic specimen of Berlandier's, No. 2310, which is certainly the same 
as ours. It is a slirub 3 or 4 feet high, often quite unarmed, and usually the prickles are sparse 
and extremely short. Flowers yellow, turning to a deep brown. The fruit is about the siae of 
a peppercorn and ia juicy when ripe. It may be only a variety of L. Camara. 

Veejjena iiastata, Linn.; Torr. Fl. N. York, 2, p. 51. V. hastata. Lam. Eney. 8, p. 548; 
Schauer in 1)0. Prodr. 11, p. 545. Near the Copper Mines, June — July ; Bigelow. 

Vbfbbna PE08TEATA, R. Br. in Rort. Keio. (ed. 2) 4, p. 41 ; Schauer, I. c. p. 54'?. Grassy places 
near Monterey, California ; Parry. 

Verbena officinalis, Linn.; Schauer, I. c. Rocky places between Van Horn's Wells and 
Muerto, July ; Bigelow. Seashore, near Galveston, Texas, September; SchoU. Canon of Gua- 
daloupe, Sonora ; E. K. Smith. San Diego, California ; Thurber. 

Var. hirsuta; incano-hirsuta, assurgens, bracteis ealycem subfequantibus. Near the Copper 
Mines, New Mexico, June ; Bigeloio. 

Vbkbbsa canescens, H. B. K. Nov. Gen. & Sp. 2, . 274, t. 136; Schauer, I. c. V. remota, 
BentJi. PI. Hartw. p.1\. Western Texas, along the Rio Grande, and in the adjoining Mexican 
States. (Nos. 1496 and 1497, WrigU. Nos. 827, 955, 1485, 2054, and 2247, Berlandier. 
No, 77, (1846,) Lindkeimer. No, 594, Fendler.) Some forms of V. officinalis approach this 
species ; and V. strigosa, Sook. Comp. Bot. Mag. 1, p. 176, seems to be hardly distinct. 

Verbena bkacteosa, Miclix. Fl. 2, p. 14; Scnkauer, I. c.,p. 549, Sa Diego mountains, on the 
Rio Grande, and sandy places, El Paso, etc.; May — October; Bigelow, Thurber. (No. 1499, 
Wright.) 

Vbbbena Aubletia, Linn.; Schauer, I. c, p. 554, V. bipinnatiflda, Schauer, I. c. Glandn- 
laria bipinnatifida, Nuti. Trans. Amer. Phil. Soc. (n. ser.) 5, p. 184; common everywhere in 
Western Texas, New Mexico, extending to Chihuahua and Sonora. (Nos. 1501, 1502, and 1503, 
Wright.) Flowers throughout the season. We have in vain sought for characters to distinguish 
the two species here united. They vary in the number and form of the segments of the leaves. 
The ripe nutlets are the same in both. We know of no plants which, in the wild state, are 
more prone to hybridize than the North American species of this genus. Dr. Engelmann has 
enumerated (in Silliman's Journal, vol. ?,) many intermediate forms between V. officinalis, V. 
hastata, V. urticaifolia, and V, stricta, which he found in the vicinity of St. Louis, Missouri, 

AviCENNiA TOMBHTOSA, Jacg.; Schauer in DC. Prodr. 11, p. 69!). Mouth of the Rio Grande, 
October— November; Schott. A]sofonnd,many years ago, at Tampa Bay^ Florida, by Z>r. ieauera- 
worth, and at Key West by the late Mr. Blodgett. 



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LABIATE. 

Hyptis spicata., Poir.; Benth. in DO. Prodr. 12, p. 121? San Bernardino, Sonora, Jnly; 
Thurber. Differs in the unequal teeth, the longer of which are not mnch shorter than the 
tube, 

Hyptis lanata, Benth. Bat. Sdph. p. 42, t. 20. On the lower Gila ; Emovii. Major lUch 
found it also in lower California. 

Mentha Canadensis, Linn.; Benth. in DC. Prodr. 12, p. IT'S. Banks of the Mimbres, Octo- 
ber ; Bigelow. California ; Shdton. 

Lycopus Eiirop;eus, Linn. Var. sinuatus, Oray, Man. ed, %,p. 304. L. ainnatns, Bentli.; 
L. exaltatua <& L. sinuatns. Ell. Eiver banks near San Luis Key, California, October ; Parry. 

Monakdella undulata, Benth. in DO. Prodr. 1'2, p. 190. Dana's Ranch, California ; Parry. 

Monardblla candicans, Benth. PI. Hartw. p. 330 ; Torr. Bot. Whippl. Pep. p. 123. Moun- 
tains east of San Diego, California, June ; Parry. Also found by Mr, Shelton. 

Monardblla odoratissima, Benth. in. DO. Prodr. I. c. Near San Diego, California, and o;i 
the mountains east, June ; Parry. 

Monardella villosa, Benth. Bot. Sulph. p. 4% t. 21. San Felipe, California, June ; Farr>-. 
Var. LEPiosiPHON : foliis integerrimis vel obsolete repando-deutatis ; corollie tube calyce duplo 
longiore. Stem apparently assurgent. Leaves three-fourths of an inch long, ovate, abruptly 
tapering at the base to a petiole which is half the length of the lanaina. Bracts ovate, acute, 
slightly colored. Head nearly an inch in diameter, about 30-flowered. Calyx oblong-cylin- 
drical ; teeth lanceolate, acute, nearly equal. Tube of the corolla slender, a little tapering 
upward ; segments of the limb linear, rather acute, scarcely equal. Stamens exserted ; anthci'- 
cells at length so much divaricate as to be in a line and almost confluent. Differs from the 
ordinary form of M. villosa in being much less hairy, the leaves not crenate-serrate (as they are 
in our California specimens, and in the figure quoted above), the longer petioles, loss crowded 
heads of flowers, and especially in the long-exserted tube of the corolla. 

Micromeria Douglasii, Benth. Lab. p. 372. Pine woods near Monterey, California, May ; 
Parry. 

MiCROMEElA Xalapeksis, Benth. Lab. I. c. San Antonio, Texas, April ; Tkurber. 

Calamistha GLABELLA, Benth. in DO. Prodr. 12, p. 230. Canila glabella, Michx. Fl. 1, p. 
13. San Antonio, Texas, April ; Thurber. 

PoGOGYNE Douglasii, Benth. Lab. p. 414. Valley of the Sacramento, and frequent in other 
parts of California; Fitch, Stillman, Shelton, etc. We have never been able to distinguish 
satisfactorily more than one species of this genus. We have numerous forms of it, but thev 
seem to pass into each other. 

Hedeoma mollis (n, ep.) : incano-tomentosa ; foliis ovatis obtusis integris basi in petioleni 
brevem attenuatis ; verticillastris 6-12-floris ; floribus brevipedicellatis ; calycibus cylindricia 
non gibbosis, dentibns brevissimis ; staminibus inferioribns subexsertis, superioribus rudimentis 
sterilibus.— Cliffs near Puerto de Paysano, September ; Bigelow. Plant somewhat ligneous at 
the base, which throws up several slender branches 12 to 15 inches in height. Leaves three- 
fourths of an inch long and 3 or 4 lines wide. Flowers crowded in axillary cymules. Calyx 
about 3 lines long, slightly curved, the teeth one-fifth the length of the tube. Corolla about as 
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130 UNITED STATES AKD MEXICAN BOtJtiDARY. 

long as the calyx. Upper lip a little notched. Lower lip 3-lohed ; the middle lobe emarginate ; 
lateral ones entire, Stamens i ; the two inferior onea perfect and nearly exserted ; anthers with 
divaricate oblong cells ; upper stamens reduced to simple short filaments. 

Hedeoma plioata (n. sp.) : suifruticosa e basi ramosa; ramis erectis pubescentibus ; foliis 
rhombeo-oyatis utrinqiie acutis argute serratis crebre et eximie penninerviis subpHcatis, supra 
scabriusculis subtus pubescentibus ; corollis ealyce gibboBO duplo longioribus. Dry ravines near 
the Limpio mountains, July; Bigelow. (No. 464 and l'?18, Wright.) Branches about a span 
high, retrorsely pubescent. Leaves mostly shorter than the internodes, 3-4 lines long, of 
rather a thick texture, tapering to a petiole about a line in length, the numerous straight and 
parallel veins very prominent underneath. Verticils 2-6-flowered, the pedicels 1-2 lines long. 
Calyx gibbous at the base, distinctly 2-lipped ; teeth of the upper lip ovate, mucronate, half the 
length of the subulate ones of the lower lip. Tube of the corolla exserted, more than half the 
length of the calyx ; upper lip 3-lobed, the middle lobe longer and emarginate ; the upper lip 
also emarginate. 

Hebeoma dentata (n, sp.) : annua; ramia erectis gracilibua pubescentibus; foliis petiolatis 
oblongo-lanceolatis acutis pauci-dentatis ; venis prominulis ; verticillis remotis 6-10-floris ; 
ealyce subbilabiato vix gibboso, dentibus e basi lato-subulatis inequalibus, labii superiore diver- 
gentibus. Near Santa Cruz, Sonora, September ; Thurber. Near the Copper Mines, October ; 
Bigeloio. About a foot high ; much branching from the base, forming a bunch about a foot in 
diameter ; the internodes of the branches rather distant. Leaves 5 lines long, tapering^at the 
base into a short petiole, acutely 3-4-toothed on each margin ; the veins underneath con- 
spicuous, thicker at the extremity. Verticils usually not more than 6-flowered. Calyx slightly 
gibbous toward the base ; teeth of the lower lip nearly twice as long as those of the upper. 
Corolla twice as long as the calyx. Upper lip emarginate ; lower 3-Iobed, the middle lobe 
notched. Near H. Drummondi, but in that species the leaves are entire with inconspicuous 
nerves, and the teeth of the calyx are all connivent. 

Var. nana: foliis rainoribus late ovatis vel ovato-oblongis interdum subintegeirimis. Rocky 
hills of the Kio Grande, near El Paso, April — May. Plant usually from 3 to 6 inches high, 
much branched from the base, incano- pubescent. Leaves one-third of an inch long. Bracts 
subiilate, shorter than the pedicels. Verticils approximated, 3-12-flowered. Calyx evidently 
bilabiate, gibbous ; upper teeth much shorter than the lower, subulate-lanceolate from a broad 
base ; lower teeth subulate. 

Hedeoma incaxa (n. sp,): fruticosa, ramosissima, incana ; ramis erectis foliosis ; foliis lineari- 
bus vel oblongo-linearibus integerrimis obtusiusculis, axillis fasciculatis ; verticillastris 4-6- 
floris, floribus snbsessiiibus ; calycibus oblongo-cylindricis villosissimis subaec[ualiter S-dentatis. 
Sandy places near £1 Paso, April — May ; Barry, Wright (£ Bigelow. (No. 1523, Wright.) 
Plant about 2 feet high with the taste and odor of sage; the branches slender, sometimes 
apparently assurgent, slender, hoary, like the leaves, with a minute close pubescence. Leaves 
about three-fourths of an inch long, sessile, tapering at the base, flat. Flowers about 5 lines 
in length. Calyx densely villous with long white hairs ; the teeth lanceolate. Corolla more 
than twice the length of the calyx ; upper lip notched ; lower 3 lobed, the middle lobe deeply 
emarginate ; tube short, villous in the throat. Fertile stamens 2, a little exserted ; the connec- 
tive very thick ; the anther-cells widely divaricate below, opening upward. Abortive rudiments 
of the superior sfamens minute. Style strongly and rather nncqiially 2-cleft at the summit. 



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BOTANl' 131 

Allied to Koithia, but with a different habit, and a shorter corolla than in any of the described 
species of that genus. In the calyx it differs from both geaera. It may remain in Hedeoma 
for the present, but, if other species like it should be found, it may be the type of a new genus. 

Hedeoms, Drummondi, Benth. Lab. p. 308, din DO. Prodr. VI, p. 245. H. acinoides, Scheele 
in Linn<Ba ,%%, p. 522 f Sandy hills, Mexico, western Texas, and Chihuahua. (ITo. 463, 1518, 
1519, and 1522, JVrighi. ; No. 620, Fendler, N. Mtx. ; Ko. 185, fasc. 11. Lmdlmmir.) This 
species is certainly annual, and never perennial nor suffrutescent, as Benthani sup[)osed ittobu. 
It is a variable plant. Sometimes it is dwarf and cespitose ; the leaves are linear-oblong or ovate, 
and sessile with a narrow base, or with a petiole nearly as long as the lamina ; the calyx is more 
or less hairy, and when the plant grows in shady places the tube of the corolla is about the 
length of the caiyx, while usually it is only about half as long. H. ciliata, Nutt. PI. Gamh. p. 
183, is probably only a variety of this polymorphous species. 

Sphacelb calycina, Bentk. Lai. p. 568, and in DO. Frodr. 12, p. 255. (Tab. XXXVli.) 
Near Monterey, California, May ; Parry. A strong plant, 2-3 feet high, somewhat shrubby 
at the base. 

Salvia lanceolata, WUld. Enum. 1, p. 37 ; Betith. in DO. Prodr. 12, p. 299. S. triehosto- 
moides, Pursh, Fl. 1, p. 19. Borders of the Rio G-rande in western Texas, Chihuahua, and 
New Mexico ; west to the Copper Mines. (No. 469, 470, and 1529, Wright; the last a very 
narrow leaved form. No. 606 /5 & 608, Fendl., N. Mex., the former a small state of the plant,) 

Salvia azueea, Lam.; Benth. I. o. p. 302 ; Pot. Mag. t. 1728. S. angustifolia, Michx. Fl. 2, 
p. 13. S. Pitcheri, Ttyrr. in Benth. Lab. p. 251. S. casia, Scheele, iit Linnma., 22, p. 588. 
Common along the Rio Grande, in New Mexico. S. fariuacea, Benth. seems hardly distinct 
from this species. No. 468 Wright, is a narrow-leaved form. 

Salvia albiflora, Mari. & Oaleotti in Bull. Acad. Brux. v. 11. ex Benth. in DG. Prodr. VI, 
p. 307. In damp situations, Santa Magdalena, Sonora; Thurber, Sclwtt. Plant about 3 feet 
high, paniculately branched above, snfooth. Lower leaves 1^-2 inches long and an inch 
broad, ou petioles an inch or more in length, acuminate, mostly acute at the base, serrate. 
Whorls about 6 flowered, rather closely approximate, forming long racemes, which are nearly 
leafless. Pedicels two-thirds as long as the calyx. Upper lip of the calyx entire ; lower 
2-toothed, Corolla about 4 lines long ; the upper lip strongly pubescent. 

Salvia spicata, Roem. <g Schult. Syst. Mant. 1, p. 202 ; Benth. I. c. p. 315 ? Apache Springs, 
TA&trXx; Parry. Our plant accords with the description of Koemer & Schultes, and it appears 
also to be the same as 8. breviflora. Moo. dc Sesse. 

Salvia ballotsfloea, Benth. Lab. p. 270. S. laxa, Benth. in DC. Prodr. 12, p. 313. On 
the Lower Rio Grande and its tributaries, and in the Mexican States south of the Gila ; common. 
(No. 471, 472, 1524, and 1525, Wnghl. No. 821, 1431, 2240, and 3186, Berlandier.) A 
shrubby species, 2-5 feet high, variable in the form and size of the leaves. Flowers bright 
purplish-blue. Our numerous specimens show a gradual transition from S. ballot^fiora to S. 
laxa. " The plant is used as an aromatic by the Mexicans, who call it Majorano," Schott. 

Salvia microphtlla, H. B. K. Nov. Gen. dt Spec. 2, p. 294 ; Benth. in DG. Prodr. 12, p. 335. 
Mount Carrael, near the Great Canon of the Rio Grande ; Parry, Dry prairies between Elm 
creek and Turkey creek ; Schott. Mr. Bentham, to whom I sent specimens of this plant, savs, 
that it is "very near S. microphylla, but the leaves are almost entire and not rugose; the calyces 
also arc longer." It is a shrubby and apparently soincwliat spreading plant, 'i'lie leaves are 



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132 UNITED STATES AND MEXICAN BOUNDARY, 

oblong, obtuse, narrowed at the base into a short petiole, green and nearly smooth on both sides, 
and rarely with one or two teeth on each margin. The flowers are in terminal racemes. Corolla 
bright purplish-red, more than an inch long, the galea about two-thirds the length of the lower 
lip, and a little hairy. 

Salvia psbudo-coccinea, Jacq.; BentJi, in DO. Prodr. 12, p. 343, Neuvo Leon ; Thurber. I 
have specimens of what appears to he the same species, raised in the Cambridge (Mass.) botanic 
garden, from Texan seeds collected by Mr. Wright, Perhaps not sufficiently distinct from the 
next species. 

Salvia cocciNBA, Linn. Mant. p. 88; Benth. I.e. On the Rio Grande, from Laredo down- 
ward ; Schntt, Dr. Edwards. Los Nogales, Sonora ; Capt. E. K. Smith. 

Salvia Eobmbbiana, Sckeele in Linncea, 22, p. 586. S. porphyrata, Decaisne in Rev. Hortic 
1854, ex Hook. Bot. Mag. t. 4939. Crossing of the San Pedro river, Texas, and on Live Oa,k 
creek, a tributary of the Pecos ; also on mountains near the Rio Grande, in Chihuahua ; Bigeloiv. 
Eio Mimbres, New Mexico ; Thurher. (No. 473 and 1526, Wright.) This species varies greatly 
in the foliage. In the form represented in the Bot, Mag. I. c, (which is the same aa Wright's 
and Bigelow's from Live Oak creek,) the leaves are mostly simple, (rarely pinnatifid, with a 
pair of small remote segments,) broadly cordate, ]|-2 inches wide and coarsely runcinate- 
toothed. The description of Scheele applies to Thurber's specimens and to those collected by 
Bigelow in Chihuahua. It is a showy species, with large bright scarlet flowers. 

Salvia cakduacea, Benth. Lab., p. 302 ; Bot. Mag. t. 4874. S. gossypina, Benth. PI. Sartw. 
p. 330. Near San Diego, California ; Parry. 

Salvia Columbari.*;, Bmth. I. c ; Torr. Bot. Whippl. Rep. p. 123. San Pasqual, California, 
May ; Thurher. Dry hills near San Diego, California; Parry. This plant is called CUa, by 
the native Californians. The seeds abound in mucilage, which is imparted to cold water, and 
the beverage thus obtained is much esteemed as a summer drink. Thurber. 

S.\LViA Tbsana. Salviastbum Tbxanum, ScheeUin Linnaea, 22, p. 585 ; Torr. & Gray, Bot. 
Pope's Rep. p. 169, (. 6. Western Texas and New Mexico, along the Rio Grande, mostly in 
high and dry situations. (No. 466, Wright. No. 1090 and 2520, Berlandier.) We have re- 
moved this plant to Salvia, from which it does not differ generically. It hardly accords with 
any of Bentham's section, but is nearest Heterosphace, from which it differs in habit and in the 
calyx closed by hairs. 

AuDlBERTiAftRANDiFLOEA, SeK(7i. Lab. p. Z12, (& in DO. Prodr. 12, p. 359. (Tab. XXXVIII.) 
In woods near Santa Barbara, California, March; Parry. Stem herbaceous 2-3 feet high. 
Flowers bright crimson, large and highly ornamental. 

AuDiBEETiA BTACHYOiDES, Benth. I. c. Sandy hills, between San Diego and Monterey, March- 
May ; Parry, Thurher. A common shrub in California. 

AiJDiBERTiA POLYSTACHTA, Benth. I. c. Abundant near San Diego, California, May ; Thurber. 
Stem 3-4 feet high, slightly branched, bearing numerous spikes in a long terminal panicle. 

MoKARDA AEiSTATA, Nutt. Trans. Amer. Phil. Soc. n. ser. 5, p. 186 ; Benth. in DO. Prodr- 
12, p. 363. Between San Antonio and the Rio Grande, Texas, and from the Presidio del Norte 
to Laredo, April — September. A low form, which I think is M. pectinata, Nutl. PI. Gamb. 
p. 182, was found by Dr. Bigelow at the Copper Mines, New Mexico. It is also No. 1531, 
Wright. 

MoNARDA PUNCTATA, Linn.; Benth. I. c. Sea shore near Galveston, Texas, September ; h'chott. 



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BOTANY, 133 

MoNARDA PISTUL03A, Linn.; Benth. I. a. M. Lindheimeri, Engelm. & Gray, PI. Lindh. l,p. 
20, Copper Mines ; July ; Bigdoiv. 

Dracocephalum PABViFLORUM, NuU. Gen. 2, p. 35; Torr. Fl. N. York, 2, p. 15; Btnth. m 
DC. Frodr. 12, p. 400. Dry ravines, Organ mountains, April ; Bigelow, Wriglit. 

Oedkonella cana, Hook. Bot. Mag. t. 4618. Near the Copper Mines; Bigelow, Wright. 
Burro mountains ; Bigelow. Perhaps not distinct from C, Mexicana. No. 1532, Wright, has 
broadly cordate coarsely toothed leaves, which are 1^ inch loQg and more than an inch wide. 
In the specimens from the Copper Mines (No. 15S3, Wright) the leaves are ovate or oblong, 
8-10 linee long and rather sparingly toothed or almost entire. Our specimens from the Burro 
mountains have lanceolate leaves, of which only a few of the lowest are slightly toothed near 
the base. 

Cedronella pallida, Lindl. Bot. Beg. 32, t. 29? Janos, Chihuahua, May ; Thurher. Var. 
foliis ovato-oblongis has! acutiusculis. (No. 1534, Wright.) Differs from C. caua in the more 
dense and spike-libe inflorescence, and in corolla being only a little longer than the calyx. 

Scutellaria tuberosa, Benth. Lab. p. 441 ; Torr. Bot. Whippl. Bep. p. 123. Near Monterey, 
California; Parry; and Napa county in the same State; Thurher. 

ScDTBLLARiA RE8IS0SA, Torr. in Ann. Lye. JSf. York, 2, p. 232; Benth. in DC. 12, p. 427. 
S. Drumraondii, Benth. I. c. Mule Springs, May— August; Thurher. Wet places near the 
Flounce mountains, June; Bigelow. Lower Eio G-rande; Schott. Valley of the Cocospera, 
Sonora, September ; Schott. Presidio del Norte ; Parry. Plant annual, but sometimes appear- 
ing to be Euffrutescent, from the base becoming woody when old. Varies in pubescence, and 
with the leaves entire or crenate, as well as more or less broad. S. Drumraondii passes by a 
gradual transition to S. resinosa, 

SALAZAEIA, Nov. Gen. 

Calyx subglobosus, inappendicniatus, breviter bilabiatus, post anthesin valde auctus, vesicu- 
loso-infiatus, reticulatus, labiis inasqualibus integris in ore parvo confluentibus. Corolla tubus 
longe exaertus, recurvato-adscendens, superne in fauce dilatatus ; limbo bilabiato, labio superiors 
concavo apice integro, inferiore patenti-convexo apice emarginato, lobis lateralibus brevibus 
cum labio superiore coalitis. Stamina vix exserta: antherae ciliatae, staminum inferiorum uni- 
loculares, superiorum biiocularescordatae. Stylus apice siibulatus, indivisus. Nucnlfe depresso- 
globose tuberculosa. Cotyledones radiculie brevi incumbentes. — Frutex ramosisslmua ; foliis 
parvis petiolatis integris ; racemis paucifloris tevminalibus, floribns cEeruleis. 

8. Mexicana. (Tab. XSXIX.) Eavines, Chihuahua, below Presidio del Norte, near the 
Eio Grande; Barry. This remarkable plant was first discovered by Col. Fremont, in 1844, on 
the Eio de los Angelos, a branch of the Eio Virgen, western New Mexico ; but the specimens 
were too much injured for description. It is a shrub 2 or 3 feet high, with numerous slender 
spreading or reclinate branches, which are terete and hoary, with a minute appressed pub- 
escence. The leaves are about half an inch long, petiolate, ovate or oblong-lanceolate, acute at 
the base, slightly pubescent, 3-nerved; petiole 2-3 lines long. Eaceraes 2-6- flowered, ter- 
minating the branches. Flowers on short pedicels, as large as those of Scutellaria galericulata, 
which they much resemble. Calyx, at first, with entire, very obtuse and equal lips, at length 
very much enlarged (nearly three-fourths of an inch in diameter) and bladder-like, with a con- 
tracted orifice. Corolla nearly an inch long; the upper lip concave and incurved; lower lip 
dilated, the sides somewhat reflexed, much shorter than the upper iip, to which they are 



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134 UKIIED STATICS AND MEXICAN BOUKDAllY, 

attaclied. Stamens scarcely exserted; the anthers approximated ia pairs; the inferior (longer) 
pair with one of the cells abortive; lower pair with cordate, 2-celled anthers, the cells some- 
what divaricate. Style long and filiform, not at all bifid at the summit. Nutlets depressed- 
globose, horizontal, nearly a line in the transverse diameter, roughened with minute tubercles. 
Seed conduplicate, or bent at an acute aagle, so that the cotyledons are somewhat horizontal 
and incumbent on the radicle. One or more of the nutlets are commonly abortive. 

Mr, Bentham (in the introduction to his Gen, & Spec. Labiat., p. xxix) says, that the embryo 
of all Labiatse that he had examined is either straight or only slightly curved ; the only excep- 
tion being in Scutellaria, in which " it is curved backward in a peculiar manner." Salazaria 
exhibits the same peculiarity, that is, the cotyledons are incumbent. The rather short radicle 
is not applied close to the cotyledons, but makes an acute angle with them. This results from 
the flexure of the carpel itself, which commences at an early period, and at last the vertex 
approaches the base, as in Menispermum. The nutlets in Scutellaria are always more or less 
roughened with minute tubercles, or with thick scales which are imbricated retrorsely. In S. 
parvula there is a distinct horizontal wing, free from the tubercles, and surrounding the nutlet, 
thus making an approach to Periloma, in which they are narrowly 4-winged. 

It is evident that Salazaria makes a near approach to Scutellaria, but its nearly regular and 
bladder-like inappendiculate fructiferous calyx, in which there is scarcely any distinction of 
upper and lower lip, distinguishes it sufficiently from that genus. 

PhtjOSTESIA Virginiana, Benth. Lab. p. 504. Dracocephalum Virginianum, Linn. Sp. p. 
828. Western Texas ; Wright. 

Beazonia trukcata, Engelm. <t Giay, PI. Lindh. 1, p. 47; Benik I. c.p. 434. Near Austin, 
Texas, May; Wright. 

Marrubium vulgarb, L.; Benih. in 1)0. Prodr. 12, p. 453. Santa Orua, Sonora, May; Co.pt. 
E. K. Smith. Doubtless introduced by the Spaniards. 

Stachys coccinba, Jacq.; Benth. in DC. Prodr. 12, p. 467. Near the San Pedro river and in 
other parts of Sonora ; also in Chihuahua ; Thurher. Tubac, Sonora, March ; Parry. Copper 
Mines, New Mexico, August; Bigelow. (No. 1527, Wright.) Our plant is smoother than the 
ordinary of the species. We have specimens of a Stachys, collected by Dr. Bigelow in rocky 
places near the Limpia mountains, which we think is a variety of S, coccinea, but the flowers 
are much smaller. 

Stachis A0EABIA, Cham. <& Schlecht. in Linnma, 5, p. 100 ; Benth. I. a. p. 479. S, umbrosa, 
Scheelein Linncp-a, 22, p. 595. Near Santa Antonio, and in other parts of Texas; Wright, 
No. 1535. 

Stachys palustbis, Linn.?; Benth. I. c. Near San DiegOj California, May; Thurber. 

T»iCH(STBMA LAKATTJM, Benth. Lab. p. 659. (Tab. XL.) Solidad, above San Diego, Cali- 
fornia, June — July ; Parry; also found near San Antonio, in the same State, by Dr. Andrews. 
Pubescence purplish and velvety. Stamens exsevted two inches. Plant fragrant. 

Trichostema DiCHOioMtiM, Linn. Benth. I. c. Western Texas. (No. 1541, Wright.) 

Tbtraclea Codlteki, Gray in Sill. Jour. (2 ser.) 16, p. 97. (Tab. XLI.) Eocky hills on the 
Bio Grande, from Eagle Pass upward to El Paso ; July — October. Sierra del Pajarito, June, 
Schott, and San Bernardino, Sonora, April; Capt. E. K. Smith. Mr. Bentham having in a 
recent letter communicated to me his opinion that Tetraclea is a true Labiate plant, and hardly 
distinct from Trichostema, Dr.Graymakes the following remarks: " Tetraclea Coulteri is most 
nearly allied to Trichostema, § Oilhopodium, as Mr. Bentham suggests. But it diifors in the 



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BOTAHY. 135 

equally spreading (not declined) lobes of the corolla, and the equal st-amene with parallel anther- 
cells. If the published character of Trichostema, and of the order were perfectly correct, it 
would also differ importantly in the amphitropous descending ovule. But in Trichostema, also, 
the ovules are amphitropous or between that and anatropous. The seed, however, is attached 
below the middle, whereas in Tetraclea it is attached above the middle ; but this is merely a 
difference of degree. The anthers are not drawn quite right in the plate. They are scarcely 
emarginate at the upper, but deeply lobed at the lower end, and perfectly opposite or parallel-" 

Teucbium Oanadensb, Linn. Senth. in DC. Prodr. 12, p. 581. Santa Cruz Valley Sonora ; 
Schoti, Thurher. West of Cerralbo ; Gregg. (No. 1542, Wright.) 

Tbucrium Oubensb, Linn.; Benth. I. c. p. 578. T. laciniatum, Torr. in Ann. Lye. N. York, 
2, p. 2iil ; Benth. I. c. Common in plains and low places throughout western Texas, N, Mexico, 
Sonora, etc., June — September. (No. 1544, Wright.) 

BORAGINACE^. 

CoRDiA roDOCEPHALA (n. sp.): ramalis teretibus subcapitatis ; foliis ovato-Ianceolatis obtuei'us- 
culis basi angusto-cuneatis grosse serrato-dentatis utrinque ramulisque scabro-hirautis ; pedun~ 
culis axillaribus terminalibusque elongatis erectis ; capitulis globosis ; calyce ovato strigoso 
acute 5-dentato. Near San Antonio, Texas ; October ; also prairies and alluvions of the Eio 
Urande from the San Pedro to the Pecos ; Schott. Plains and grassy places, Piedra Pinta 
Texas ; September — October ; Bigtlow. Near Monterey, Mexico ; Gregg, Dr. Edwards. (Nos. 
456 and 1510, Wright.) 

Plant 1-2 feet high, nearly simple or moderately branched. Leaves 1-1^ inch long, 'ind 
3-5 lines wide ; 4-6-tootlied on each margin ; scabrous on both sides, with short appresaed 
hairs, which commonly arise from an elevated base. Peduncles solitary in the axils, 2-6 
nches long. Heads (exclusive of the corolla) about one-third of an inch in diameter ; the 
flowers closely aggregated. Corolla funnel-form, with a short tube, half an inch long and of 
equal diameter ; white or pale rose color ; the lobes short and slightly emarginate. Fruc- 
tiferous calyx somewhat enlarged, the teeth triangular-ovate. Stamens included. Style long 
and filiform ; the apex twice 2-cleft. Ovary 4-eelled, the ovules ascending. Drupe about the 
size of a hempseed (Canabis); pulp very thin ; endocarp reticulate-pitted. Cotyledons distinctly 
plicate longitudinally. Apparently allied to C. patens. An undescribed species of this genua 
was found by Gregg in the Balson do Mapimi. It may be thus characterized: 

COEDiA Gregqii, (n. sp.): ramoeissima, scahro-pubescens ; foliis ohovatis obtusia dentatis 
plicato-rugosis, hasi longe cuneatis ; cymis contractia subcapitatis paucifloris ; laciniis calycis 
setaceis tubo campanuiato brevioribus ; corolla glabra infundibuliformi-campanulata. In the 
northern part of the Balson de Mapimi, flowering in April. A shrub 5-8 feet high. Leaves 
scarcely half an inch long, of a pale greenish gray color. Peduncles terminating the leafy 
branches, an inch long. Cymei 8-12-flowered, the flowers at first in a dense head, but after- 
wards unfolding a little. The upper part of the 5-6-toothed calyx clothed with short blackish 
hairs. Corolla more than an inch in diameter, white ; the lobes obtuse and entire. Stamens 
5-6, scarcely half the length of the corolla. Ovary tapering to a long slender style. Ovules 
ascending. This species connects the sections Dasycephalee and Cordiopsis. It is allied to 0. 
parvifolia, but haa a much more contracted inflorescence. 

CoRDlA BotssiBEl (Alpk. DO. Prodr. 9,j:>. 478,): foliis ovatis utrinque obtusis vel apice acuti- 



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136 UNITED STATES AND MEXICAN BOUNDARY. 

usculis; interdum serrulato-repandia eupra scabriuscule pubeseentis aubtus veliitino-tomeDtosia ; 
pednncalis corymbosiy rufo-tomentosis ; calyce cylindraceo-ovato, dentibiis siibulato-aciiminatia ; 
corolla inf'undibulii'ormi calycs duplo-longiore glabriuscula, Near Monterey, Mexico ; Dr. 
Edwards, Gregg. New Leon ; Tkurber. May. Cretaceous hills aroimd Ring-gold Barraiiks 
on the Rio Grande ; Schoit. (No. 304, Berlmidier.) A shrub or small tree, eoraetimes attaining 
a height of 15 or 20 feet. Leaves 3-4 inches long, and 2-3 inches wide. Flowers in terminal 
corymbs. Corolla an inch and a half long, white, with a yellow centre. Stamens 5, shorter 
than the corolla ; filaments slender ; anthers oblong. Style twice bifid ; the lobes obtuse, 
flattish. Fruit enclosed in the enlarged calyx, oblong, with a thin pulp. Endocarp thick and 
bony. Albumen none; cotyledons foliaceous, much plicate and veiny. The Mexicans call this 
plant Nacahuita. Dr. Gregg says that the fruit is eaten by cattle and hogs, and that a decoc- 
tion of the leaves is used for pains in the limbs. It is closely allied to C. Sebestena, Linn. (C. 
speciosa, WUld., which grows on Key West); but differs in the soft velvety undersurface of the 
leaves, the shorter calyx with more pointed teeth, etc. 

EiiRETiA ELLiPTiCA, DC. Frodr. 9, p. 503. Texas ; Wright. Near Corpus Christi ; Mlajor 
Ealon. Near Monterey, Mexico to Oamai-go ; Gregg. Santa Eosa, Chihuahua ; Bigeloiu. 
Between Ringgold Barracks and the mouth of the Kio Grande; Sohott. September. (Nos. 
233, 236 and 900, Berlandier.) A tree 20-30 feet high, and often nearly a foot in diameter, 
with gnarled branches. Flowers sometimes tetramerous. Fruit the size of a large pea, yellow, 
with a thin edible pulp. 

Ptilocaltx Geeggii, Torr. & Gray, Bot. Pope's Mep. p. 14, (. 8. Rocky places on the Kio 
Grande, from El Paso to the Presidio. (Nos. 492 and 1583, Wright.) A shrub 1-3 feet high, 
with small oval leaves ; remarkable for the spherical clusters of flouers and plumose calyx- 
segments. 

Stegnocarpus canescens, Torr. d Gray, I. c.,p 13, (. 7. Coldenia? (Stegnocarpus)canesceiis, 
DC. Prodr. 9, p. 559. Dry hills near El Paso, etc., March— May. (Nos. 836, 959, 2256, 
2389, Berlandier.) 

TiQUiLiA BEBVIFOLIA {Nutt. herb.): annua; foliis ovatis, 3-4 veinia; staminibus inclusis. Torr. 
in Bot. V. S. Expl. Exped. tned. t. 12. Desert west of the Colorado, California, March ; Solwlt. 
This plant was found by Major Emory in 1846, in the same desert ; hut his specimens were 
collected in the winter, and were too imperiect for determination. T. dichotoma, Pers., (Col- 
denia? dichotoma DC.,) differa in being suffrutesceut and in having lanceolate leaves. Late in 
the season the leaves become rigid and hispid. The remarkable character of the lobed coty- 
ledons in this genus was pointed out to my friend Dr. Gray many years ago. It is fully 
described in the Botany of the United States Exploring Expedition. Mr. Bentham has noticed 
it in Book. Jour. Bot. <& Keio Miscell. 3, p. 296. 

Var. PLicATA : foliis oblongis utrinque 5-T-veniis plicato-rugosis. With the preceding. 
Leaves remarkably plicate between the veins. Late in the season the stem of this becomes hard 
and ligneous, so that, without examining the root, the plant might be considered as fruteacent. 

Eddya mspiDissiMA, Torr. d Gray, Bot. Pope's Bep.p. 170, (. 9. Gravelly hills near El Paso, 
New Mexico ; March — May. (Nos. 485 and 1557, Wright,) 

Heliotrophtm Cdrassavicxim, Linn.; DC. Prodr. 9, p. 538. Sandy places, especially on the 



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BOTANY. 137 

banks of rirera throughout western Texas and New Mexico, and west of the Pacific ; flowering 
from April to September. Dr. Parry found it in abiiadance on the beach near San Diego. 

Heltothopium inundatl'm, Swarta Fl. Ind. Oc. 1, p. 343 ; Gray <& Engdm. Plant. Lindheim. p. 
18. Sandy plains, Eagle Pass, September ; Bigehio. Near the Pecos ; Schott. Dr. Edwards 
and Major Eaton found the plant near Monterey, Mexico, and Dr. Gregg at Matamoras. Alex- 
andria, Louisiana ; Dr. Hale. (Nos. 700, 917 and 2117, Berlandier. No. 1550, Wright.) All 
our specimens are evidently annual ; but De Oandolle has described it as fruticulose. The root 
does, indeed, as in many other annuals of this dry country, become quite woody late in the 
season. The nutlets are ovate and villous, and their face marked with 2 small ovate protuber- 
ances, hut with no foveoke. 

Heliotropium PHYLLOSTACHTUM (n. sp.) : auuuum, diffnse ramosum, strigoso-hirsutum ; foliis 
lanceolatis basi in petiolum brevem attenuatis ; spicis solitariis interrupte foliaceia ; floribus sessi- 
libus ; lobis calycis lanceolatis inequalibus ; coroHfe tubo longitudine calycie extus piloso ; 
antheris superne attenuatis apice puberulis ; nueulis subglobosis extus strigulosis intus bifoveo- 
latis. Western Texas, No. 1551, Wright. We have the same plant, collected near Monterey, 
Mexico, by Dr. Edwards and Major Eaton, and from Key West sent by the late Mr. Blodgett. 
It is also No. 1538 and 3038 of Berlandier, who collected it at San Fernando, Coliahuila. Plant 
more or less branched and diffuse; the branches 3-5 inches long, of a grayish aspect. Leaves 
6-8 lines long and 2-1\ lines wide, scabrously hirsute ; the hairs arising from a little callous 
tubercle. Spikes many-flowered; many of the flowers obracteate, others furnished with a large 
foliaceous bract which resembles the proper leaves. Flowers small : corolla apparently white, 
the lobes lanceolate and erect. Stamens inserted at the lower part of the corolla-tube ; anthers 
somewhat hastate. Stylo very short ; stigma conical from a broad base. Nutlets about half a 
line in diameter, with two deep pits on the face. It belongs to the section Ortliostachys. 

Hgliotropium GrRt!GGri (n. sp.J : suffruticosum, e basi ramosum, prostratum ; foliis lanceolato- 
linearibus obtusiusculis pilis brevibus adpressie hirsutis ; spicis paucifloris parce foliaceis brac- 
teatis, floribus sessilibus ; corolla calyce duplo longiore, limbo plicato, laeiniis brevissimis ; 
antheris apice barbulatis ; stigmate superne attenuate ; nueulis subglobosis hispidis facie bifoveo- 
latis. Sandy places near El Paso, April ; Bigdoio. Near Chihuahua, August ; Thwrh&r. (No. 
487 and 1548, Wright.) Valley of Oonohos, near Santa Rosalia, May ; Gregg. Boca G-rande, 
Caracalio, March — April ; Copt. E. K. Smith. Stems prostrate, 3-8 inches long. Leaves 
6-10 lines long, rarely 2 lines wide. Spikes at first distinctly circinate, mostly few-flowered, 
hut sometimes 15-20-flowered, irregularly foliaceous. Flowers on short pedicels, white, 
odorous. Corolla 3-4 lines in diameter, the limb spreading and strongly plicate; lobes short 
with intermediate shorter ones in the sinuses. Stamens inserted about the middle of the tube 
of the corolla ; anthers oblong, acute, at first coherent by their villous tips, but at length dis- 
tinct. Style very short ; stigma with a broad truncated base and tapering upward. Carpels 
hispid with short erect baire ; the face contracted and marked with 2 minute foveoles. Mr. 
Thurber informs me that the flowers are very fragrant, 

Heliotsopium akgustieolium (n. sp.) : suffruticosum, ramosissimum, ercetum, adprosso-hirsu- 
tum, incanum ; foliis linearibus vel Janceolato-linearibus acutis basi angustatis ; spicis dichotomis 
vel solitariis ebracteatis ; floribus brevissime pedicellatis post anthesin patulis vel nutantibus ; 
corollas tubo calycem sub^quante ; stigmate e basi subgloboso elongato ; nueulis subglobosis 
hispidis intus bifoveolatis. Western Texas and along the Rio Grande, south to Eagle Pass, 
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138 UNITED STATES AND MEXICAff BOUNDARY. 

March — October. Near Monterey, Mexico ; Dr. Edwards and Major Eaton. (No. 480 and 
1546, Wright.) Plant about a foot high ; often several sterna from one root ; branches terete, 
slender, erect. Leaves 6-10 lines long, half a line to a line in breadth, often crowded. Spikes 
at first short, but in fruit 2 or 3 inches long, slightly circinate when young. Calyx a little 
shorter than the tube of the corolla; the lobes lanceolate, equal, erect. Corolla apparently 
■white, about 2 lines long ; lobes lanceolate, acute, spreading, or somewhat erect. Stamens 
inserted in the middle of the tube of the corolla ; anthers oblong, smooth at the tip. Stigma 
elongated and narrow, from a somewhat dilated base ; style as long as the ovary. Nutlets often 
alternately smaller, with a narrow face, which is marked with 2 distinct pits. 

Hbliotropitjm limbatum, Benth. PI. Earttv.p. 20, No. 154; DC. Prodr. 9, p. 543. Murin, 
Mexico ; Tkurbet: San Carlos, Mexico ; Berlandier, No. 3199, Monterey, Mexico ; Dr. Edwards 
and Major Eaton. A small prostrate much branched species. Stem suffruticose. Leaves about 
3 lines long, cinerous, hispid, patulous. Spikes very short, few-flowered, mixed with leaves at 
the extremity of the branches. Limb of the corolla much dilated and undulate, angularly 
6-lobed. Anthers a little coherent and bearded at the tip. Style 3 times as long as the ovary. 
Stigma conical from a dilated subglobose base; bifid at the apex. This 3pecies seems to be 
nearly allied to H. humifusum, H. B. K. 

Heliotropium limbatdm, var. coneertifolium : caulibus robustioribus, ramulis suberectis ; foliis 
lanceolato-linearibus coofertissimis subappressis. Plains near Leon Springs, September ; Bige- 
low. San Vincente ; Parry. Cerralvo, Gregg. (No. 481 and 1547, Wright.) This is a much 
stouter and larger plant than Bentham's, and differs strikingly in its narrower, somewhat 
appressed and crowded leaves. Flowers pale purple {Gregg). 

Hbliotropium tenelltjm, Torr. in Marey Report, t. 14, Lithospermum tenellum, Nutt. Fl. 
Arlcans. in Trans. Amer. Phil. Soc. n, ser. 5, p. 189, L. angustifolium, Torr. in Ann. Lye, JV. 
York, 2, p. 225, non Michx. (where the nutlets are incorrectly described as smooth and polished.) 
High plains near Howard's Springs, and Kio San Pedro, western Texas, October ; Sohott. (No. 
1559, Wright.) Western Texas; Marcy. Prairies near San Augustin, Texas; Eeavenworth. 
On the Eed river, Louisiana ; Dr. Hale. Tennessee ; Mr. Curry. Plant about a foot high, often 
much branched. Leaves an inch long and 1-1^ line wide. Eacemes few-flowered, naked or 
somewhat leafy ; the flowers distant, conpicuously pedicellate. Calyx very unequally 5-parted ; 
the segments lanceolate-linear, in fruit much longer than the nutlets. Corolla white, 2^ lines 
long ; the lobes obovate-oblong and rather obtuse. Anthers oblong, slightly bearded at the tip. 
Stigma nearly sessile, oblong, tapering upwards, bifid at the summit. Nutlets subglobose, the 
upper part appressed-pubescent, below the middle (and often also above) reticulated, not verru- 
cose as represented in the figure quoted above, without foveoles on the face, 

Heliophytum parvifloetjm, do. Prodr. 9, p. 553. Heliotropium parviflorum, Linn. Plains 
near Eagle Pass, September, (fruit) ; Bigdow. Lower Eio Grande, in various places, April — 
May; Schoit. Monterey, Mexico; Dr Edioards, Gregg. We have specimens also from Key 
West, Florida, collected by Blodgett, 

Helxophytum (C(eloma) molle (n. sp.) : suffruticosum, griseo-velutinum ; foiiis deltoideo-ovatis 
basi in petiolum abrupte angustatis margine undulatig ; pedunculis terminalibus bifldis spicis 
conjugatis nudis scorpoideis ; floribus sessilibus ; calycis lobis lanceolatis corollfe tubo pauUo 
brevioribus ; coroUfe lobis obtusis crenulato-uudulatis: fructu subglobose velutiuo apiee integro. 



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BOTANy. 139 

locuiis in utroque segmento lateralibus lacuna magna centrale interposita. Plains near Presidio 
del Norte, August, fl. and fr. ; Bigelow. Plant about a foot high, the stem a little woody at 
the base. Leaves alternate, 2 inches long, and an inch or more wide, clothed (like the stem) 
with a soft velvety pubescence, the veins underneath very distinct. Spikes 1^-2 inches long, 
and not much elongated in fruit, at first strongly circinate, the flowers closely approximated. 
Corolla about 2^ lines long, white, infundibuliform. Anthers oblong. Stigma subsessile, 
conical from a broad base, pubescent. Fruit about 2 lines in diameter, segments 2-seeded, with 
a large central laciine interposed, besides 1-2 smaller lateral ones. 

Heliophytum (C(BLOMa) glabriusculum (o. sp.) : caule herbaeeo ereeto c basi ramoso adpresse 
piibescente ; foliis altevnis lanceolatis, obtusiusculis basi in petiolum attenuatis utrinque viridis 
glahriusculis ; spicis solitariia geminatis vel ternatis, jnnioribus scorpoideis ; floribus brevissime 
pedicellatis approximatis ebracteatis ; calycis lobis lineari-lanceolatis ; coroUte lobis oblongis 
obtusis ; fructu compresso snbdidymo puberulo apice integro ad suturas late excavate, segment-is 
disperrais, lacuna centrali interposita prfeterea lacunarum 2 minorum lateralium. Sandy plains, 
Eagle Pass, September ; Bigelow. (No. 1549, Wright.) About a span high ; the lower branches 
spreading and perhaps prostrate. Leaves an inch long and 2-3 lines wide, a little hairy on the 
midrib underneath, the rest nearly smooth ; the margin somewhat undulate. Peduncles terminal, 
hearing from one to three spikes, which are about an inch in length. Corolla white, the border 
dilated, deeply 5-lobed ; the lobes slightly undulate. Stamens inserted about the middle of the 
tube ; anthers sessile, fixed near the middle of the back, lanceolate, acute. Stigma about as 
long as the subglobose ovary, nearly sessile, conical from a broad annular base. Fruit didy- 
mous, the apex truncate, concave and 4-6 -denticulate ; the segments sometimes only l-seeded 
by abortion, with 3 empty cells, the central one (near the commissure) larger, the others lateral 
and much smaller. 

EuPLOCA CONVOLVDLACBA, Nutt. in Tratis. Amer. Phil. Soo. n. ser. 5, p. 189; Hook. lo. t. 651 ; 
Torr. in Marcy's Rep. p. 294, t. 15. Valley of the Kio Grande, from Presidio del Norte up- 
wards, July — October. Chihuahua; Ihurber. {Wright, No. 1553.) In the centre of each 
division of the fruit there is a small empty cell or lacuna, which is seen only when a cross section 
is made midway between the base and the apex. This genus is intermediate between Tourne- 
fortia § Arguzia, and Heliophytum. 

Macrombria vikidifloka, DC. Prodr. 10, ■p. 68? Copper Mines, New Mexico, June — August; 
Bigelow, Thurher. (No. 1558, Wright.) Plant two or three feet high; erect. Stem hispid with 
spreading hairs. Leaves ovate, lanceolate, 2-3^ inches long, and 6-12 lines wide, the 
upper surface hispid with hairs which arise from an elevated callous base ; the under side either 
hispid or somewhat softly villous with closely appressed hairs. Flowers nearly an inch and a 
half long, tubular-funnelform, greenish and very hairy externally ; yellow inside. Calyx 
about one-fourth the length of the corolla; the divisions much elongated in fruit. Stamens at 
first included, but at length exserted. Nutlets ovate, more than a line long, smooth, and shining. 
Our plant agrees sufficiently well also with the description of M. viridiflora. 

Onosmodium Caroliniasum, do. Prodr. l(S,p. 70. San Antonio, Texas; Thurber. We have 
intermediate forms which seem to connect 0. Virginiana and 0. moUe with this species. 

LiTUosPERMUM cANESOENS, Lekm. Asp. 2, p. 305 ; DG. Prodr. 10, p. T8. Copper Mines, New 
Mexico, and Mountain Arroyos, near Camp Bache, June — July — August ; Bigelow, Thurber. 



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140 UNITED STATES AND MEXICAN BOUNDAKY. 

Sierra San Luia, Chihuahua, September ; Scliott. No. 1653, Wright, seems to be only a narrow- 
leaved form ol' this species. 

LiTHOSPEEMUM LOSGiFLORUM, Sprenff. St/it. l,p. 554, L. incisum, Lehm. I, c. Pentalophus 
longiflorus, DG. Prodr. 10, p. 86. Bants of streams, canon of Guadalupe, Sonora, April; 
Captain E. K. Smith. Near the Copper Mines, Ben Moore, Santa Barbara, and Mimbres, April; 
Bigelow. Apache Springs, March; Parry. Hueco mountains, Texas, and Ojo de Vaca, Chi- 
huahua; Thurber, Nutlets ovate, white and shining, marked more or less with shallow pits. 
After flowering the plant becomes more branched, and produces narrower and more crowded 
leaves. 

LiTHOSPERMUM BREViFLORUM, Engltii. & Gray, PI. Lindh.p. 44. Western Texas; {Wright, ^os. 
1560 and 1561.) Nutlets as in the last. 

LiTHOSPEBMOM Matamorbnse, DO. Pvod.T, 10, p. 76, On the Lower Rio Graade; ( Wright, No. 
1564.) Near Monterey, Mexico; Dr. Edwards and Major Eaton. Our plant agrees very well 
with Berlandier's own specimens. 

Amsinckia LYCOPSOiDES, iMm. Del. Sem. H. Ho.mh. 1831,^. T; DG. Prodr. 10,^. IIT. Jour- 
nado between Tucson and the Gila, Sonora ; also grassy places near San Diego, California, 
March; Parry. 

Amsinckia INTBRMBDIA, Fisch. & Mey. Ind. 2, Sem. Petrop. 1835,^. 26; BG. I. c. Alluvions 
of the Gila, Sonora, and near San Diego, California, March ; Parry. The insertion of the 
stamens is not constant in this genua. In the same species they are sometimes placed near the 
base of the corolla ; sometimes in the upper part of the throat. PerhapK all the species with 
rugose nutlets are tbrms of A. lycopsoides. 

Eritriciiium glombratum, DC. Prodr. 10, p. 131. Myosotis glomerata, NiiU, Gen. 1, p. 112, 
Hooh. Fl. Bor.-Amer. 2, p. 82, (. 162. Near El Paso and Doiia Ana, March— April. (No. 1566, 
Wright.) New Mexico ; Fendler. No. 632, About a foot high. Root perennial. Hairs of the 
calyx and of the upper leaves yellowish. Nutlets closely fitted to each other, forming a depressed 
globose fruit, margined; the back strongly rugulose transversely and more or less verrucose. 

Var, iiispiDissiMOM is more hispid, and seems to be biennial. Common in New Mexico. 

Eritrichium Jamesii, To'it. in Marcy Bep, p. 294, Myosotis enffrutieoaa, Torr. in Ann. Lye, 
Neio York, 2, p. 225, Near the Copper Mines, New Mexico, and Mule Springs, March — 
June, El Paso, and Journado del Muerto, March — April ; Thurber. Dry ravines, San Luis, 
Sonora, April ; Captain E. K. Smith. 

Eritiiichi[jm 1IELI0TROPI0IDE3. Antiphytum heliotropioide , Alph. DC. in Prodr. 10, p. 122. 
Sandy shore of the Rio Grande at Eagle Pass; ScJiott. No. 1513, Wright. Valley of the Lim- 
pio; Bigeloiv. Dry plains southwest of Escondido, May, (1847,) and Saltiilo, (1848 and 1849;) 
Dr. Gregg. Our specimens agree in all respects with Berlandier's, The leaves are not opposite, 
and we have little doubt that the plant should be referred to Eritrichium, § Eutidocaryum, 
The root is annual, but in old plants the stem becomes hard and ligneous, 

Eritrichium (Rotidocarium) floribunduh (n, sp^) : caulibus erectis basi simplicibus superne 
paniculatim ramosissimis foliiscLue adpresse cinereo-pubescentibus; foliis lanceolatis seu lineari- 
bus acutiuBCulis; racemis brevibus paniculatis paucifloris parcebracteatis; corolla campanulata, 
lobis rotundatis; nuculis late-ovatis acutiusculis densissime verruculosis. Mountains of Puerte 
de Paysano, September, fl. andfr,; Bigelow. Also in low places near Rock Creek, Boot 
apparently perennial. Stem 2-3 feet high. Leaves 1-1^ inch long ; the radical ones 3-4 
lines wide, lanceolate or lanceolate-spatulate ; the cauline 1-2 lines wide. Racemes lateral 



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BOTANY. 14X 

and terminal, forming a long, somewhat contracted panicle, 3-8-flowered, at first circinate ; 
flowers approximated, on short pedicels. Segments of the calyx linear, somewhat hispidl.7 
pilose. Corolla white, about one-third longer than the calyx ; the tube very short ; border 
much dilated. Stamens scarcely exserted. Nutlets nearly a line long, the face acutely carinate, 
and a small prominence near the base, where it is attached to the style; the back strongly convex. 

Eritrichiuji pusillxim, Torr. (& Gray, in Boi. I>ope Sep. p. 15. Dry hills and rocky places 
near El Paso, March ; Bigehw, Wright. Santa Maria, Chihuahua, March ; Parry. 

Eeitrichium crassisepalum, Torr. d Gray, I. c. Dry soils in various places along the Eio 
Grande, from Eagle Pass upward to EI Paso, westward to Oaudalupe Pass, Sonora, March- 
April. 

Eritriohium MicEABTnoM (n. sp.): annuum, pusillum, canescenti-hispidnm ; canle e basi 
ramosiesimo ; foliis linearibtis obtusis ; racemis brevibus louge bracteatis ; floribus confertig, 
corolla minutissima, fauce undo ; nucnlis oblongis acutinsculis glaberrimis dorso convexis 
angnlo interne prominente snlcato. Sand hills, Frontera, Texas, and in other places along 
the Bio Grande, March— April ; Thurber. (Wright, No. 1565.) Stem 2-4 inches high, much 
branched from the base, and apparently diffuse when old : the branches very slender. Leaves 
3-4 lines long, and scarcely more than half a line wide. Kaccmes at first capitate and crowded 
with short leafy bracts, unfolding gradually, but never more than half an inch long, the 
flowers so close together as to be imbricated, with foliaceous bracts at the base longer than 
the calyx. Segments of the calyx linear. Corolla less than a line in length, separating early from 
the base, but remaining on the flower lito a calyptra, the tube narrow, and about as long as the 
calyx ; no traces of appendages ; the lobes small and ovate. Stamens inserted about the middle 
of the corolla-tube, nearly sessile. Nutlets about one-third of a line long, narrowly oblong, 
shining, apparently adhering to the column (which is very broad at the base,) by the whole 
length of the suicate inner angle. This species is allied to Krynitzkia, and also to the section 
Cryptantha of Eritriohinm, differing from the first in the persistent calyx, and in wanting the 
appendages of the corolla, from the latter in the homomorphous flowers and smooth nutlctl 

EaiTRicHIUM AMUaTUOHPJI, Torr. in. Paeijic Eailroad Bqjorl,, 6, p. 363. On the Eio Gila ; 
ThurUr. Canon of Guadalupe Mountain, Sonora ; Oapt. E. K. Smith. The segments of the 
calyx are much elongated after flowering, when they become almost subulate. One of the nntlets 
is sometimes larger and smoother than the others. Differs from E. crassisepalum in the longer, 
denser, and naked racemes ; in the nntlets being wholly or nearly homomorphous, oblong, Ind 
only very minutely scabrous. 

Eriirichiom Chobisiahum, DC. Prodr. 10, p. 130 ? Grassy hills near Sau Luis Bey, and on 
mountains east of San Diego, California, March-June; Parry. The plant from the former 
station is much larger, with radical leaves 3 inches long and 3-4 lines wide. Specimens laid in 
the herbarium give out, after some time, a purplish material, which leaves the imprint of the 
plant on the paper. The coloring matter is of a resinous or tetebinthine nature and is quite 
soluble in alcohol, so that it is not a kind of indigo. It is contained in cells which are situated 
along the margin and on each side of the midrib. In the dried plant the color is of a bright 
ted. "We have a strong suspicion that E. Californicum, E. Chorisianum, and E. Scouleri are 
not distinct, 

Pectocarya Chilbssis, do. Prodr. 10, p. 120. California, (the station not recorded, but 
probably near San Diego ;) Pm-ry. 



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142 UNITED STATES AND MEXICAN BOUNDAllV. 

Krtnitzkia lbiocaepa, Fisck. c& Mey. Ind. 1, 8em. H. Petrop. 1841, p. 52. Grassy hills iicu,r 
San Luis Bey, February ; Parry, Also found in California by the liev. A. Fitch. 

EoHiNOSPEEMUM DBFLBXUM, Lehiu. Asp. No US : Var. lobis calycinis ohlongo-linearibus. Hills 
near the Copper Mines, New Mexico, August, fl. & fr.; Bigelow. This differs from my Euro- 
pean specimens of this species in the narrower lobes of the calyx ; but they are nearly as broad 
as those of E. secundum, Kar. d Kir., which Alph. DO. refers to B. deflexum. In specimens 
of the latter from Altai, (collected as I think by Bunge,) the nutlets are somewhat heteromor- 
phous, two opposite ones having rather a broad margin, which is pectinate with flat glochidiate 
prickles ; the other two are smaller, with a much narrower margin and shorter prickles. Our 
plant has a biennial root. The stem more than 2 feet high. Lower leaves 2 inches long and 
o-T lines wide, villous with spreading hairs. Racemes numerous, forming a loose terminal 
panicle, bracteate to the summit. Pedicels closely deflexed. Corolla salver-form, 2 lines long, 
with a short tube and obtusely 5-lobed border ; the throat furnished with 5 very prominent tuber- 
cles. Nutlets homomorphous ; the aculei marginal only, in a single series, confluent at the base. 

EcHiNOSPBEMTJM PATULUM, Lehiii. Asp. No. 95. Gravelly and sandy soils. Valley of the Rio 
Grande, from El Paso to Eagle Pass, and west to the Gila. Usually about a foot high, and 
much resembling E. Lappula. 

EcHXNOSPERMUM STKiCTUM, JVees, in Maxtmill. Trav. App.; Torr. <& Gray in Bot. Pope Sep. p. 
15. E. Tesannm, 6'ckeele in Linnma 25, p. 260. Cynoglossum pilosum, NuU. Gen. l,p. 114 ? 
Near San Antonio, Texas ; TTiurher. Western Texas ; Wright, No. 1573. Nutlets with an 
inflexed border and a deeply depressed disk ; almost as in Omphalodes. Flowers pale blue. 

Eritrichidm PTEROOABYUM, (n, sp.,) Torr. in Bot. U. 8. Expl. Exped. t. 13, ined. Hills and 
rocky places near El Paso, etc.; Bigeloio. {Wright, No, 1570.) This species was first detected in 
Oregon by Dr. Pickering while connected with the United States Exploring Expedition. It is 
about a foot high and remarkable for its conspicuously winged fruit, the wings being as broad 
as the body and more or less toothed above the middle. In the Oregon specimens, and in some 
of those from New Mexico, one of the nutlets is apterous, 

Cynoglossum srahdb, DougL; Hook. Fl. Bor.-Amer. 2, p. 85. Napa valley, California, 
March ; Ihurber. Also found by Mr. Fitch in the same State. 

HYDROPHYLLACEJi;. 

Nemophila pbduncdlata, Bentk. in Linn. Trans. 17, p. 275? Napa valley, California ; Thur- 
her. This is the same as No. 480 of Coulter's Califoruian Collection, It is named N. parviflora 
by Dr. Harvey, (MSS.,) but differs irom that species in the seeds being more numerous (10-13) 
and tuberculate, not 4, and impressed-punctate. The arillus is calyptriform in both species. 
The leaves, too, are usually 7-9-lobed in N. pedunculata, and only 5-lobed in N. parviflora. 
Alph, De Candolle (in Prodr.,) remarks that he found the placenta 2-ovulate in both species, 
and Fischer & Meyer (1. c) think they are not distinct. They may have examined a different 
plant from the one here noticed, probably a mere variety of N. parviflora. 

Nemophila aurita, Lindl. Bot. Reg. t. 1601 ; Alph. BO. Prodr. ^,p. 290. San Diego, Cali- 
fornia ; Parry. San Pasqual, in the same State, May ; Tkurher. 

Nemophila LiNiFLORA, Fisch. <& Mey. Sert. Petrop. t. 5. Dana's Ranch, and grassy plains 
below Los Angelos, March ; Parry. Napa Valley, May; Thurher. 



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BOTANY. 143 

Ellieia mbmbranacea, Senth. in Trans. Linn. Sac. IT, p. 'ili ; Alph. BO. I. c- p. 292. MoiKt 
shady places, San Diego, California ; Parry. Coulter's No. 470 is the same. 

Ellisia CHRTfsANTHEMiFOLiA, Beutli. I. c; Alph. DC. I. c. Santa Barbara, California, 
and near Tucson, Sonora ; Parry. Our specimens agree with Douglas' original ones, except 
that the flowers are more developed in the former than in the latter. The corolla is nearly twice 
as long as the calyx. 

Phacelta ciRcmATA, Jacq. fil. Ed. 1, p. 135, t. 91, & Alph. .DO. Prodr. 9, p. 298. Dry hills 
near Santa Barbara and Monterey, California, April — May ; Parry. 

Phacelia ixteoripolia, Torr. in Awn. Lye. New York, 2, p. 222, t. 3. Near El Paso, etc., 
March— April, and Chihimhua, Aiigust; TJmrber. (No. 1581, WrigliL) The specimens from 
these stations resemble the original plant; but others, from the Mimbres and Sonora, have the 
leaves more or less deeply pinnatifid and the segments often toothed, (as in No. 15T9, Wright,) 
so that the specific name is not appropriate. The capsule is globose. The four seeds are oval, 
rough, with minute warts on the back, and the face is strongly corrugated transversely, as well 
as marked with a longitudinal ridge. 

Phacelia congesta, Hook. Bot. Mag. t. 3452 ; Alph. DO. I. c. Rocky hills near Camp Bache, 
and near the Copper Mines, July— August; Bigelow. Near San Antonio, Texas, April— May; 
Thurher. Nos. 1574, and 157(5, Wright; also, ? 1755, a dwarf form. 

Phacelia tanacetifolia, Benih. I. c; Alph. DG. I. c. Hills near Monterey, California, May; 
Parry. San Diego, May; Thurher. Var. tbnuipolia. P. tenuifolia, Stn?. MSS. PI. Cmdt. 
San Diego and other places in California, March ; Pan-y, Thurher. This is surely only a slender 
leaved var. of P. tanacetifolia. Var. latieolia: foliis segmentia ovato-oblongis grosse dentatis. 
Mountains east of San Diego, June; Parry. 

PnACELiA NEOMEXiCAi'A (Thurh. MSS.) : erecta, pills patentibus pubescentia viscosa interm,ix- 
tis ; foliis pinnatisectis, segmentis valde inequalibusj utrinque 4-6 cum imparl oblongis inciso-den- 
tatis, lobis ovatts subdentatis acutiusculis ; racemis spiciformibus densifloris corymbosis ; floribus 
Bubsessilibua ; lobis calycis oblongis ; corolla calyce subduplolongiore campanulata, margine 
eroso-dentata ; staminibus vix exsertis. Pine woods near the Copper Mines, New Mexico 
August; Thurher. (No. 1577, Wright.) Stem 1-2 feet high, hispidly pilose and viscidly 
pubescent. Leaves 3-4 inches long, thin, the segments rather distant, about an inch long. 
Calyx not enlarged in fruit. Corolla about 3 lines in diameter, the appendages near the base 
with their free margins reflexed. Filaments smooth. Style hairy below. Capsule globose-ovate. 

Phacelia (Eutoca) loassfolia. Eutoca loasjepolia, Benth. I. c. Monterey, California, May ; 
Parry. Also found by Kev. Mr. Fitch, but the station not recorded. We strongly suspect this 
to be only P. malvajflora, Gham. & SchlecU. in Linnaia, i, p. 494. The only discrepancy is the 
number of seeds said to occur in that species ; but there may have been more ovules, only part 
of which ripened. 

Phacelia (Ectoca) viscida. Eutoca viscida, Benth. in Bot. Meg. 1. 1808. Cosraanthus viscidue, 
Alph. DO. Prodr. 9, p. 296. Bushy places near Santa Barbara, California, March. " Flowers' 
yellowish," Parry. Eutoca albiflora, Nutt. PI. Gamh., seems to be scarcely distinct from 
this species. Mr. Nuttall described from dried specimens, and was not sure that the flowers were 
white. 

Phacelia (Eutoca) Douglasii. Eutoca Douglasii, Benth. I. e. Sand hills, Dana's Ranch, 
California,-March ; Parry. Sepals lin ear-spa tulate. Stamens included, "dilated at the base' 



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144 UNITED fiTAlES AND MEXICAN BOUNDARY. 

where they are united to the appendages of the corolla ;" Thurher, MS8. The corolla is pale 
purple, not " luteaceuB?" as Alph. DC, supposed it to be. 

Phacelia (Eutoca) Parryi (ii. sp.) : parce hispida, pilis longis patentibus pubescentia viscosa 
intermixtis ; foliisovatis grosse inequaliter serratis ; racemis pluriflorie foliie multo iongioribus ; 
pediceliis caJyoe fructifero 2— 3-plo Iongioribus ; lobits calycis anguete-linearibus corolla ampla 
campaiiulata duple brevioribus ; filamentis basi squamte corollse adnatis ; placontis 20-25-ovu- 
latis. Mountains east of San Diego, California, June ; Parry. Stem 1-2 feet high, apparently 
erect. Leaves l-lg inch long, tapering at the base to a petiole which is 6 or 8 lines long. 
Racemes at first circinate, when in fruit nearly a foot long. Pedicels about an inch in length, 
spreading horizontally. Segments of the calyx a little dilated upward. Corolla two-thirds of 
an inch in diameter, purplish, the lobes rounded and entire. Stamens scarcely exserted ; the 
filaments with a small truncate or bidentate adnate scale at the base. Capsule ovate, rather 
acute, containing about 40 oblong and scabrous seeds. As remarked in the Botany of Parkea' 
P. R, K. Report, this species seems almost intermediate between Phacelia (Eutoca) and Whitlavia. 
It has the corolla of the former, with the long pedicels and coroUine scales of the latter. 

PUACBLIA (Eutoca) infundibulipoemis (n, sp,): annua, erecta, hispida, pilis rigidis patentibus 
pubescentia nigra viscosa intermixtis ; foliis pinnatifidis, segmentis 7—9 inciso-lobatis, lobis 
obtusis integris vel dentatis ; racemis scorpioideis plerumcLue bifidis multifloris, floribus congestis 
brevipedicellatis ; lobis calycinis spathulatis ; corolla semiquinquefida, lobis integris, tubo infun- 
dibuliformi ; plaeentis 10-12-ovulatis. Overhanging rock on a mountain near Lake Santa Maria, 
Chihuahua, April ; Bicjdow, Wright. Plant 6-8 inches high, somewhat branching from the 
base. Leaves 1-2 inches long in Bigelow's specimens, somewhat longer in Wright's. Spikes 
30-10-flowered, when in fruit 2^-4 inches long; the flowers very closely approximated, on 
pedicels a Hoe or more in length, Lalyx hispid and glaniliilarly pubescent, the segments unequal, 
about two-thirds the length of the corolla, linear-spatnlate, obtuse. Corolla pale purple, 2^ 
lines long, the tube narrower and funnel-form ; lobes rounded. Stamens included, with a pair 
of oblique folds near the base of each filament. Style 2-cleft about half its length, hairy at the 
base. Fructiferous calyx nearly the length of the obtuse capsule. Seeds about 20, oval, com- 
pressed, scabrous, with an elevated ridge on the face. This species is remarkable for its funnel- 
form corolla, in which character it resembles the section Conantbus of Eutoca {Alph. DG. Prodr.) ; 
but the habit of the plant is different from that of E, aretioides. Wright's specimens have a ■ 
laxer habit, as well as larger and more membranaceous leaves tli an Bigelow's, probably from 
having grown in a shady place, 

Phacelia (Eutoca) Dohglasii. Eutoca Douglasii, Benth. I. c. : Alph.DG.l. c. Sandhills, 
Danas' Ranch, California, March; Parry. 

Phacelia michantha (n. sp.) : annua, erecta, gracilis, parce glanduloso-pubescens ; foliis 
pinnatifidis, segmentis 5-9 obovatis obtusis integris vel 1-2-dentatis ; petiolis marginatis basi 
auriculatis ; racemis simplicibus rel bifidis paucifloris ; calyce pedicello subiequali, segmentis 
obovato-oblongis obtusissimis, corolla late campanulata calyce vix loogiore campanulata ; pla- 
eentis 8-12-ovulati8 ; seminibus oblongo-cylindricis incurvis transverse valde rugosis. Stony 
hiiis, near El Paso, March ; Bigeloio. Santa Cruz, near Tubac, Sonora ; Parry. (No. 1582, 
Wright.) Plant 4-8 inches high, moderately branching. Leaves about an inch in length 
contracted below to a narrowly winged petiole and then dilated and auriculate at the base. 
Flowers distant, 1^ line in diameter, the pedicels slender and a little spreading. Calyx some- 
what enlarged in fruit. Corolla pale purple ; the 10 appendages minute, transversely lunate. 



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BOTANY. 1 45 

Heeds ofteu 20-24, with deep transverse rugae so, as to appear articulated. A very distinct 
species, wliich was found by Dr. Bigelow, in Whipple's ExpeditioDj as far west as the Colorado 
cf California, but was omitted in the Botanical Report. 

PnACELiA CILIATA, Beiitli. I. 0. Urassy hills, San Luis Eey, California, February; Farry. 
San Diego ; Thurber, (a large state of the plant.) Hill sides, Sonera, Marcli ; Capt. E. K. Smith. 
Ojo de Yaca, Chihuahua ; Tliurber. 

Emmenanthb penduliplora, Benth. I. e. ; Alpft. DO. I. c. San Pasqual, California, May ; 
Tliwrber. Wo have also specimens of this rare plant collected by Dr. Andrews, near Monterey. 

POLE M ONI ACE j::. 

Phlox Drtimmondii, Hook. Bot. Mag. t. 3441; Benth. in DC. Prodr. ^,p. 305. Sandy placca, 
central and western Texas, June to September, 

Phlox speciosa, PursTi, Fl. 1, p. 149 ; Benth. I. c. p. 307. P. longifolia, Torr. in Stanslury 
Rep. . Gravelly hills, on the upper Eio Grrande. 

Var.? Stahsburyi: suffruticosa ; caule superne pedicellis calycibusq^ue glandulosa-puhescentibus; 
corolliB lobis oblongo-cuneatis obtusis vel emarginatis. Gravelly hills near the Organ Mount- 
ains, New Mexico ; Bigelow. San Luis Mountain ; Oapt. E. K. Smith. Plant about a span 
high, much branched from a ligneous base, hairy and glandular, or the leaves and lower part 
of the stem nearly smooth . Teeth of the calyx scarcely as long as the tube. Corolla rose-color, 
the segments often a little emarginate. Style two-thirds as long as the tube of the corolla. Cells 
of the ovary 2-ovuled. 

Phlox triovulata {Thurber JUSS.): canescenti-pubescens ; caule erecto suffruticoso e basi 
ramoso ; foliia anguste linearibus rigidiusculis ; calyeis laciniis subulatis tubo subEecLualihus ; 
corollfs tubo calyce tertio lougiore, laciniis obovatis margine stepe eroso-denticulatis ; stylo 
ovario subiequante ; loculis ovarii triovulatis. Eavines, Mule Spring ; Thurber, Bigelow. Rio 
Mimhres ; Dr. Henry. Escondido ; Parry. ITlowere from April to July. (No. 504, 1653, 
1654, Wright.) Plant 6-12 inches high, the lower part of the stem decidedly shrubby. Leaves 
1-1^ inch long, and 1-1^ line wide. Corolla white, |-1J inch in diameter. The tube nearly 
straight ; segments varying from nearly orbicular to obovate, sometimes with a short mucro. 
Style and its deep divisions scarcely as long as the ovary. Ovules superimposed. This is tlie 
only species of Phlox hitherto found in which there are more than two ovules in each celt. 

CoLLOMiA Q:&kcius,Dou,gl.; Benth. I. c. p. 308. New Mexico, Sonora, and California, March — 
May. 

CoLLOMiA GRAHDiELOEA, Douffl. in Lindl. Bot. Beg. t. 1174 ; Benth. I. c. p. 308. Mountains 
east of San Diego ; Parry. 

Navarrbtia ATRAcTYLoroEB, Hook. (& AiTt. Bot. Beech, p. 368 ; Benth. I. c, p. 310. Dry places 
near San Diego and Monterey-, California ; Parry. San Pasqual, May, Thurher. 

Navabretia Schottii (n. sp.): humilis ; foliis lineari-oblongis inciso-dentatis glabriusculis, 
dentibus pancis patentihus integris spinescentibus ; capitulis paucifloris ; corollEe tubo calyce 
sublongiore ; staminibus exsertis ; ovarii loculis 2-3-OTulatis. In the Colorado Desert, Sonora ; 
Schott. Plant 2 or 3 inches high, simple below. Leaves about three-fourths of an inch long, 
with 5-6 salient teeth on each side ; the involucral ones similar in form to the others. Flowers 
apparently white, sessile. Segments of the calyx subulate, terminating in a long slender spine, 
or rather bristle. Segments of the corolla oblong, acute, mueronate. The specimens were col- 
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146 UNITED STATED AND MEXICAN BODNDARY. 

lected very early in the season, and the more advanced state of the plant is doubtless consider- 
ably taller and more branching. 

GiLiA viRGATA, 8teud. Norn.; Benih, I. c. p. 311. Monterey, California ; Parry. This species 
is certainly an annual, 

GirjA GuNNisoNi, Torr. c6 Gray, in Pad/. Satlroad Expl. 2, (Bot. Beckw. d Gunnis.) p. 128, 
t. 9. Dry places along the upper Eio Grande and west to Soaora. (No. 1642 ; Wright.) 

GiLiA POLYCLADON (n. sp.): caulibus pluriraia subpatulis puberulis inferne nudinsculis apice 
foliosis cymoso-eapitatie ; foliis oblongis hirsutis pinnatifido-incisie segmentis oblongia plerumque 
integrie vel 1-2-dentatis ; calycis dentibus spinuloso-acuminatis ; coroUte tube calyce aubajq^uali, 
laciniis oblongis ; loculis ovarii biovulatia. Stony hills near El Paso, March, Annual, stenjB 
4-8 from one root, slender terete, somewhat spreading, simple and mostly naked, except at the 
summit, where they branch into a leafy cymose tuft. Leaves mostly radical, about an inch 
long, pinnately cut into 9-11 oblong spreading lobes, which are mostly simple. The leaves 
of the stem are similar to the radical, only they are smaller. Fructiferous calyx as long as the 
capsule. Corolla white, with a tinge of rose-color. Allied to G. inconspicua. 

GiLTA AcMiLLE^FOLiA, Bentk. I. c. 311. San Isabel, California, May ; Tkurber. 

GiLiA CAPiTATA, Bougl. i% Bot. Mag. t. 2698 ; Bentk. I c. Common in most parts of Cali- 
fornia, from Oregon to San Diego, usually not far from the coast. 

GiLiA MULTICADLIS, Bcntk. I. c. Near San Diego, March ; Parry. Perhaps only a variety of 
the last. 

GiLiA TRICOLOR, Bentk. I. c. Napa county, California ; Tkurber. 

GiLiA iNCOKSPicuA, Bougl. in Bot. Mag. t. 2883 ; Bentk. I. c. Sandy and stony places, banks 
of rivers, from the Rio Grande, particularly near El Paso, westward along the Gila to Cali- 
fornia. 

GiLiA iNOJSA, Bentk. I. c. p. 312. Central and western Texas to the Eio Grande, also in New 
Mexico, Chihuahua, and Neuvo Leon. Plant 12-18 inches high. It appears to be both 
annual and biennial. Flowers white. The radical leaves often form a cluster, and are much 
less cut than the stem leaves. 

GiLiA EiGiDULA, Bentk. I. c. Hill sides and rocky ravines, western Texas, New Mexico, and 
Sonora, March— May. (No. 1645, Wrigkt.) Perennial. Plant 4-10 inches high, branching 
from the base, viscidly pubescent or almost glabrous. Leaves mostly simply pinnatifid, with 
6-1 distant rigid and pungent segments, which vary from oblong-lanceolate to very narrowly 
linear. The flowers are nearly three-fourths of an inch in diameter. Corolla bright blue, 
yellow in the throat. Cells of the ovary with several ovules. 

GiLiA MULTiFLORA, Nwtt. PI. Gamb. in Journ. Acad. Pkil. (n. ser.) 1, p. 154, Hill sides near 
the Copper Mines, New Mexico, August; Bigelow. Sonora and Chihuahua, September; Sckoit. 
(NoB. M46 and 1647, Wrigkt: the latter with the tube of the corolla longer.) The stem rarely 
branches from near the root, except when the top has been injured. 

GiLiA AGGKEGATA, Spreng. Syst. 1, p. 626. G. pulchella, Dougl; Hook. Fl. Bor.-Amer. 2, p. 74. 
Cantua aggregata, Pursk, Fl. 1, p. 147. Eavines and rocky banks of the Rio Grande, parti- 
cularly near the Cibolo river ; also near the Copper Mines, July—September. (No. 1650 and 
1651, Wrigkt.) A very ornamental plant. We have restored the older specific nameof Pursli. 

Gila longiplora, G. Bon, Oard. Bid. 4, p. 245; Benik. I. o. Cantua longiflora, Torr. in 
Ann. Lye. N. York. 2, p. 221 (£ in- Sitgr. Pep. p. 165, t. 7. Common in western Texas, New 



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BOTANY. J 47 

Mexico, Chilmaliua and Sonora ; flowering throughout the spring anil summer. (No. £09, 
lf;48an(n649, Wright.) 

GiLiA DiANTiioiDES, Eiidl. AtaU. t. 29. Dry hills near San Diego, California, February ; 
Parry, Coronados Islands, California, May ; Thurber. 

(xTMA DICHOTOMY, Benth. I. c. Var. i'akwfloka : floribus multo minoribus ; corolHa inexpansis. 
Cook's spring, and near Frontera, Texas, March — April ; Bigelov}, Wright. About 6 inclies 
high. Leaves palmately 3-parted to the base ; segments subulate and somewhat rigid. Corolla 
much smaller than in the Californian plant, and it does nit seem to expand. In other respects 
I can find nothing to distinguish it. There are from 20 to 25 ovnlea in each cell of the ovary, 

GiLiA PHARNACBOiD.ES, Benth. I. c. Near the summit of the mountains east of San Diego, 
June ; Parry, 

GiLiA ATJRBA, Nutt. PI. Gamh. I. c. p. 155, t. 32. Copper Mines, New Mexico, April — May ; 
Parry. Journado between Tucson and the Eio Gila, March ; Parry. Ojo de Vaca, Chilina- 
hua ; Thurber. 

GiLlA LUTBA, Steud. I. c; Ben'.h. I. c; Bot. Mag. t. 4735. Mountains east of San Diego, June ; 
Parry. 

GiLiA ANDKOSACEA, Stciid. I. c; Benth. I. c. Napa county, California, March; Thurber. 

GiLiA DENSIFLORA, Benth. I. c. Grassy places near Monterey, California ; Parry. Not 
sufficiently distinct from G. grandiflora. 

GiLiA Califoenica, Benth, I. c. Leptodactylon Califbrnicum, Hook <& Am. Bot. Beech, p. 
369, t. 89. Near Santa Barbara, California ; Parry. This species is decidedly shrubby. Dr. 
Antieell found it growing at Santa Inez, 3-5 feet high, 

Poi.EMONiUM cffiRULEUM, lAnii.; Hooh. Fl. Bor.-Amer. 2, p. 71. Banks of the Mimbres, New 
Mexico, October, (in fruit) ; Bigelow, Stem 3 feet high, and, as well as the leaves glabrous. 
Segments of the leaves 1*1-21, lanceolate, acute, about an inch long. We find among our 
numerous specimens of this polymorphous species, some that accord very well with our New 
Mexican plant. 

L(ESELiA GLANDULOSA, G. Don, I. c. p. 248. Hill sides near Mt. Carmel, Chihuahua ; Dr. 
Parry. Neuvo Leon ; Dr. Edwards. Dr. Gregg found it near Saltillo, Coahuila. 

Nama dichotoma, Choisy, Deso. Ilydrol, ^. 19 ; & in DC. Prodr. 10, p. 182. Sandy prairies 
and along water courses, western Texas and New Mexico from DoEa Ana to the Gulf, and west- 
ward throughout the Mexican States to Sonora and California (No. 495, 1585 and 1586, 
Wright.) Very much branched, spreading or assurgent. Flowers pale purple, yellowish in 
the throat. Our plant resembles a Chilian specimen of N. dichotoma received from Dr. Arnott 
(which is part flowering), but differs from the description of Choisy in the corolla being half as 
long again as the calyx. 

Var. PAHViFOLiA : caule tenui laxiuscnle ramoso ; foliis (semiuncialibus) obovatis obtusis basi 
in petiolum brevem attenuatis ; floribus solitariis geminisque, pedicelHs calyce diraidio longiori- 
hus. Santa Rosa, Chihuahua, January ; Bigelmo. Monterey, Neuvo Leon ; Dr. Edwards and 
Major Eaton, Annual. Stem very slender, dichotomously branching, purjilish. Lower leaves 
about half an inch long, abruptly narrowed at the base into a petiole which is less than half 
the lamina ; ujiper leaves 3-5 lines long. Flowsra nearly as in the larger variety. 



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148 UNITED STATES AND MEXICAN BOUNDARY. 

Kama Jamaioeksis, Linn. Sp. p. 327 ; Choisy, I. c, San Antonio, Texas ; Thurber. Sonora 
and Chihuahua; Sckott, Parry. It is No. 316 ot Drummond's 2nd Texan Collection, 

EuiODYCTiON Californicum, Bentk. Jiot. Sulpk. p. 35; Glioisy in DC. Prodr. 10, p. 185. 
Wigandia Californica, Hooli. (6 Am. Pot, Beech, p. 364, (. 88, Borders of the Lower Gila and 
on the mountains east of San Diego, California ; Major Emory. Near Monterey and in other 
parts of California; Parry. A ehruliby plant, commonly 3-5 feet high. The leaves are 
variable in hreadth and toothing: one of the narrow-leaved forms being ~R. angustifolium, 
Nult. The flowers are rather showy and of a light purplish-blue color. The plant has a strong 
terebinthine taste, and abounds in a resinous matter which sometimes exudes so copiously from the 
Btalks and leaves that in drying, the specimens stick firmly to each other and to the paper. 
The natives of California make an infusion of the leaves and use it as a tonic. 

Eriodyction tombntosum, Benth. I. c. E. crassifolium, Penth. I. c, Sandy fields around San 
Diego, June ; Parry, Thurher. This is a taller species than the preceding, growing from 6-8, 
and sometimes even 10 feet high. Like that, it is variable in the form and toothing of the 
leaves, and we have no hesitation in uniting the two species of Bentham here quoted. We 
have specimens that are fntermediate, and Dr. Parry informs me, that he has seen them in 
California passing into each other, 

EOUQUIEEIACE^. 

FooQUiEEiA SPLEHDENS, Pngelm' in Wislk. N. Mex. p. 98 ; Gray, Fl. Wright. 1, p. 85, <E 2, 
p. (58. Gravelly hills on the Eio Grande, from El Paso to the great cafion 60 miles below, 
April — May, 

CONVOLVULACE^. 

Convolvulus lobatus, Engdm. cfe Gray, PI. Lindk. p. 44, C. hastatns, Nutt. in Tram. Arner. 
Phil. Soc. (n. ser.) 5, p. 194, non Thurh. C. Nuttallii, Torr. in Emory's Pep. p. 149, Ilillsides 
and ravines ; common in western Texas and New Mexico, along the Hio Grande ; flowering 
through the season. Canon of Guadalupe, Sonora; Oapt.E. K, Smith. Near the next species. 

Convolvulus Heemannij!, Herit.; Choisy, I. c. River banks and ravines ; Presidio Falls, Rio 
Grande to Eagle Pass, March — November ; Schott, Bigelow. 

CoHVOLVULUS Calu'Obnicus, Choisy in DC. Prodr. 9, p. 405, Hillsides near Monterey, Cali- 
fornia, May ; Parry. 

QuAMOCLiT cocciNEA, Moench; Choisy, I. c. p. 335. Magdalena in Sonora, Thurier. Copper 
Mines, August, (fl & fruit); Bigeloio. {Wright, No, 1611,) The leaves in Dr. Bigelow's 
specimens are deeply 3-parted ; the lateral divisions more or less angularly lobed at the base, 

Calystegia sepium, M. Br. Prodr. p. 483 ; Choisy, I. c. p. 433. Near San Diego, California, 
May ; Thurber. 0. Maximiliana, Nees, in Maximil. Trav. seems to be only a variety of this species. 

CALYSTEorA SoLDANBLLA, B. Br. Prodr. p. 483; Choisy, I c. Seabeach, Monterey and other 
places along the coast of California, 

Batatus littoralis, Choisy in DC. Prodr. 9, p. 337. Convolvulus obtusilobus, Michx. El. 
1, p. 139, Mouth of the Eio Grande and coast of the Gulf of Mexico, May ; Scholt. 

Ipom(ea panduraia, Mey.; Choisy, I. c. p. 381. Wet places, near running water ; western 
Texas, Oct.; (fl, & fr.); Bigehtu. Leaves all entire and heart-shaped. Sepals varying from 
oblong to ovate, and from very obtuse to rather acute and mucronate. 

Ipomcea tenuiloea (n. sp.) : glabra ; caule volnbili ; foliis petiolatis pedatis lobis 5-7 fili- 
formibus integris ; pedunculis unifloris petiulo subojqualibus ; sepalis obiongo-lanceolatis acntJs, 



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BOTANY. 149 

corolla (2^ unciali) tubulosa, brevi-S-Ioba ; capsula globosa glabra. Hills and rocky places near 
Puerto de Pajsano, western Texas, September; Bigdow. (No, 1617, Wright, is a variety 
■with the segments of the leaves broader.) Stem several feet long, twining around other plants. 
Segments of the leaves 1-2 inches long, usually not more than half a line wide. Peduncle 
with 2 subulate bracteoles at the summit, thick and mostly recurved ; the pedicel about the 
length of the peduncle. Tube of the corolla trumpet- shaped, more than two inches long ; the 
limb rose color. 

Ipomcea HBTEROPHYLLA, Ortecj. Pbarbitis hcteropbylla, CJtois. in DC. Prodr. 2, p. 344. Eocky 
hills and prairies along the Eio Grande ; also on the Eio Limpio and Devil's river. (Nos, 508, 
509, a very hairy form, and 1613, Wright.) Sepals an inch long. Corolla more than three 
inches long, pale rose color. 

IpoMtKA Nil, Roth. Pbarbitis Nil, Ohois. I. c. Western Texas ; Wright, Nos. 1037 and 1612. 
Mrtgdalena, Sonora, October ; Thurber, 

Ipom(ea lonqipolia, Benth. PL Hariw. p. 16 <& 345, I. Shumardiana, Torr. in Bot. Marcy'a 
Hep. p. 291. Santa Cruz valley, Sonora, July; Thurber. "The prostrate branches are 6-10 
feet long, forming large patches which are very conspicuous in the prairies. Flowers opening 
in the morning, white with a purple throat," (Thurber,) limb nearly three inches in diameter. 
This differs from Captain Marcy's plant in the larger flowers, but not in other respects. After 
comparison with an original specimen of I. longifoliaj I think it must be united with that 
species. 

IpoMtBA Pes-Capk^, Sweet; Choisy, I. c. p. 349. I. orbicularis, Ell. Sk. 1, p. 257. Sandy 
shores, Brazos Santiago, Texas, May ; Schott. 

IpoMtBA COJLM0TAIA, Moem. & Sch. Syst. i, p. 228. I. trichocarpa, Ell. S&. l^p. 258? In 
cultivated grounds. Bancho San Chriatobel, lower Eio Grande, May ; Sclioti. Our specimens 
agree with Berlandier's No. 1931, quoted by Choisy. The species seems to be perennial. 
The capsule is smooth. 

IpoMffiA siNUATA, Orteg. ; Choisy, I. c. p. 362. I. dissecta, Pursh, non Willd. Convolvulus 
dissectus, Linn.; Mickx. Fl. \,p. 139. In shady places along the Eio Grande, from the Pre- 
sidio down to Eagle Pass ; August— November. A widely spread species. We have it Irom 
Monterey, Mexico, collected by Dr. Edwards and Dr. Gregg. It occurs also in the West Indies 
and as iar south as Brazil. 

Ipomiea lacunosa, Linn. ; Choisy, I. c. p. 378. Alluvions of the Eio Grande, September, 
October. 

lP0Ma:;A costbllata (n. sp.) : herbacea, glabriuscula, ramosa; foliis petiolatis pedatim 7-9- 
partitis, segmentis linearibus vel spathulato-linearibus integris ciliolatis ; pedunculis 1-3- 
floris petiolum paullo superantibus ; sepalis oblongis acutis exterioribus medio subcarinatis vel 
ruguloso-muricatis ; corolla (semi poUicari) tuhulosa brevilobata ; capsula glabra. On the Eio 
Grande, from the mouth of Pecos to El Paso, and near the Copper Mines of New Mexico ; July- 
October. (Nos. 505 and 1615, Wright.) Annual. Stems, 1-5 feet long, prostrate or climbing, 
slender. Leaves 1-1^ inch long, divided nearly to the base into 7-9 mostly very narrow lobes ; 
petiole about as long as the limb. Pedicels thickened. Calyx glabrous, the exterior sepals 
more or less conspicuously carinate or even winged ; the keel rugose-undulate, or sometimes 
muricul ite. Corolla scarcely half an inch long, pink, the border with 5 short lobes. Style 
undivided ; stigma capitate, two-lobed, and granulate. Capsule sub-globoae, two-celled, the 
cells two-seeded. Seed hairy. This species is allied to I. Coptica. 



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150 UNITED STATES AXD MEXICAN EOUNDAliY. 

Ipom<ea MOMCATd (Oav, Ic. 5, p. 52, t. 478, /. 2, ex Ciioisy, I. c. p. 353) : glatra ; railioe 
tuberosa globoea; eaule prostrate; foliis aubaessilibus palmiitis, lobis 5-7 integris anguste 
lifiearibus vel lobo medio lineari-lanceolato ; peduneulis unifloris brevibus (2-4 lio.); sepalis 
lanceolatis obtuaiusculis, dorso muriculato ; corolla tubulosa (unciali purpureo-coccinea) breviter 
5-loba; capsula glabra, Soaora, Mexico; Tlmrher, September. (No. 1616, Wright.) Boot 
a roundish tuber from half an inch to an inch or more in diameter. Stem a span long, slender. 
Leaves about an inch long, mo8t of the segments scarcely half a line wide. Corolla almost 
tr u m p et-shape d . 

Ipojkea lbpxotoma (n. ap.) : annua ; eaule proefcrato (vix volubili) glabro ; foliis petiolatis 
pedatis glabriusculis, lobis 5-7 linearibus oiliolatis integris, lobo medio elongato ; peduneulis 
l-2-£loris petiolo multo loagioribus ; pedicellis calycibueque hispidulis ; sepalis lanceolatis, apice 
attenuatis acutissimis ; corolla campanulato-infundibuliformi (1^ unciali.) Near Santa Cruz 
valley, Sonora, September ; Tkurher. (No. 1614, WrigM.) Stem branching from the root ; 
the branches 1-1^ foot long, somewhat twining. Petioles 2-4 lines long. Leaves deeply, 
divided in a pedate manner, the lobes scarcely a line wide, the middle lobe usually almost twice 
the length of the lateral ones ; uppermost leaves often entire. Peduncle 1-2 inches long ; the 
pedicels scarcely half an inch. Sepals about 4 lines long. Corolla with a bright reddish 
purple limb and a pale tube. 

Ipomcea fastiouta, Sweet ?; Ohotsy, I. c. p. 380? On the banks and in the bed of the San 
Pedro, Western Texas ; September, (fl. & fr.) ; Bigdow. Seems to differ in the sepals being 
only mucronate and scarcely aristate. 

EvOLVULUS Ai^iBOlDES, Lmn. Sp. 392 ; GTwisy, I. c. p. 447. Rocky hills, near Camp Bache, 
July; Bigelmu. Corallitas, Chihuahua, Aug.; and Sonora, Mexico; Tlmrber. No. 1619, 
Wright, is a form with narrow leaves. 

Var. HiRTicAULis : eaule hirsuto, pilis longis patentibus ; foliis ovato-oblongis, obtusiusculis. 
Brazos, San Jago, Texas, and on the Rio Grande near the San Pedro river. May— September ; 
Schott. Western Texas, Wright. Monterey, Mexko ; Dr. Edwards, 

Var, ANGUSTiEOLiA : eaule hirsnto, pilis sparsis longis patentibus ; foliis Hneari-lanceolatis, 
acutis. Near the Great Caiion of the Eio Grande, August ; Farry. 

EvoLVULUs? oVALiEOLius (n. sp,) : undique velutino-sericeis ; eaule prostrate e basi ramo- 
sissimo ; foliis ovatis (poUicaribus 6-8 lin. latis) obtuaiusculis crassiusculis, basi rotundatis vel 
subcordatis ; floribus solitariis axillaribus brevissime pedicellatis ; eepalis late ovatis mucronatis ; 
capeulis monospermis. On the Rio Grande, below San Carlos, October ; Farry. The specimens 
are in fruit only. 

EvoLVULUS HOLOSBBiOEUS ^ OETUSAXDS, Ghois. I. c. E. sericeus, Nutt. Gen. 1, p. 174, nOn Stoarlz. 
E. discolor, Benth. Fl. Hartw.p. 6. Rio Grande, near the San Pedro river, and near Yorkfcown, 
October ■ Schoit. A more densely cespitose form, with shorter branches, occurs near the Copper 
Mines, June; Bigdow. Monterey, Neuvo Leon; Dr. Edwards. Cerralbo ; Gregg. The 
pubesrenoe, as in the next species, is reddish, at least in dried specimens ; the peduncles are only 
one-flowered ; the sepals are scarcely two Unes long, and the leaves are often more than an inch 
in length. It may prove to be a distinct species. The peduncles of the early flowers are some- 
times nearly as long as the leaves, 

EvOLVULUS AEGBNTBUS, Fursh, Fl. 1 , p. 187 ; Choisy, I. c. E. pilosus, Nutt. Gen. 1, p. 174, * 
in Trms. Amer. Phil. Soc. n. ser. 5, p. 195, non Lamarch. E. Nuttallianus, li. & SohuU. 
Gravelly hills, near Rock Creek and Van Home's Wells, June-July ; Bigelow, Wright. 
Coppei Mine^, N. Mexico ; Thurler. Chihuahua ; Gregg. It is Ko. 668 of b^endler's N. Mexico 



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BOTANY. 151 

Ooll. A common species on the upper Arkansaa. The specific name of Pursh is inappropriate, 
for the hairyness is rusty-colored, and not silvery. Perhaps E. holocericeua is not distinct. 

DiCHONDEA REPENS, FoTst. Gen. p. 39, t. 20 ; Clioisy, I. c.p. 451. Var. Caeolinensis, Ghoisy, I. c. 
D, Oarolineiiaia, Michx. Fl. 1, p. 36. Eock Creek and Copper Mines, May — July ; Bigdow. 
Santa Orua Mountains, Sonora; Thurher. The leaves are commonly larger than in the plant 
of the southeastern States. 

DiCHONDEA ARSENTEA, WUld. Euum. Eort. Ber. p. 297; Choisy, I. c. Rocky hills on the Kio 
Grande, helow EI Paso, June — August; Parry, Bigelow. Chihuahua; Thurber. {Wright, 
No. 1621.) 

Ckessa Oeetioa, Linn. Var. Truxillbnsis, Ghmsy, I. c. p. 440. C. Truxillensis, H. B. K. 
Nov. Gen, db Sp. 3, p. 119. Low and sandy places, Laguna de Lache, Solado, Mexico, April ; 
Bigelow. On the Gila, Sonora,_ June ; Thurber. (No. 1618, Wright.) Saline soils, San Diego, 
California ; Parry. Bolson de Mapini, Mexico ; Gregg. Differs from our European specimens 
of 0. Cretica, in being more upright, with considerably larger leaves and flowers, and in the 
linear-ohlong (not roundish-ovate) anthers. The fruit, too, is mostly one-seeded. Still we 
follow Choisy, in regarding it as hut a variety C. Cretica. 

CuscuTA. Dr. Engelmann, of St. Louis, has long been occupied in preparing a monograph 
of this genus, which will be published on his return from Europe. Although I have his 
determinations of a large proportion of the species collected in the Mexican Boundary Surwy, 
I think it better to wait until his monograph appears, and thus to have the advantages of his 
latest researches, rather than publish my own observations on this difficult genus. 

SOLANACEAE. 

SoLANUM Jamesii, Torr. in Ann. Lye. N. York, 2, p. 22T. Gray, in Sill. Jour. n. ser. 22, p. 284 "; 
On the upper Rio Grande; west to the Copper Mines of New Mexico and the Zuni 
Mountains. Rocky places, Puerto de Paysano, Tuber about the size of a marble. The 
specimens collected by Dr. James, in Long's Expedition, were imperfect and erroneously described 
as annuaL 

Solanum Fejsdlbei, Gray, I. c. Near the Copper Mines, New Mexico; Bigelow. Near S. 
tuberosum, but differs in the segments of the leaves being nearly uniform in size ; usually the 
lowest pair only being very small. The tubers, in the wild plant, are seldom more than half 
an inch in diameter, 

Solanum trifloeum, mut. Gen. l,p. 128. On the upper Rio Grande. (No. 675 Fendl. PI, 
N. Mex.) This is more common on the tributaries of the Red, Arkansas, and Missouri rivers. 

Solanum NODiFLOEUM, </acg. /c. liar. 2,t. 326, ex Bunal in DC. Prodr. l^, pars I, p. 46. 
Western Texas and on the Eio Grande from the mouth of the Limpio downward, June— July. 
(No. 524, 892 and 1904, Berlandier.) Perhaps only a variety of S. nigrum ; and 8. crenato- 
dentatum, Dunal, I. c. (at least the plant of Berlandier) is probably only another form of the 
same species. 

SoLANL-31 DouGLASii, Dwial, I. c. Moist places, San Luis Rey, California ; Parry. Plant 8-10 
feet high ; flowers bright blue. Dr. Parry says that the stem is somewhat woody at the base 
and that the berries are eaten by children ; but it has very much the appearance of the last 



Solanum umbbllifbeum, Esoh. in Mem. St. Petersh. 10, p. 280 ; Torr. in Whipp. Mep. p. 127. 
8, Californicum, Bunal, I. c, p. 86. S. genistoides, Dtmal, I. c. p. 85. S. Menziesii, Dunal 
I. c.p. 159. In California; Parry. In most parts of California; but more common near the 



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152 UNITED STATES AND MEXICAN B0UND4HV. 

Bea. It is extremely variable ia the form and size of the leaves, as well as in the degree of 
pubescence. Being a hardy, suffruticose species, and bearing a profusion of handsome blue 
flowers throughout the season, it deserves a place in our gardens. 

SoLANUM LiNDHEiMEKiANOM, Sckeele in Lmncea, 21. p. 766. 8. tric[uetrum, B. Dunal, I.e. p. 154. 
Sandy and shady places, central and western Texas, and along the Rio Grande, from the 
mouth of the Pecos, downward ; flowering throughout the season. (No, 1591 and No, 536, the 
latter a narrow-leaved form, Wright; No, 481, Lindhelmer ; No. 154 and lil&, Serlandier.) 
Variable in the size and breadth of the leaves, as well as in the length of the auricles. This 
ia, perhaps, too near S. triq^uetrum. Dr. Engelraann formerly distributed the plant under the 
manuscript name of S, dulcamaroides, but he published no description of it. 

SoLANUM EL^AGNiFOLiTJM, Cav. Jc. t. 243; Duual, I. e. jj. 290, S. flavidum, Torr. in Ann. Lye. 
N. York, 2, p. 227, S. Texens^, Engelm. & Gray, PI. Lindh. 1, p. 19. 8, Roemerianum, 
Scheele in Linncea. 21, p. 76T. S. Hindsianum, Benih. Bot. Sulph. p. 39? Texas and New 
Mexico, especially along the Rio Grande and westward to California, {No, 1590, Wright. 
No. 659, 665 and 2069, Berlandier.) S, Texense differs only in being destitute of prickles ; 
but intermediate forms are common. Dr. Gregg, who found this plant in all the Mexican 
States that he visited, remarks, in his notes, that the natives, who call the plant PrompiUo, use 
the fruit for curdling milk, and likewise as a sudorific and sternutatory, 

SoLANOM ROSTKATTJM, Bunal, Solan. p. 234, (£ in DG. Prodr. I. c. S, heterandrum, Purah, Fl. 
2 p. 731, t. T, S. Bejariense, Moricand; Bunal, I. c. Androcera lobata, Nutt. Gen. 1, p. 129. 
Nycterium lobatum, Sweet. N. luteum, Bonn; Torr. I, c. Common in Texas and New Mexico, 
extending westward through the neighboring Mexican States. Perhaps not distinct from S. 
cornutum. 

SoLANCM ciXRULUJfOLiDM, A. Braun in Ind. 8em. H. Frih. 1849, flde A. DG. Prodr. 13, para 1, 
p. 682. S, heterodoxum, Jacq. Eel. PI. Bar. 2, t. 103. Plains near Puerto de Paysano and 
near the Limpio ; July — September ; Bigdow. Flowers large, violet, an inch in diameter. The 
last three species belong to a remarkable group (Cryptocarpum, Dunal,) which Nuttall regarded 
as a proper genus, (Androcera,) It is chiefly distinguished by the fruit being completely 
inclosed in enlarged tube of the calyx. 

SoLANUM HETBaoDOXUM, Duual, I. c, p. 331 ? On the Kio Grande, below Preside del Norte ; 
August' Parry. Corallitas, Chihuahua; Thurher. Differs from the last in the excessively 
hispid stem and branches, and in the mueh smaller flowers, 

SoLANUM VKRBASciFOLioM, Linn. Sp. p. 263; Dunal, I. o. p. 114, Near Monterey, Neuvo 
Leon ■ Br Edwards, Br. Gregg. Between Victoria and Tamaulipas ; Berlandier, No. 806. A 
tall suffruticose species ; common in the warmer parts of America and Asia. Dr. Gregg says 
that the Mexicans call it Yeria de San Pedro, and that they use the plant made into a poultice 
as an application to ulcers and boils. 

Capsicum microphyllum, Dunal, I. c. p. 421. Western Mexico, Chihuahua, Neuvo Leon, etc. ; 
common. It is used, like other red peppers, by the Mexicans, who call it Ghipaiane. The Si>e- 
cific name is not appropriate. 

Physalis lobata, Torr. in Ann. Lye. N. York, 2, p. 226, Solanum luteiflorura, Dunal, I. c. 

64 Borders of the Rio Grande, from New Mexico to Eagle Pass, March — October, (No, 

1595 Wriqht.) Dr. James collected this plant only in the early state, without fruit, except a 

single fructiferous calyx. We have, however, from the valley of the Rio Grande, numerous 

auecimens of what is clearly the same species in a mature state, and which is the same as No. 



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UOTASY. 153 

1604 of Wright's Collection. The etera ia 12-18 inches long, prostrate, and much branched. 
The leaves vary from coarsely sinuate-toothed to nearly entire. Mowers solitary, on pedicels 
■which are much longer than the petioles. Corolla campanulate-rotate, purple, half an inch or 
more in diameter. Fructiferous calyx nearly as broad as long and much larger than the berry. 
Seeds irregular in outline, less compressed, and thicker on the edge than is usual in this genus; 
the testa cellular and spongy. 

Phy.'alis ptjmila, Nutt. in Trans. Amer. Phil. Soc. (n. ser.) 5, p. 193 ; Var. ? Sonohjb : glabra, 
foliis lanceolatis integris. Fronteras, Sonora ; June, Thurher. About a foot high, apparently 
erect, branching towards the summit Leaves solitary, 2-3 inches long, and 5-7 lines wide 
attenuated at the base into a petiole. Flowers solitary, on pedicels which are shortei- than the 
petioles. Segments of the calyx as long as the tube, triangular-lanceolate, aoate. Corolla cam- 
panulate, yellowish, immaculate. 

Physalislahceolata; ilichx.Yar.? spathulsfoija : prostrata dichatomeramosaminiitepuhes- 
cens; foliis spathulatis vel ohlongo-spathulatis obtusis basi attenuatis solitariis vel geminis ; 
pedunculis solitariis petiolo suWongioribus erectis ; calycibus campanulatis dentibus tnbo dupJo 
brepioribus ; corolla rotato-campanulata purpureo-maculata. On the sea beach near the mouth of 
the Eio Grande, May ; Schoit. We have a viscidly stellate-pubescent form, collected by Drum- 
mond in southern Texas, probably on the shore of the G-nlf. 

Phybalis lohqipoua, Nutt. I. c. f; Dunal, I. c. Alluvions of the Uio Grande, 35 miles below 
San Elceario, and near the Copper Mines, June — July ; Bigelow. Lower Eio Grande ; Scliott. We 
have also specimens collected by Lieut. Abert, on the upper Canadian, in 1846. Our plant 
differs from the descriptions given by Nuftall and Dunal in scarcely any respect except the nai- 
rower leaves. We have, however, only the upper part of the plant, on which the leaves 
(including the petiole) are rather oblong-lanceolate than ovate-lanceolate. Some of them are 
about 4 inches long. The root, according to Nuttail, is perennial. 

Physalis Alkekengi ^ maiTAUFOLiA, Dwial, I. c. p. 438. Along the Kio Mimhres, New 
Mexico, May ; Thurber. Near the Copper Mines ; Bkjdoic. Sierra del Pajarito, Sonora ; 
Schott. Probably, as Dunal suspects, a distinct species. 

Physalis molus, Nutt. I. c. Western Texas, and near the Copper Mines ; Thurber. Nos. 
1599 and 1600, Wright, seem to be only forms of this species ; and 1597 a smoother form of 
the same. We have also specimens collected near Monterey. Flowers dull yellow, with dark 
purple spots at the base. It is near the preceding species. 

Physalis cardiomylla {n. sp ): perennis ; eaule petiolisque minute puberulis ; foliis plerumque 
solitariis late cordatis grosse siiiuato-dentatis longe petiolatis glahriusculis utrinque viridihns ; 
pedicellis petiolo longioribus ; calyce campannlato, deatibus tubo dimidio brevioribus ; corolla 
(lutea) infundibuliformi-rotata immaculata. Sonora, and California, desert of the Colorado ■ 
flowers throughout the season ; Schott. Stem 12-18 inches long, branching from the root^ 
ascending or prostrate. Leaves J-l| inch long, and nearly as broad as long, slightly succu- 
lent, sometimes nearly entire ; the petiole about as long as the lamina. Pedicels mostly longer 
than the petioles. Calyx 2 lines long, the teeth triangular and acute. Corolla half an inch in 
diameter. Anthers equal, yellow. Fructiferous calyx ovate, an inch and a quarter long. Fruit 
the size of a small cherry. Seeds orhicular-reniform, much compressed, with a nearly eveti 
testa. 

20 k 



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154 UNITED STATES AND MEXICAN BOUNDARY. 

Several other species of this diffieiilfc genus are in tlie Mexican Boundary Collection, but they 
cannot at present to determined satisfactorily, either from the imperfection of the specimens, or 
for want of the means of comparison, 

Mabgaeanxhus soi,anaceus, Scklecht. Ind. Sem. Sort. Hal. 1838, p. 8, t6 Hori. Hal. p. 1, t. 
1 ; Dunal, I. c. p. 453. Santa Eita del Cohra, New Mexico, July — August ; Bigdoio. (No. 
1603, Wright.) No. 1220 of Coulter's Mexican Collection. Our New Mexican specimens and those 
of Mr. Wright are considerably smaller than the plant represented by Schlechtendal, but his 
figure was taken from a cultivated specimen Coulter's plant agrees exactly with the figure. 

LxciUM PALLIDUM, Miers, III. S. Amer. PI. 2, p. 108, t. 67, C. Gravelly hills near the Eio 
Cibolo of the Rio Grande ; also in Chihuahua and near the Copper Mines, New Mexico, April — 
July ; Bigelmo. (No. 760, Fcndler.) It was also found by Fremont in 1844, on the Eio Virgen, a 
branch of the Colorado, western New Mexico. A shrub 3-4 feet high. Flowers greenish, larger 
than in any other North American species oi this genus. It is remarkable for the loose cam- 
panulate calyx, the broad obtuse divisions of which are longer than the tube. 

Lycium gTOLiDUM, Mievs, I c. p. 126, t. 71, C. On the Rio Grande, from the Presidio down 
to Laredo, May ; Sdiott. (Nos. 540 and 1610, Wright.) 

Ltcium bakbinode, Miera, I. c. p. 115, t. 68, E. On the upper Eio Grande and westward to 
the Eio Grande, March— April. A shrub about 5 feet high. 

Ltcium Beklandieri, Dunal in DO. Prcdr. 13, pars 1, p. 521. Borders of the Eio Grande, 
from El Paso to Eagle Pass, March — April. Nos. 1604 and 1608, Wright, seem to be hardly 
distinct. A branching shrub 2-6 feet high. Flowers pale purple. 

Datura meteloides, DO, MSS. ; Dunal, I. c. p. 544. Western Texas, Chihuahua, Sonora, 
and other Blexican States ; common,* (No. 1C06, Wright.) 

• " Tliisfino Dafura, which has all the appearance of being indigenous in New Mexico and the adjacent provinces of Mcsico, 
mUBt be tlie D meteloides named by De CaiidoUe, and described by Dunal in tho Prodromus frjm one of the drawh^gs by 
Mocinu and Sessa. But the dialinctions between it and D. Metel are not well stated ; nor did Djnal himself IdenUfy the specie 
ill the epecimens from Berlandior's collection, Ho, 9156, gathered at Victoria, Tamaulipoe, but referred them to D. Metel, 
and, in consequence, Alphonse De Candolle, in the Geo^p-a-phie Botaiiiqv,c, S, p. 735, allows them to have considerable weight in 
favor of the American origin of D Metel. The only reason for doubting our New Me* loan plant to be Da CandoUe'sD. mete- 
loides is, that Dunal described it as having a ' corolla I(l-dentata,' which our plant has not. But the slight folds answering to 
the sinuses may have been exaggerated and misunderstood. From seeds gathered by IMr. Wright this species has been culti- 
vated in the Cambridge Botanic Garden for several years, for the past two yeara by tho side oi Datura Metel. The leading 
diagnostic characters of the two may be expressed, as follows : 

" D- Metel, Lmn : viscid ul O' p u beseens ; taule subvilloso ; corollte tubo ultra calycem scnsim modico dilatato, limbo 10- 
dentata ; basi calyeis pcrsistanto Buboapsula ampla. 

" D. METELoinEB, DC.; pruinoso-glaucascens, vix puberola ; flore suaveolente ; corolla supra calycem cylindricum valde 
dilatata, limbo eximie 5-dentato ; basi calyeis subcapsula persistente angusta -, foliis integerrimis, 

" D. meteloides, although with us a lower plant than D. Metel, is more showy ; its corollas (tinged with bluish purp'u) arc 
niore dilated-funnelform and larger, measuring 5 or 6 inch^ in diameter of the limb, and oHen 6 inches In length ; and what 
may bo called the limb is on each side equal in length to the part of the tube which projects beyond the calys. In D. Metel 
the throat is much narrower, and the limb proportionally smaller, say 4 or H inches in diameter. In D. meteloides there are 
no teeth or projections whatever at the sinuaea of the corolla, nor does tho slight plaiting there give the appearance of teeth ; but 
tlie five proper teeth are very salient, narrowly subulate, and half an inch in length. The capsule is nearly glabrous, and with 
shorter prickles than the cultivated D. Metd, but otherwise similar, as are the seeds ; the persistent and reHexed base of the 
calyx, however, is much smaller. The herbage has somewhat of tho disagreeable odor of D. Metel, but the flowers are sweet- 
scented." Ji. Gray. 



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BOTASY. 155 

Datura Thomasii, T'^rr. Bot. Pacific It. Road Rep. 5, p 302. Borders of the Colorado, near 
Fort Yuma ; SckoU. Mr. Tiiurber collected at Corallitas in Ohihiiahua, a Datura resembling 
this species, but with the capsule armed with only a few (about 20) very long and rigid slightly 
pubescent prickles. Both may be extreme forms of D. Stramonium. 

NicOTiANA PANDUBATA, Bunol, I. c. p. 569. Alluvions of the lower Eio Grande, Western 
Texas, and in the Mexican States on the west. Not very distinct from N. Eoemeriana, Soheele. 
No. 630 and 3000 Berlandier's Coll. (from Mataraoras) we think should be referred here. 

PETUiaA PARViFLORA, Jvss. Anil. M'us. 2, p. 216, t. 47 ; Miers III. t. 23, Dimal in. DC Prodr. 
13, pars 1, p. 5T5, Leptophragma prostrata, Benth. in Du,nal, I. c. p. 578. Salpiglossis 
prostrata, Hook, (fc Am. Bot. Beech, p. 153. Borders of the Rio Grande, lower Eio Grande 
and in the Mexican States westward to California. (No. 539 and 1587, Wright. No. 215 and 
1475, Berlandier.) 

NiEitBMBEBGiA (Leptoglossis) viecosa (n. 8p, ): viscoso-pubeacene ; foliis elliptis-oblongts acutiiis- 
eulis basi angustati,?, inferioribus longiuscule petiolatis; iioribua subaxiliaribus ; pedicellis 
calyce infuodibuliformi-campanulata subaq^ualibus ; calycis laciniis oblongis acutis tubo dimidij 
brevioribus ; tubo corollis elongato gracili apice gibboso. — Rocky hills, mouth of the Pecos, anl 
on Devil's river, western Texas ; Bigelow. (No. 535, Wngkt.) Boot often annual, but aorae- 
times, apparently, perennial. Stem fi-10 inches high, usually branching from the root. 
Leaves 8-10 lines long and 2-4 lines wide. Pedicels often extra-axillary, shorter than the 
leaves. Calyx funnel for m-campanulate, about four lines long. Corolla nearly an inch !ong, 
the very slender tube more than twice the length of the calyx, saccate and somewhat gibbous at 
the throat ; limb purple, more than half an inch in diameter, rather unec[ually 5-lobed, the 
lobes roundish and entire. Stamens inserted in the succate throat of the corolla and iqcluded, 
two of them with short curved filaments and large roundish 2-eelled anthers, 2 others v/iih 
straight filaments and much smaller l-celled anthers, the 5 stamen a mere abortive fllamenL 
Ovary ovate acute ; style elongated and filiform; stigma dilated and somewhat petaloid, 2-iol)ed 
at the base, truncate and 2-lipped at the summit. Capsule much smaller than the fructireroiis 
calyx, roundish ovate. Seeds oblong, a little curved, strongly corrugated transvers-ely and 
somewhat spirally. Embryo moderately curved. 

WiTHANiA ? SORDIDA, Dunol, I. c,, p. 456, Western Texas from New Mexico to the lower 
Eio Grande ; near Monterey, Neuvo Leon ; Dr. Edwards. Balson de Mapini ; Gregg. (Nos. 
531, 532, 533, 1596, and 1593, the last a broad leaved form, Wrigld. No. 676, Fendler, N. 
Mex.) Perennial ; villous pubescent, the pubescence partly glandular. Leaves 1—1^ inch 
long. Pedicels 6-10 lines long. Calyx broadly campanulate, villous ; corroUa 6 lines in 
diameter, dull yellow. Fruit the size' of a large pea. 

WiTHANiA? CoKONopus. Solauum Coronopus, Dun. inDO Prodr. 13, pars 1 p. 64. Along the Eio 
Grande and its tributaries, from El Paso to Laredo, April — July. (Nos. 534, 1593, and 1594, 
Wright. Nos. 74 and 480, Coll. 184G, and 484, Coll, 1847-8, Lindheim. No. 675, Fendl., N. 
Mex. NoH. 666 and 3023, Berlandier. No. 1252, Coult. Mex.) Eoot annual? Plant roughish 
with minute short and thick hairs, which are bifurcate at the summit. Leaves lanceolate, 1-lJ 
inch long, more or less deeply pinnatifld or merely toothed, the upper part often linear and 
entire. Flowers solitary, on slender pedicels which are at length reflexed. Corolla dull yeliow, 
about 6 lines in diameter. Fruit globose, the size of a large pea, nearly white when mature, 
about two-thirds covered with the calyx. This plant is certiiinly a congener of the last, which 
we have followed Dunal in referring doubtlully to Withania. The calyx increases with the fruit, 



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156 UNITED STATES AND MEXICAN BOUNDARY, 

but never encloses it, nor does It become inllated. The corolla ia much more rotate than cara- 
pamilate. 

NiEREMBEROiA ANOMALA, MisTsin Book. Lmd. Jour. Hot. 5, p. 175, & III. 1, t. 20; Dunal, I. c. 
p- 588, Leueanthea Eoemeriana, Scheele in Linntoa 2o,p. 250. Bouchetia erecta, DG. MSS.; 
Duncil, I. 0. Western Texas ; Wright. Near Monterey, Neuvo Leon ; I>r. Edwards. (No. 345 
Coll. Ill, Texas, Drummond.) This corresponds exactly with the figure of Miers, who states 
that the Texan plant differs in no respect from the South American N. anomala. Ktamens some- 
times only 4 and subdidynamous, or when 5 one of them smaller. Seeds roundish, reticulate. 

Bbowallia (Leptoglossis) Tbxana (n. sp.): annua, vicoso-pubescens ; canle e basi raraoso 
erecto; foliis altemis integervimis basi in petiolnm attenuatis; floribusextra-axillaribus ad apices 
ramorum laxe subcymosis ; pedicellis calyce campanulato-tubuloso subinflato subiequaiihus ; cor- 
ollte tnbo gracili apice enbgibboso calyce triplo longiore, limbi laciniis orbicularis subrequalibua. 
Near the mouth of the Pecos, September — October ; Bigelow, Pope. (No. 535, Wright.) Plant 
a span high, dull green; leaves about three-fourths of an inch long, rather acute. Pedicels 3-5 
lines long. Calyx 5-cieft ; the lobes ovate and acute. Corolla salver-form ; the tube very slen- 
der, 8 lines long, gibbous at the summit ; limb flat and somewhat oblique, 6 lines in diameter, 
purple. Stamens inserted in the throat of the corolla, didynamoua. Capsule globose-ovate, 
scarcely one-third the length ofthe fructiferous calyx ; the valves at length bifid at the summit. 
Seeds irregularly oblong, strongly rugous transversely. Embryo a little curved. This plant 
clearly belongs to Leptoglossis of Beutham, and is nearly related to L. Schwenkioides. We 
think the genus should be united to Browallia. We are also disposed to adopt the views of those 
botanists who would remove the tribe Salpiglossidesa from Scrophulariacese to Solanacese ; but 
we are not prepared to go so far as to unite these plants and certain tribes ofthe latter family 
into an intermediate order. The limits of these orders can not yet be fixed with any degree of 
precision, 

GENTIANACEiR. 

Fraseha si'ECiosA, Bou(/l MSS.; Hook. Fl. Bor.-Amer. 2, p. 66, (. 153. Copper Mines, New 
Mexico, and near the Eio Mimbres, June ; Bigeloio. Capsules slightly compressed, contrary to 
the valves ; 40--50-seeded. 

Frasera Pakrti {Torr. in PI, IVkippl. p. 126) : caule erecto tereti glabro ; foliis caulinis 
oppositis ternisve lanceolatis undulatis, floralibus (bracteis) ovatis pedicellis multo breviorihus ; 
sepalis ovatis albo-marginatis ; petalis ovato-lanceolatis sepala subsBquantibns, fovea lunata soli- 
taria, corona obsoleta. Mountains east of San Diego, California, on the eastern slope, June ; 
Parry. No. 558, California, Co^dter. Stem 2-3 feet high. Radical leaves clustered, the upper 
cauline ones mostly ternate, the whorls remote. Flowers numerous, in a terminal panicle nearly 
an inch in diameter. Petals greenish white, speckled with purplish linear dots ; the pit or gland 
lunate, with the horns pointing upward, fringed with hairs around the margin. Corona a mere 
narrow, slightly ciliate border. Fruit not known. Nearly allied to F. Carolinensis, but that 
species has the leaves in 4s and 5s, a leafy panicle, linear lanceolate sepals, and roundish-oval 
entire glands. 

Ebytiir.4;a CHIR0NIOIDE3. Gyrandra chironioides, Griseb. in DC. Prodr. 2, p. 44, (Tab. XLII.) 
On the Eio Grande, from Dona Ana southward to San Elceario, and westward to the valley of the 
Gila. (No, 3191, Berlandier ) Our plant has usually broader leaves than those of Berlandier's 
specimens. Var. j3: floribus lateralibua breviter pedicellatis ; corollas laciniis obtusis. E. Muh. 
lenbergii, Griseb. I. c, (quoad pi. Calif.) Dry soils around San Diego and in many other parts 



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BOTANY. ] 57 

of California. It tegine to flower when scarcely an inch high, hut at length, in gooJ soil, attains 
the height of a foot or more. The flowers vary greatly in size, from less than an inch to an inch 
in diameter. They are of a bright rose color with a yellow centre. We refer here E, Muhlen- 
hergii, Benlh. PI. Eartiv. , apparently a mere dwarf, small-flowered state of the plant, which we 
have from several collectors. This species is known in California by the name of CancMlagua, 
a bitter tonic of considerable reputation ; but E. tricantha is often confounded with it, and 
posResses similar virtues. The same name has long been applied to E. Chilensis. Gyrandra 
speciosa, Benth. Bot. Sulph. p. 127, (. 45, differs from this species chiefly in the shorter filaments, 
and in being more spreading. I have noticed at least in one species that the filaments increase 
in length after flowering, as do the tube of the corolla and the style. In authentic specimens of 
Berlandier, (whose plant is certainly annual, not as stated by Grisebaeh, perennial,) the stem is 
4-angled, as in all the species of Erythrsa. The genus Gyrandra seems to have no characters 
by which it can he distinguished from Erytbrtea. The segments of the calyx are somewhat cari- 
nate, but not winged as in some genuine Erythrfsa. The corolla is of the same form in both 
genera. The anthers of E. Centaurium, as well as of other species that I have examined, are 
as destitute of a connective as are those of Gyrandra. 

EfiyrHEiEA Tbxensis, Oriseh. Gent. p. 139, din T)G. Prodr. I. c, p. 58. Eocky places on 
the Pecos ; Bigelow ; and along the Eio Grande ; Scliott. April — September. 

Ebythbjea Beyrichii, Torr. & Gray, Fl. 2, p. — , (ined.;) Torr. in Bot. Marcy'a Mep. p. 291, 
t. 13. E. tricantha, j5 angustifolia, Griseb. in BO. I. c. 60. Rocky tanks of the Pecos and 
San Pedro ; Bigelow, etc. Sabina creek, Texas ; Thurber, (No. 1663, Wright.) 

Erytue^a xRicANiHA, Griseh. Gent. p. 146, and in DC. Prodr. 9, p. 60; Benth. PI. Harho. p. 
322. In various parts of California, especially near the coast. We have from Sir William 
Hooker specimens of this plant, collected by Douglas, which agree in all respects with ours. 
The lobes of the corolla are not "linear and very acute," but lanceolate and rather obtuse. 
Grisebaeh probably drew his description from specimens which were dried without pressure, so 
that the lobes of the corolla had become involute and apparently very narrow as well as acute. 
After a careful comparison of original specimens of E. tricantha and E. floribunda, (the California 
plant oi Benth. PI. Hartweg,) I have little doubt that they are forms of one species. E. flori- 
bunda differs only in the broader lobes of the corolla. 

Gbstiana detonsa. Fries. Griseh. in DC. Prodr. 9, p. 101 ; Torr. Fl. N. York, 2, p. 108, (. 82. 
Babacomori to 8anta Cruz, in wet places, September ; Thurber. {No. 1658, Wright.) 

Gentiana AFPiNis, Griseb. in Booh. Fl. Bor.-Amer. 2, p. 57. Hills and rocky places near 
the Copper Mines, August — October ; Bigelow. (No. 1657, Wright.) 

Gbhtiaka quinqueflora. Lam. Diet. 2, p. 643; Griseb. I. c. Western Texas. No. 1659, 
Wright. 

ExiSTOMA Eusseliahum, G. Don. Gen. Syst. Gard. 4, p. 175; Griseb. in DO. Prodr. 9, p. 51. 
Valley of the Eio Grande, etc., in sandy soils ; common, May — October; Thurber. On the 
Gila, Sonora ; Thurber. (No. 1660, Wright.) Leaves varying from oblong and obtuse to 
narrowly lanceolate and acute. The flowers also vary greatly in size and in the proportionate 
length of the segments and tube of the corolla Perhaps not distinct from E. exaltatum. 

Sabbatia campestris, Nutt. in Trans, Amer. Phil. Soo. (n. ser.) 5, p. 197. Prairies on the 
Guadalupe river, Texas, May — June ; Wright. (No. 2568, Berlandier.) 



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EcniTES MACROSTPiiON (n. Rp.): canle erecto suffrutieoso ; ramis tomentosis ; foliis ovatis acutia 
vel acutiuscuHs breviKeime petiolatia baai obtuais vel subcordatis supra pnbescentibus subtos 
albo-tomentosis ; pedunculo terminali iini-(raro bi-) floro petiolo subduplo longiore ; lobis 
calycinis lineari-lanceolatia ; coroIlEe puberulte tiibo calyce 6-8-ie8 longiore versus apicein 
ventricoso, lobis obovatis, (Tab, XLIII.) Rills and dry rocky places along the Bio Grande, in 
Texas and Chihuahua, August — September. (Nos. 556, 557, and 1664, Wright) Plant 1-3 
feet high, often a little branching at the sumruit. Leaves |-1^ inch long, and |-1 inch wide, 
often obtuse, but usually with a short abrupt point, the petioles s:;arcely more than a line in length. 
Flowers of a spicy odor. Calyx with numerous (30-40) minute subulate glands on the inside 
surrounding the base of the corolla. Corolla white, tinged with rose externally; the tube 3-5 
inches long, the upper part, for about an inch, 3 times the diameter of the lower portion, not 
constricted at the throat, pubescent inside below the insertion of the stamens. Nectary of 5 
unequal obtuse compressed distinct glands, which are ab^ut half the length of the ovary. 
Follicles about 3 inches long, very slender and tapering to a long point. Heeds oblong- 
linear ; testa wrinkled ; the coma at each end longer than the body of the seed. Very mucli 
resembles E. hypoleuca, Benth ; but that has longer peduncles, a velvety -pubescent corolla, the 
tube of which is only twice the length of the lobes and dilated about one-half its length as well 
as constricted at the orifice ; also two of the glands of the nectary are connate. 

EcHiTES BiiACHYSlPHON (u. sp.) : caule erecto suffruiicoso, ramis puberulis ; foliis oblongis 
ovatisve acutis utrincLue pubescentibus subconcoloribus brevi-pstiolatis ; pedunculis terminalibus 
uniflorie petiolo 5-plo longioribus ; lobis calycinis oblongis ; corolla tube calyce 4-plo longiore 
supra medium suhventricoso, lobis obovatis, Arroyo de los Janos and San Bernardino, Sonora; 
ScJioU, Thurb&r. (No. 1665, Wright.) Plant from a span to a foot high, more spreading than 
the preceding. Leaves about an inch long, sometimes smaller and oblong-lanceolate, the lower 
ones often obtuse, not white on the under side. Peduncles | of an inch long. Calyx 2^ lines 
long, with about 20 minute subulate glands at the base. Corolla white ; the tube an inch and a 
quarter long, the lower half much contracted. Nectary with two of the glands united into one. 
This species also is related to E, hypoleuca, hut that differs in the under part of the leaves being 
clothed with a dense white tomentum, and the segments of the calyx are ranch narrower as well 
as longer. 

Ai'OCYNUM OANNABiNUM, Linn. 8p. p. 311; AJph. DO. Frodr. 8, p. 439. Western Texas, 
Sonora, and California. Broad and narrow leaved forms occur in all these places. 

Amsohia tombbtosa, Torr. <& Frem. in Frem. 2d Rep. p. 316. Sandy plains and ravines, 
borders of the Kio Gi-ande, Chihuahua, Sonora, &c , April— May. Stems about a foot and a 
half high, several springing from a woody base. Leaves varying in breadth from linear to 
lanceolate, clothed with a short dense and more or less hoary pubescence. Flower about as large 
as in A, Taberna;montana, Walt. Pods 2-3 inches long and 2 lines in diameter, cylindrical, 
erect. A variety, or i)erhaps distinct species, occurs at Laguna Santa Maria, Chihuahua. It 
is glabrous ; the flowers are considerably smaller, with the sepals glabrous and nearly as long 
as the tube of the corolla. In A. t^mentosa the sepals are hairy and scarcely half as long as 
the tube of the corolla. A Tahernremontana differs in t!ie very short lanceolate sepals, which 
are scarcely one-fourth the length of the tube of the curoUa. 



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BOTANY. 159 

Amsonia Tabeen,emohtana, WaU. Fl. Oar. p. 98 ; Decaisne in DO. Prodr. 8, p. 385. A 
ciliata, WaU. I. c; .Decaisne, I. c. A. latifolia, Mickx. Fl. 1, p. 121. A. anguetifolia, Mtchx. 
I. 0. A. salicifolia, Ftirsh, Fl. 1, p. 184. A. triatis, J. E. Smith in Sees' Oycl. Hills near 
the Blanco river, Texas ; Wright. A nearly glabrous variety. 

Ambokia longiplora (n. sp.) : glabra ; caule erecto e basi lignoso ramosissimo ; foliis lineari- 
lanceolatis vel linearibus ; corollre tubo gracili elongate {1| unc, longo) euperne eubventricoso ; 
sepalia lanceolato-subulatis. Rocky ravines near El Paso, April — May. (No. 1668, Wright.) 
Plant 1-2 leet high. Leaves 1^-2 inches long, and from less than a line fo 2\ lines wide. 
Corolla blue ; lobes of the limb about one-fourth the length of the tube. Pods as in the two 
preceding species. No. 1671 Wright is a variety with very narrow leaves, which are scabrous 
with short liaira on the margin. 

Haplophyton cmroiDUM, Decaisne in DG. Prodr. 8, 'p. 412 ? In crevices of rocks, Magdalena, 
Bonora; Tkurher, Schoii. (No. 1666, Wright.) Stems several from a woody base, 1-2 feet 
high, minutely pubescent. Leaves 1-1^ inch long, and 2|-4 lines wide, opposite or alternate, 
scabrous with short rigid hairs, which stand on a swollen crustaceous base. Flowers terminal 
solitary or 2-3 in a cymulo. Calyx | the length of the corolla-tube ; no traces of glands. Corolla 
suliihur- yellow, somewhat ealverform ; the tube shorter than ihe obovate lobes. Stamens united 
about middle of the tube of the corolla ; anthers oblong, rather acute, rather longer than the 
free portion of the filaments. Ovaries oblong, distinct, each 'Z-S-ovuled ; style rather stout. 
Stigma oblong-capitate, entire. Pods 2 inches long, very slender, tapering to a long narrow 
point. Seeds oblong-linear, the testa wrinkled, each extremity furnished with a coma of white 
hairs, which are longer than the body of the seed. This genus was founded on a Mexican plant ; 
and part of the character, eapeciaily what relates to the S(;ed, is drawn from an unpublished figure 
of Mocino and Sesse. Notwithstanding the seed is said to be hairy only at the upper extremity 
I strongly suspect that the coma of the lower end had become detached, as it is very deciduous. 
Our plant agrees in every respect with H. cimicidum, except that the latter is said to have leaves 
2-21 inclios long and 8-10 lines wide. 

ASCLEPIADACE^. 

Metastelma bahbioerum, SchceU in Linnaia, 21, p. 760. Hill sides and thickets, borders of 
the Rio Grande, from New Mexico to Eagle Pass, June^ — September. Near Monterey, Neuvo 
Leon, Dr. Edwards. (No. 549 and 1676, Wright. No. 2172 and 3198, Berlandier.) Dr. 
Gregg collected it in Neuvo Leon, west of Cerralbo. We have what appears to be M, Schlecht- 
eudalii, Dne, collected in Key West, Florida, by the late Mr. Blodgett. 

Metastelma? angustifolia (n, sp.): giabrata ; caule prostrato vix volubili ; ibliis anguste- 
linearibus acutis basi in petiolem brevem attenuatis ; floribus plerumque solitaiiis axillaribus 
opjiositis breve pedicellatis ; corolla laciniis lineari-lanceolatis acutissimis apice recurvis in- 
trorsum infra medium retrorsim pilosis ; coronre st^m. foliolis oblongo spathulatis erectis integris 
gynostegio constricto subiBciualibus ; stigmate longe rostrato. — Sides of rapines, Santa Cruz, 
Sooora ; Wright, No. 1677, Stem 1-3 feet long, slender, vrith a somewhat ligneous base. 
Leaves 1-1^ inch long and one line wide. Flowers purplish, 2 lines long, on pedicels of the 
same length. Calyx deeply 5-parted, the segments narrowly Lanceolate. Corolla subcampanu- 
late, the long segments recurved above the middle. Horny margins of the anthers angularly 
projecting; the membranaceous summit elongated, erect, oblong.' Stigma with a cylindrical 



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160 LNI'IED STATES AND MEXICAN BOUNDARY. 

beak, which ia somewhat longer than the erect anther-membrane. Pods not seen. We refer 
this plant to Metasteima with much doubt, hut there ia no other genus to which it seems to be 
more allied. It occurs also in Lindlieimer'a Texan Collection, 

RouLiNiA VSIFA.V.IA., Engelm. MSS. Qonolohas auifarivLn, Scheele in Linncea, 21, p. 760. Shady 
thicketSj near the Rio G-rande, western Texas and New Mexico, July — October ; Scliott, Bige- 
loio. (Nos. 54ij and 1&12, Wright.) I fear that it is too near R. Jacquini. 

AcERATBS vmimFLORA, Ell. Sk. I, p. 317 ; Becaime in DO. Prodr. 8, p. 522. Asclepias 
viridiflora, Fursk, Fl. 1, p. 181, Western Texas ; Bigehtv. No. 1693, Wright, is a variety 
■with broadly ohovate and emarginate leaves. In my Flora of the Northern nnd Middle States 
(2, p. 182) I incorrectly referred Asclepias ohovata, Ell., to this variety ; a mistake which has 
been copied by Decaisne. Elliott's plant is a ger'uiiie Asclepias ; but A. obtusifolia j9, Torr., 
also referred by Decaisne to A. ohovata, is our A. Jamesii, described below. 

AcBEATES DECUMBENS, Decaime, I. c. Anantherix decumhens, Nutt. I. c, p. 202. Valley of 
the upper Eio G-rande and westward to the Gila river, April — August. 

AcERATES A0RICI1LATA (Engelm. MSS.): "caule erecto glabro ; foliis sparsia linearihus filifor- 
mibus ; umbellis pluribus axillaribus multiflorus breviter pedunculatis ; pedicellis pilosis, calyce 
extua villoso ; corollte laeiniis reflexis ; cucullis gynostegio globoso seesili brevioribus apice 
leviter tridentatis margine involutis basi latissime biaiirlculatis ; folliculia lanceolatis longe 
Tostratis brevibus," Dry ravines near the Copper Mines, and along the Mimbres, June — July ; 
Bigelow. Stem 2-3 feet high, somewhat glaucou'!. Leaves slightly scabrous on the margin, 
which is not revolute, 4-C inches long, ^-^ line (rarely as much as a line) wide. Pedicels 6 
lines long. Lobes of the corolla 2^ lines long. Horny wings of the anthers rounded, not 
angular as in most Asclepiadeie, Pollen-masses also, of an unnsual shape, curved, nearly 
equally wide, and obtuse at each end: remarkable, also, for the large triangular wings at the 
sides of the hoods. Pods 3 or 4 inches long. Resembling A. angustifolia, but easily dis- 
tinguished by the perfectly smooth stem and non-revolute leaves, but especially by the larger 
flower, the peculiar structure of the cucuUi, and the shape of the pollen- masses. This is No. 
706 of Fendler's New Mexican Collection, and No. 1687 of Wright's. It was found also by 
Fremont on the upper Arkansas. Doubtless it has often been confounded with A, angustifolia. 

AcERATES (Ananthbrix) tombntosa (u, sp,): albo-lanata; caule erecto simplici; foliis ovatis 
acutis sessilibus basi rotundatis v. cordato-amplexicaulibus ; umbellis sessilibus plurifioris; 
gynostegio sessili ; cucullis suborhicularis aaccatis apertis lateraliter compressis, (Tab, XLIV.) 
Mountains east of San Diego, California, June ; Parry. San Isabel, in the same State ; Thurher. 
We have also specimens collected by the Bev. Mr. Fitch, in some part of California. Stem 2-3 
feet high. Lower leaves 4-5 inches long, and nearly 3 inches wide, usually clasping at the 
base. Umbels 3-4, in the axils of the upper leaves, 8-12-flowered; pedicels 1-1| inch long, 
very densely clothed with white wool. Flowers a third larger than in Asclepias Oornuti, " of 
a chocolate-purple color." {Parry.) Petals ovate, reflexed, woolly externally. Hoods of the 
crown nearly orbicular, spreading, without any trace of a spur, the margin of the orifice entire 
and introflexed. The horny wings of the anthers almost rectangular at the base. Follicles 
oblong-lanceolate, downy. This is a remarkable species, belonging rather to the subgenus 
Anantherix than to Acetates proper, 

Sarcostemma BiLOBUM, Hook. & Arn. Bot. Beechey, p. 317. S. cynanchoides, Decaisne, I. c. 
p. 540. S. Tcxanum, Engelm. MSS. Gonolobus cynanchoides, Engelm. & Gray, PL Lindh. 1, 
p. 43. Borders of the Eio Grande, from Presidio del Norte to Eagle Pass, June — October ; 



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BOTASY. 16 1 

Parry, SchotL Valley of the Linipia; Bigdow. Sonora ; Thurher. (No. 1680, Wright. No. 
004, 1951, and 2334, Berlandmr.) This slender vine climbs trees to the height of 30 or 40 feet, 
or trails over shrubs and other pianta. The flowers have ixa agreeable odor. I strongly suspect 
this to be the Gonolobus viridifloruSj NutL (not of Itoem. d Schidt.) It ie certainly the plant 
so named in my account of the plants collected by Dr. Jamea in Long's Espedition, and, I think 
it was so regarded by Mr. Nuttall, who cursorily examined those plants in my herbarium. 

Sarcostemma blegans, Decaisne, I. c. p. 541 ? Kocky places, Presidio del Norte, July— 
August ; Farry. Camp Bache, and on the Cibolo of the Rio &rande ; Bigelow. Our plant 
accords with the description of Decaisne, but it may be a distinct species. It diifers from the 
last in the strongly pubescent stem and leaves; the flowers twice as large, and the segments of 
the corolla oblong and obtuse, with a reticulate venation; whereas in S. cynanchoides the 
divisions of the corolla are ovate and acute, with several parallel longitudinal veins. The 
follicles are pubescent, about 4 inches long, half an inch wide in the middle, and tapering to a 
long point. 

Sarcostemma undulatum (n. sp.): volubile, glabratum; foliis linear! 4anceolatis acutis ban 
subanriculato-cordatis margine undulato-crispatis ; pedunculis petiolo 2-3-iilo longioribus pluri- 
floris; corona staminoa txteriore pelviformi int^gerrima, interiore foliolis ovatis obtusis gynos- 
tegio brevioribuB. Mountains east of the Rio Gi-rande, 70 miles below El Paso, June; Parry. 
Copper Mines, New Mexico; Bigelow. (No. ]fi78, Wright.) Wtem 2-3 feet long, twining, or 
sometimes prostrate. Leaves 2-4 inches long, and 5-8 lines wide in the middle; tapering to a 
long point, usually dilated and auriculate-cordate or somewhat hastate at the base; the mid- 
rib often whitish on both surfaces; the margin more or less undulate or crisped; petioles about 
half an inch long. Umbel 8-10-flowered. Peduncles 1-1^ inch long, and the pedicels about 
the same length. Flowers half an inch in diameter. Segments of the calyx linear-lanceolate. 
Corolla rotate, purple, smooth internally and externally, the margin eiliolate ; segments oblong, 
obtuse. Gyi.08tegium nearly sessile. Pods 3 inches long, 4 lines in diameter, tapering at each 
end, slightly pubescent. Resembles S. crispum, Btnth., but that is a humbles pecies, (only half 
a foot long,) the peduncles barely ef^ual the petioles, and the exterior stamineal crown is 
annular ; while in our plant it forms a distinct cup. 

Sarcostemma heteropiiyllum (Engelm. MSS.; Torr. in Pacif. Baitroad Bep. 5, p. 363): puber- 
«la, Yolubile ; foliis anguste-linearibus brevi-petiolatis acutis haai eordatis v. eordato-hastatis 
(raro) acutiusculis ; peduneulis plurifloris petiolo multo longioribus; corolla laciniis patulis 
ovatis acutis ciliatis extrorsum puberulis introrsum glabris (purpurascentibus ;) corona stam. 
exteriore pateriformi Integra, inter, foliolis suborbiculatis gynostegium subaq^uantibue ; folH- 
culis longe attenuatis. Eavines and rocky places, borders of the Rio Grande, western Texas, 
New Mexico, and Chihuahua, westward to Sonora and San Luis Eey, California, April — June. 
(No. 1681, Wright.) Stems numerous, from a somewhat ligneous base, 1-3 feet long, slender. 
Leaves 1-2 inches long, ^-2^ lines wide, the lower and middle ones more or less cordate, or 
cordate-sagittate at the base, the lobes entire or denticulate ; uppermost leaves sometimes acute 
at each end ; petioles 2-4 lines long. Peduncles 1-2 inches long ; umbel 8-12-flowered, the 
pedicels much shorter than the peduncles. Flower about one-third of an inch in diameter ■ 
exterior corona in the form of a shallow cup. Gynostegium nearly sessile. Corolla brownish 
purple. Near S. lineare, Benth.* 

" Wc have Sarcostemma clausiim, J/oPH. S( Sckull., from Key West, where it was found by the- liitf; Mr. BIntlgott. 
21 k 



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102 UNITED STATJiS AND MEXICAN BOUNDABY. 

Sarcostbmma iieteeophyllum ; var.? umliellis 5~K-florisj pedicellis pedunculo subfequalibua; 
ilovibus majoiibus; coroUie laciniis oblongk obtusis. Gravelly hills, Bock Greet, and near 
Camp Bacbe, also at the mouth of the Great Canon of the Rio Grande, June— July. (No. 1679, 
Wriglit.) Perhaps distinct from S. heferophylliim: ive have seen no intermediate forma. The 
leaves are usually longer and wider ; the flowers are of a dull purple color, and the segments of 
the corolla are more strongly ciliate. Gynostegium distinctly stipitate. Follicles 4 inches long, 
aiute at the base, and tapering to a long point. 

AscLEriAS SuLUVANin, Engelm. in Gray's Manual, ed. 2, p. 352. Hill sides, Muerte and Rock 
Creek ; also at the Copper Mines, July — August ; Bigdow. The pods are sometimes almost 
entirely free from warts or spines. Leaves often very obtuse, or even emarginate, 

AiCLiviAS Jamesii (n. sp.) : glaberrima, subglauca; foliis orbiculato-obovatis subcoriaceis 
retusis vel emarginatis basi cordatis brevissime petiolatis ; umbellis multifloris brevi-peduncu- 
latis ; gynoBtegio constricto ; cucuUis dilatatis truneatis ; processu arcuato falciformi acutissimo 
exserto ; folliculis ovatis lievibus. A. obtusifolia var.? latifolia, Torr. in Ann. Lye. 2, p. IIT. 
Plains near the Limpio Mountains, July ; Bigelow. Tascate, Sonora, July; Parry. (No. 1682, 
IVright.) Stem stout, 1-2 feet high. Leaves 3-4 inches long, and 2^-3^ wide, somewhat 
coriaceous, transversely and reticulately veined, mostly retuse or emarginate, with a small 
abrupt point ; the lower ones almost orbicular ; petiole 1-3 lines long. Umbels several, in the 
axils of the upper leaves. Peduncles 2-4 lines long. Flowers much resembling those of A. 
Sullivantii. Corolla greenish ; segments broadly ovate. Hoods of the crown purplish, very 
broad, obliquely truncated, the horn with the acute point exserted and projected partly over 
the stigma, the upper margin undulaculy 2-3-toothed. Horny margins of the anthers angularly 
dilated at the base. This species was first discovered by Dr. James, on Long's Expedition to 
tbe Rocky Mountains, and was doubtfully regarded as a variety of A. obtusa in my account of 
the plants collected by that botanist. It was afterwards found by Lieut. Abort, as well as by 
Fendler, in New Mexico. 

Asclepias bhosa (n, sp-); puberula deinde glabrata; caule erecto simplici; foliis oblongo-ovatis 
subcoriaceis acuminatis sessilibus margine eroso-denticulatis ; umbellis multifloris ; penduncnlis 
folio duplo brevioribus; cucullis obovatis obtusis longioribus; gynostegio constricto, processu 
subulato arcuato longe borizontaliter exserto ; folliculis ovatis, acuminatis lasvibus. — Valley 
of tbe Gila river, near Metate, May — June ; Schott, Thurher. Stem apparently 2-3 feet high, 
stout. Lower leaves 5-7 inches long, and 2^ broad, with a long acute point, very rough on the 
margin, with irregular conspicuous cartilaginous serratures. Umbels 5 to 7, about half as long 
as the leaves ; pedicels 1^ inch long, pubescent. Flowers as large as in A. Cornuti. Corolla 
greenish white ; segments at length reflexed. Hoods of the crown obliquely truncate at the 
summit, the subulate horn exserted horizontally. Pods (immature) about 2 inches long, and 
nearly an inch in diameter at the middle. — Apparently allied to A. glaucescens, S. B. t&, K., 
but that species has obtuse leaves, much shorter pedicels, and a subsessile gynostegium, which 
is about the length of the hoods. 

Asclepias arbnaria (n. sp.): incano-pubescens, deinde glabrescens ; caule simplici; foliis 
oppositis obovatis vel inferioribus ovatis breviter petiolatis, superioribus emarginatis vel retusis ; 
pedunculis brevibus multifloris, cucullis dilatatis obtusissimis utrinque unidentatis gynostegio 
anbsessili longioribus, processu subulato apice subrecurvo ; folliculis oblongls attonuatis 
Iffivibus. — Sandy banks ; Journado del Muerte, and on the upper Rio Grande, in New Mexico, 
June — July. Plant 12-18 inches high, (apparently sometimes assurgent or prostrate.) Leaves 



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BOTANY. 163 

2i|-4 inches long, and 1^-2^ inches wide, when old nearly glabrous and somewhat coriaceous ; 
petioles 2-3 lines long. Peduncles scarcely an inch long. Umbels several, in the axils of the 
upper leaves, 15-25 -flowered. Corolla greenish white ; hoods dull pale purple. Follicles 4 
inches long, and an inch in diameter in the middle, attenuated to a long point. Allied to 
A. Jamesii. 

AscLEPiAS BtiMMtiLARiA (n. 8p.) : caulo huraili ; foliis oppoaitis orbiculatis albo-lanatis ; 
pedunculis folio longioribiie ; cuculiia ovatis gynoategio sessili subduplo longioribus, processn 
falcato vix exeerto. (Table XLV, A.) Copper Mines, New Mexico, April ; Bigelow, Thurher. 
Santa Maria, Chihuahua; Parry. Santa Cruz, Sonora; Gapt. E. K. Smith. — Stems several 
from a thick ligneous root-stock, 1-2 inches long. Leaves iu 2 or 3 closely approximated paira, 
1-1^ inches iu length and breadth, with a very short abrupt acumination, often slightly cordate 
at the haae, clothed with a softly white pubescence. Peduncles 2 or 2| inches long ; umbel 
15-20-flowered, the pedicels about three-fourths of an inch long. Corolla greenish white ; the 
segments oblong and refiexed. Hoods obliquely truncate inward, entire, somewhat spreading. 
Projecting margins of the anthers rounded. Pollen-masses triangular. Immature pods ovate, 
toraentose. — A remarkable species ; very distinct from any other of the genus. It has much the 
habit of Steinheilia radians, as represented in Deless. To. 5, t. 61. 

AscLEPiAS iHVOLUCRATA {Engclm. MSS.): caulibus e basi lignoso hrevi pluribus ; foliis oppositis 
alternisve lineari-lanceolatis brevi-petiolatis margine tomentosis ; umhellis terminalibus sessiiibus 
foliis 2-4 involucratis ; cucullis ovatis acutiuscuiis patentibus gynostegio subduplo longioribus ; 
proceasu cultriformi vix exserto ; folliculis ovato-oblongis lasvibus. — Sandy soils, on the Mimbres 
and near the Copper Mines ; also sandy plains between Laguna de Guzman and the Eio Grande ; 
April — May ; Bigelow, Thurher. San Luis mountain, Sonora ; Capt. E. K. Smith. (No, 1690, 
WrigU. No. 107, Ftndler.) Stems 3-6 inches long, erect or spreading, somewhat pubescent. 
Leaves I^-2-J inches long, opposite and alternate, mucrouate, nearly smooth above, except on 
the margin, a little pubescent on the veins underneath. Umbel 10-15-flowered, involucrate, 
with 1-2 pairs of leaves similar to those of the stem. Pedicels about three-fourths ot an inch 
long. Corolla greenish white, the segments ovate and reflexed. Hooda spreading, and their 
points often a little recurved. Margin of the anthers projecting and acutely angular at the 
base. Pollen-masses pyriform. Pod 2| inches long, and J inch in diameter, acute, but scarcely 
attenuated at the summit. 

AscLEPiAS BRACHYSTEPHAHA {Engclm. MSS.): caule ramoso; foliis oppositis lineari-lanceolatis 
longe angustatis basi in petiolum brevem attenuatis glabratis ; umbellis pluribus extra- 
axiilaribus peduuculatis plurifioris ; cucullis truncatis antice bidentatis gynostegio sessili 
dimidio brevioribus, processu falciformi verticali ; folliculis oblongis lisvibua. — Sandy soils. 
Valley of the upper Bio Grande, Chihuahua, and Sonora; April— July. (No. 1692, Wright.) 
Dr Gregg found it in dry valleys west of Saltillo. Stem 8-12 inches long, branching from the 
base upward. Leaves 3-6 inches long, gradually tapering from a rather broad base to a long 
narrow point ; petiole 2-3 lines long. Umbels 3-8 on each branch, the peduncles much shorter 
than the pedicels. Corolla dull purple, the segments ovate-oblong, reflexed. CueuUi broader 
than long, the inner margin produced into a tooth above. Margins of the anthers angular at 
the base. Pollen-masses pyriform. Pods 2 inches long, acuminate. 

ASCLEPIAS INCARNATA, Ltnn. 8p. p. 314; Decaime, I. c. p. 567. Copper Mines, New Mexico, 
July ; Bigeloiv. Var. foliis lato-liuearibus vix puberulis. Banks of Devil's river, western 
Texas, September ; Bigdow. Lower Rio Grande ; Sohoit, Wright. 



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'Gi UMITED STATES A^D MEXICAN 150UKDAET. 

AscLEPiAS TTJBEROFA, Linn. Sp. p. 3"1(); Becaisiie, I. o. Wesiern Texas, Now Mexico and 
Sonora, Juno— July, 

AsoLBPiAS PARVJFLORA, Willd. Sp. 1, p. 1267 ? Eaviries head of Eock Creek, western Texas, 
July; Bigeloio. (No. 1684, Wright.) Many years ago, Prof. L, K. aibbes, in iiis Catalogue 
of the Plants of Columbia, South Carolina, (p. 11,) showed that the seeds of this species (at 
least in his specimens) " want the usual comose appendage of the genus I" I have verified his 
observation in specimens from various parta of the southern States. In Dr. Bigelow's plant 
the seeds are crowned with a tuft of hairs, and yet 1 canuot find that it differs in any other 
respects from the conimoo A. parviflora, except that the flowers are about one-third larger. 

AscLEPiAs VERTiciLiATA, Linn. Sp. p. 315 ; Becai&ne, I. c. A. linearis, Schede in Linncea, 21, 
p. T58. Plains between Van Home's Wells and Muerte, July ; Bigeloio. Guadalupe river, 
Texas ; Schott. 

Var. GALioiDES, Deoaisne, I. c. A. galioides, H B. K. Near San Elceario, May ; Pamj. 
New Mexico and Sonora ; common. (No. 1685, 1686 and 1689, WrigJit.) Our plant seems to be 
the same as Hartweg's No. 215. 

AacLEPiAs FASCicuLARis, Decaistic, I. c. p. 569. A. macrophylla, NuU. PI. Gamh. in Joum. 
Acad. Sc. Pkilad. (n. ser.) 1, p. 180. Grassy places near San Luis Iley, California, October, 
(in fruit) ; Pan-y. Variable in the breadth of the leaves. 

Aeclepias LmAKiA, Cav. Ic. 1, p. 42, (. 57, ex Decaisne, I. c. p. 570. Sierra de Pajarilo, 
YanoB, Sonora, May ; Scltoft. Between Saltillo and San Luis Potosi ; Berlandier (No. 1350) 
& Oregg (No. 562.) 

AecLEPiAS MACitOTis (n. sp.) : nana, snffrnticosa; caule ramosissimo ; ramulis rigidis unifariam 
puberulis ; foliis oppositis anguste linearibus glabris mucronatis; pednnculis brevibus extra- 
axillaribus paiicifloris ; cuculHs longissinie lineari-attenuatia patulis margine pubescentibus ; 
processu obtuso vis exserto ; gynostegio sessili breviseimo. (Tae. XLV, C.) Hocky hilla near 
El Paso, and on the mountains below San Elceario, Miy — June ; Bigelow, Parry. (No. 1691 
Wright.) Stem about a span high intricately branched from the thick crooked base, which is 
somewhat ligneous, the branches terete. Leaves 1-1^ inch long and half a line wide, revolute 
on the margin. Umbels 4-5-flowered. Peduncles 2-3 lines long ; pedicels 4-5 lines. 
Segments of the calyx lanceolate. Corolla pale purple ; the segments ovate and reflexed. 
Hoods with an ovate base, their elongated tapering extremities diverging horizontally; the horn 
slightly curved, short and obtuse, pubescent near the summit. Gynostegium very short, clostly 
sessile, anthers broader than long, with narrow cartilaginous margins. Pollen-masses elongated 
pyriform. Pods oblong, lanceolate, acuminate, even. This very remarkable species has been 
ibund only in the places mentioned above. It has much the appearance of Gomphocarpua 
revolutus of South Africa. 

AscLEPiAS (Otaria) LONGicoimu, Bentk. PI. Harho. p. 24; Decaisne, I. c. p. 570. A. Lindhei- 
meri, Engelm. d Gray, PI. Lindli. 1, p. 42, {No. 272.) Plains and rocky places, New Mexico 
and western Texas, along the middle and lower llio Grande, June— September. Borders of 
Aqua Fria river, Mexico ; Gregg. (No. 1683, Wright.) 

Aeclbpias subulata, Decaisne, I. c. p. 571; Torr. in Pacific E. Road Expl. 6, p. 362, t. 7. 
Lower California, near the Mexican boundary line; Parry. Eavines and hills sides of the 
desert, near Fort Yuma, June ; Schott. 

Seuiera maritima, Dtcaisne in DO. Prodr. 8, p. 500. Cynanchum an g us ti folium, Pers. Stjn. 
1, p. 214; Nait. Gen. 1, p. 161. Saline marshes near the sea coast, western Texas ; Wright. 



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BOTANY. 165 

GoNOLOBus GBANULATns (Schecle in Linncea 21, p, 759.): volufciiis pilis patentibus vel reversis 
hirsutas ; fbliis longiua petiolatis ovatia acuminatis profunde covdatia ; pedunculo petiolum 
superante ; umbelHs paucifloris ; coro]]i« laciniia ovatia obtusis reticulato-venosia extua pilosius- 
culie, iiitus glabris ; corona statu, annuliformi ; g jnoategio substipitato applanato ; antherarum 
cuspidibus tenuieaimis inflexia ; stigmate nudo ; folliculia lanceolatis sparsim echinatis glabria. 
Mountaiii ravinea, near Live Oak Creek, September; Bigeloiv. Sonora: ScJwtt. Monterey, Neuvo 
Leon ; Dr. Edwards and Major Eaton. (No. 543 and 16'74, Wright, No. 350 Ltndheimer's 
Texan Coll. 1846.) Stem herbaceoua, twining over sbrubs and small trees. Leaves varying 
from 2-3| inches long, and Ii^-2^ incbes wide, slightly pubeacent on both sides ; the petiole 
8-10 lines long. Pedunclea usually about one-fourth longer than the petioles. Umbel (or 
rather very abort raceme) 4-8 - flower ed ; the longer pedicels about an inch in length. Flowers 
6 or 6 linea in diameter. Calyx hairy ; the segments lanceolate. Corolla rotate, greeniah or 
purpliah, with darker reticulated veins. Stamineal crown reduced to a narrow ring, Antbera 
with the membranous appendage very thin and inflcxed under, not lying on the stigma. 
Pollen-masaes obliquely obovate. Stigma obtusely 5-angled, flat. Follicles 4^ or 5 inches long 
and about | inch in diameter, armed with diatant, subulate, rather firm pricklea. 

Lachnosioma? parviflora (n. ap.): humifusum, pilosum ; foliis ovatia ve! orbiculato-ovatis 
acutia brevi-petiolatis ; pedunculis folio multo-longioribus ; floribus primo umbellatis deinde 
racemosis ; corolla rotata, laciniis ovatis ; coronfe etam. phyllis 10 biseriatis, 5 exterioribua 
alte bifidis laciniis acuminatis, 5 interioribus subulatia utriaque gynostegio longioribus ; folliculia 
ovato-oblongis apinia innocuia villoaia denae onustis, San Pedro Creek, weatern Texas ; Wright 
(No. 16T3.) Table-land between Ringgold Barracks and Laredo, on the lower Rio Grande 
June — July ; Schott, Root tuberous. Stem clothed with a gray spreading pubescence, branch- 
ing from the base; the branchea 8-12 inches long. Leaves varying narrowly to broadly ovate 
about three- fourths of an inch long, usually waved and often crisped on the margin. Peduncles 
axillary and subterrainal, at first only a little longer than the leaves, but in fruit twice or thrice 
longer. Umbels or racemes 5-10-fiowered. Corolla about 2^ lines in diameter, purplish, 
Stamineal crown consisting of 10 distinct leaflets in a double series ; the 5 exterior cleft about 
halfway down, the points curved over the stigma ; the 5 interior subulate, arising from the 
base of the exterior leaflets, which they considerably exceed in length, and are likewise curved 
over the stigma. Gynostegium sessile. Pollen-masses nearly orbicular. Pods 2-3 inches 
long, densely covered with short thick rather fleshy processes. This plant can scarcely bo 
relerred to any of Decaisne'a genera, but I am unwilling to propose a new genua for its reception 
while my knowledge of the Mexican Asclepiadaceaa is so imperfect. 

GoNOLOBos EiFLOiius, NiiU. Chthamalia biflora, Decaisne in DO. Prodr, 8, p. 605. Dry 
prairies, western Texas ; Wright, (No. 543.) New Braunfels, Zindheimer, (No. 162.) Stems 
prostrate, 1-2 feet long, not twining. Flowers dark purple. Lobes of the stamineal crown 
with an internal ridge which is produced into an iuflexed curved process. Follicles 3-4 inches 
long, echinate with soft prickles. C. pubiflora, Decaisne, I. c., is Gonolobua prostratus of 
Elliott, but not of R. Brown. 

GoNOLOBUs (OiriHAMALiA) CYNAKCHOIDES, Engelm. (& Gray, PI. Zindh. pars 1, p. 43. "Western 
Texas, Wright. Nearly related to the last, but differs in the smaller flowers, and in the short 
excavated process of the lobes of the corona. (No. 545, Wright. Ko. 1951, Berlandier.) 

GosoLOBUs (Chthamalia) peoductus (n, sp.) : caule voluhili pubeacente ; foliis ovatis longe 



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ibb UNITED STATES AHD MEXICAN BOUNDAEY. 

acuminatis cordatis, auriculis approximatis rotundatis puberulla ; pedunculis petioliii fiuba3C[ua- 
libua 3-5-flons ; corolla campaniilata, tubo brevi, laciniia lacceolatis erectis ; corona stain, 
cupuliformi crenato gynostegio breviore ; folHculia (immaturis) ItevibuH. Climbing over bushes. 
Banks of Rock Creek ; Bigeloio. Valloj' of the Limpio, and along tbe Rio G-rande, June; Parry, 
(No. 1675, Wright.) It was also found by Br. Gregg, in Cadena, Mexico. Plant 2-4 feet 
long, twining around low bushes or trailing on the ground. Lower leaves about 2 inches long ; 
the deep sinus at the base often almost closed by the approximation of the auricles. Sepals 
ovate-lanceolate, with a minute gland on the inside of each sinus. Corolla about 4 lines long, 
mostly of a dull purple color, but sometimes greenish. Stamineal crown a shallow cup, about 
two-thirds the length of the gynoafegium, with the margin crenate or slightly lobed. On the 
inside are 5 adnate processes which are connected with the gynostegium and outwards terminate 
in a short tooth which is not exserted. Stigma obtusely 5 angled. Pollen-masaes short and 
roundish. There are no ripe pods in the collections. 

GoHOL0BUs(?) PARviEOLius (q. sp.) : pubescens ; caule prostrate ramosissimo vix volnbili ; 
foliis (semiuneialibus) deltoideo-ovatis baei cordatis crassiusculis ; floribus axiUaribus solitariis 
vel geminis sessilibua ; corolla urceolato-rotata ad mediam usc[ue 5-lobata; corona stam. 
5-loba, lobis ovatis obtusis gynostegio brevioribus ; folliculia lineari-lanceolatis longe attenu- 
atis lievibus. Sides of hills, canon of the Rio Grande, below Mt. Carmel, October; Parry. 
Mountain near the Urapia, western Texas ; Wright. Stem 12-18 inches long, the upper 
branches somewhat twining. Leaves 4-6 lines long, deltoid or sometimes hastate-cordate, 
rather acute, mucronate; petioles half as long as the lamina. Flowers on short axillary 
pedicels. Corolla about 2^ lines in diameter, dull yellow, (brown when dry ;) the lobes trian- 
gular-ovate. Stamineal crown 5-lobed, the lobes obtuse or slightly emarginate, concave, with 
a prominent ridge on the inside. Stigma obtusely 5-angled, flat. Pods 3| inches long, tapering 
to a long slender point. 

OLEACEJi:. 

Fraxinus Scheidbana, Sckliclit. d Cham, in Linnaia, &,p. 391 ; DO. Prodr. Q,p. 278. Var. 
PARViFOLiA : foliolis l-3-jugi8 vix uncialibua. Rocky places in limestone districts on the Rio 
Grande, from the San Pedro to the Pecos ; Sclvott. Mountains of Santa Rosa, Cohahuila ; 
Bigelow, Parry. A graceful shrub 5 or 6 feet high. 

Fraxisus vmiDis, Michx.f. Sylv. 2, p. 197, t. 120. Var. Bbrlandieriana. F. Berlandieriana, 
DO. I.e. Near Eagle Paas on the Rio Grande; Bigelow. (No. 602 and 2112, Berlandier. 
No. 653 (Coll. 1846) and No. 41, (Coll. 1847,) Lindheimer.) Leaflets 5-7, or often 3, mostly 
cuneate at the base, shining on the upper surface ; the teeth larger and more salient than in the 
F, viridis of the Middle States ; the fruit also is more acute. 

Fraxintjsfistacisfolta, Torr.inBot. Whippl. Bep.p.\28. F. veliitiaa,, Torr. in Emory, Bep. p. 
149. On the Rio Grande and its tributaries. Near the Copper Mines, New Mexico ; Bigelow. 
(No. 1697, Wright.) Ojito, Mexico ; Gregg. Sonora ; Schott. A downy variety, with narrowly 
lanceolate attenuate leaves, was found by Mr. Thurber at Guadalupe Canon, Chihuahua. This 
species often grows from 15-20 feet high. Sometimes it attains the height of 30 feet. The fruit 
is often 3-winged. 

Fraxinus ouspidata (n. sp.) : foliolis 2-3-jugis lanceolatia vel oblongo-lanceolatis acutis cuspi- 
datis serratis vel integerrimis utrinque glabris longe petiolulatis ; samaris oblongis utrinque 
obtusis. Eagle Mountains and Great Carion of the Rio Grande ; Parry, Bigdow. (No. 1698, 



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BOTANY. 167 

Wright,) (mixGcl in my set with I", pistaci^folia.) A well cliaracterized species, easily known 
by the small fmit (scarcely 8 lines long,) which is hroad in proportion and not contracted at the 
haae. The leaflets are narrower and entire in Mr. Wright's specimen, while in Dr. Parry's 
they are broader and mostly serrate. 

Fbaxikus dipetala, Booh. & Am. Bot. Beecli. p. 3C2, t. 87. Var.? trifoliolata : foliolis uni- 
jugis ovatia vel ohovatis integerrimis aut versus apicem crenato-serratia basi in petiolulum atte- 
nuatis ; samaris lineari-oblongis emarginatis. Sterile mountains a few milea south of the Mexi- 
can boundary line, in Lower California, July (in fruit) ; Parry. A shrub or small tree growing 
in clumps, sometimes 20 feet high, with a trunk three inches in diameter. Leaflets never more 
than a single pair and a terminal one ; aometimes, indeed, reduced to the single terminal one ; 
the largest scarcely more than an inch long ; common petiole channelled above. Flowers not 
known. Fruit in a loose cymose panicle, about three-fourths of an inch long, and 2^ lines 
wide, (in one specimen 3 lines wide,) only a little contracted at the base. As the flowers of 
this ash are unknown, and the fruit of F. dipetala has not yet been seen, it remaina uncertain 
whether they are distinct, or are only extreme forms of one species. 

FORESTiEKA PHiLLYREOiDiS. Piptolepis phillyreoidee, Bewi/j. P?, Hartw. p. 29. Var. spathu- 
laeb'olia: foliis spathulatia subooriaceis. Near Monterey, Neuvo Leon and plains west of San 
Pablo ; Gregg. A shrub about 5 leet high. Not yet found in fruit. There can he no doubt 
of the identity of Piptolepis and Forestiera. The flowers of both agree in all essential characters. 
We place this genus in Oleacea; where we have for many years regarded it as belonging, adopt- 
ing the view of Hichard, who more than half a century ago, said of it " genus afline Chionan- 
tho."* Other authors have pointed out its affinity to Oleaceae ; but more recently Tulasne.f 
has clearly shown that this is its true place. 

FOREHTiERA LiGUSTRiNA, Potr. Em. Suppl. 2, p. 664. F. pubescens, Nutt. in Trans. Amer. 
Phil. Soc. (n. ser.) 5, p. 17T. Adelia liguatrina, Mickx. Fl. 2, p. 224. Borya liguatrina, Willd. 
Sp. 4, 711 ; Pursh, Fl. 2, p. 22. Borders of the Rio Grande in western Texas, and in 
Chihuahua. Leaves about an inch long, obovate or obovate-oblong, mostly obtuse, abruptly 
narrowed at the base with a short petiole, slightly serrate, when young pubescent, hut at length 
nearly glabrous except along the midrib and on the petioles. Fruit oblong, about 4 times 
longer than the pedicels, dark blue, the pulp rather thick and sweetish. Nut nearly even. 
This is not an uncommon plant in Florida, and on the upper waters of the Eed and Arkansas 
rivers. Michaux has incorrectly described the leaves as very entire. 

Forestiera reticulata (n. sp.): foliis ovatis raraulisque glabris acutia vel acuminatis sub- 
coriaceis prominente reticulato-venosis denticulato-serratis subtus porulosis ; cymulis simplicibus ■ 
fructibus ovalibus, obtusis apiculatis pedicellis ^ longioribus. Crevices of rocka and in ravines 
near the Pecos, on the Eio Grande; Sckotl. Ravines near White Oak Creek; Bigeloto. 
Western Texas ; Wright, No. 565. Branches glabrous, but dotted with minute whitish warts. 
Leaves 1-1^ inch long, acute at the base, the veins strongly reticulated, especially (in the dry 
specimens) on the upper surface; the midrib very slightly pubescent underneath. Staminate 
flowers in small simple cymules with short pedicels. Fertile cymules 3-5 flowered. Fruit about 
3 lines long, very dark purple, with a thin sweet pulp, sometimes 2-ceIled and 2-seeded, Nut 
oblong, the shell thin and fragile, marked with prominent longitudinal veins. Seed conformed 
to the cavity of the shell; testa thin pale brown, slightly sulcate longitudinally. F. porulosa 

* Forestiera ditFers from Cliioiiaiithus ohiefly as from FiaxiniiE ornus. 
fAnnalesdesSc. Nat. , ser. 3, 15, p. Q.'>4. 



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168 UNITED STATES AND MEXICAN BOUNDARY. 

Pair., (Adelia porulosa, Michx.) which mach resembles this species, differs in its entire obtuse 
leaves, narrowly revolute on the margin, 

EoEESTrERA SPiiiERocAiiPA (n. sp.): foliis ad apicem ramulorum aggregatis, rhomboideo- 
oblongie parvulia aoutiusculis superne crenato-serratis titrinc[ue pubesceotibna ; cymulis fcemineis 
trifloris ; pedicellis pubescentibus fructii subgloboso vix dimidio brevioribus. Dry ravines near 
tlie Limpio, July (in fruit); Bigeloio. Leaves about three-fourths of an inch long, somewhat 
coriaceous, usually 4 or 5 together in a cluster at the extremity of the short branchlets. Fruit 
the size of a pepper-corn, with a thin pulp, dark purple and covered with a bloon. This species 
is easily distinguished by the small fasciculate leav«s and small subgiobose fruit, 

FoRESTiBRA AHQU8TIE0LIA (u. Sp.): foliis fasciculatis lineari-spathulatis vel anguste-lanceolatia 
integerrimis obtusia glabris obsolete venosis subtus poruloais ; fructibus ovatis acutis. Western 
Texas near the Rio Grande ; Wright, No. 566. Near New Braunfels and shore of Matagorda 
Bay, February ; iTO(?/(eimer. Matamoras, Tamaulipas ; SerfaWie?*, No. 3024. Mexico; Gregg. 
A large shrub, densely branched. Leaves in fascicles of 3 to 5, on very short spurs, or 
undeveloped branches. They are 8-10 lines long and 2-2^ lines wide, somewhat coriaceous. 
Cymules 3-5-flowered arising from the centre of the tuft of leaves. Bracteoles broadly obovate. 
Flowers hermaphrodite, 3-4-androus. In Berlandier's specimens the leaves are narrowly 
lanceolate, more coriaceous, and revolute when dry, 

JASMlNACEiE. 

Menodora scabra, Gray, in Sill. Journ. n. ser. 14, p. 44 ; Torr. in Bot. Facif, li. lioad Bep. 7) 
p. 18, t. Y. Western Texas and New Mexico ; Parry, Bigelow. Arroyo del Pozo Verde, Sonora, 
July ; Schott. Ojo de Vaoa, etc., Chihuahua ; Thurber. (No. 563 and 1694, Wright.) 

Menodora LONGiFLORA, Gray, I. c. Ravines and rocky hills along the Eio Grande and its 
tributaries. (No. 1695 and 1696, WrtgU.) 

Menodora hbtbrophylla, Moricand in BG. Pr<,dr. %,p. 316; Gray, I. c. Sandy plains and 
borders of streams, western Texas and Neuvo Leon ; May — October. 

ARISTOLOCHIACEAE. 

Aristolochia Califoknica, Torr. Bot. Whipp. Bep. p. 128. Napa county, California, March ; 
Thurher. 

Aristolochia LONffiFLORA, Engelm. d, Gray, PI. Lindh. 1, p. 51. Sandy alluvions of the Eio 
Grande, below the mouth of Los Moras, August ; Schott. 

Aristolochia brbvipbs, Benth. PI. Hartio. p. 15. A. Wrigbtii, Seemann, Bot. Herald, p. 330, 
t. 72. Dry rocky ravines northwestern Texas, Chihuahua, and Sonora. (No. 567, 568, and 
1700, Wright.) No. 1701 of Wright is a form with the lobes of the leaves narrower and less 
rounded at the extremity. Mr. Seemann's plant was collected in Durango. 

NYCTAGINACEiE. 

Selinocahpus DiFEdsus, Gray,l. c ; var. parvifolius : foliis parvis (vix semi-poUicaribus) ; 
floribus solitariis. Canons of the Eiu Grande, October; Parry. Presidio del Norte, August; 
Bigelow. 

OxYBAPHUS glabrifolius, Vahl. Enum. 2, p. 40 ? Western Texas, near the Eio Grande, below 
El Paso. This seems to have been collected only by Mr. Wright in his earlier explorations. It 
is his No. 605. Although the involucres are mostly 2 or 3-flowered, it may be only a variety of 
O. glabrifolius. 

OxYBPAHUSAHGRBOAius, VuMl. G. Plalns'noar the Limpio, Texas; Bigelow. (No. 1717, Wright.) 



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NYCTAGINACE^. 

MiRABlLis LONQiPtORA, Ltnn. ; Choisy in DO. Prodr. 13, pars 2, p. 428. Copper Mines, New 
Mexico, July ; Bigelow, Thurler. Mountains east of El Paso, Wright, No. 675 . his No. 1702 
is a glabrous or glabrate form of the species. 

MiRABiLis MULTiPLOKA, Gray. Osybaphus multiflorus, Torr. in Ann. Lye. N. York, 2, p. 237. 
Quamoclidion multiflorum, Torr. ; Gray, N. Gen. & Sp. Nyct. in Sill. Jour. ser. 2, 14, p. 321. 
Nyctaginia Torreyana, Chois. I c. Valley of the ilio Grande and a', the Copper Mines, April- 
August. San Felipe, California; Farry. (No. 1703, Wright; 740, Fendhr ; 1327, Coulter 
Mex. Coll.) ' 

MiRABiLis OXYBAPHOIDES, Groy. Quamoclidion oxyhaphoides. Gray, I. c. Western Mexico ; 
Bigelow, Wright. 

MiRABiLis Californica, (?7-c!?/. Oxybaphus Iffivis, 5ej!^7i. .i' 0. glabrifoliiis, ^brr. 5oi. Whipp. 
Bep.p. 131, non Vahl. (Tab. XLVl.) Dry hills, San Diego, Calirornia ; Pa'rry, Thurher. 
Somewhat prostrate, forming dease tufts commonly more or lees pubescent, and rarely glabrate. 
OxYBAPHUS NTCTAOiXiiiTP, Sweei; Choisy, I. c. Western Texas and New Mexico ; also in the 
adjijiuing Mexican States of Chihuahua and Cohahuila, near the Rio Grande. An extremely 
variable species, as is shown by Dr. Gray in his note below. 

OxYBAPHUS uiRSUTUs {Sweet; Choisy, I.e.): caule pilis pateiitibus hispido; foliia lanceolatis 
pilosis utriusque angustatis brevipetiolatia margine undulatis ciliatieque; involucris subsolitaris 
axillaribus ; pedunculis (3-4 linearibus) demum reflexis ; iuYolueris subtrifloris ; fructuhirauto 
inter eostas corrugato.— Gravelly hills on the Limpio, &c., July; Bigdoio, Wright. Stem 
12-15 inches high, apparently sometimes assnrgent, branching from the base, hispid with 
short-spreading or reflexed hairs. Leaves 2-2^ inches long, and 1-5 lines wide in the middle ; 
the uppermost ones more undulate than the lower. Peduncles slender, in the axils of the upper 
leaves; the uppermost ones appearing clustered from the branches beingundeveloped. Involucre 
hairy, at length broadly cimpanulate and reticulate. Flowers all fallen in our specimens. 
Fruit 2^ lines long, obovate. 

OxYBAPHus AKQUSiiFOUus, Sioeet; Choisy, I. c. p. 433. Plains and river alluvions, western 
Texas, New Mexico and Chihuahua ; June — September. 

OxYBAPHOS cocciNEDS (n. sp.): glaberrimus ; canle gracili ramosissimo erecto; foliis linearibus 
elongatis integerrimis ; panicula terminali laxa ; involucris 3-floris campanulatis 5-fldis, seo-raentis 
acutis ; perigonio infundibuliformi (coccineo) involucre 4-5-tie8longiore ; fructu clavato-oblon ^o 
profunde suleato. Hill sides, Copper Mines, and on the Mimbres ; Wright, (No. 1723) Thurher 
Bigeloio. Highlands between the Nueces and San Pedro ; April— June ; Schott. Santa Cruz 
Mountains, Sonora ; Capt. E. K. Smith. Boot ligneous, blaek and tortuous. Stems 12-18 
inches high, slender terete, panicnlately branched above. Leaves 2-3 inches long, and mostly 
about a line wide, but sometimes 2 lines. Inflorescence a loose eymose panicle. Involucre,'! 
sometimes solitary in upper axils and the pedicels recurved. Perianth about three-fourths of an 
inch long, funnel-form, with a long narrow tube ; the limb of a bright crimson, 5-lobed, witii 
the lobes notched. Stamens and style exserted. Fruit pubescent, strongly 5-ribbed and slightly 
rugose. This species is almost intermediate between Oxybaphus and Quamoclidion. 

Allionia incarnata, Linn.; Choisy, I. c. Sandy river-banks and on gravelly hill-side,';. 

Common in New Mexico, western Texas, and Chihuahua, westward to Sonora and California ; 

flowering from April to September. (No. 1716, Wright.) The 3 leaves of the involucre are 

ovate, concave, and are scarcely at all united at the base. Perianth campanulate-fnnnel-form 

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170 UNITED STATES AND MBKICIN BOUKBARY. 

mostly 4-lobed, the lobes notched. Stamena usually 3, not esserted. Fruit oval, the margin 
winged, usually 4-6-toothed on each side, and reflexed over the back, so that the opposite sides 
nearly meet, and thus partially conceal two longitudinal dorsal rows of ejiherical stipitate glands. 
Achenium oblong, apiculate with the persistent base of the style. 

Aeronia cycloptega, Gray, I. c. p. 319. A. (Tripterocalyx) mierantha, Torr. in Frem. ^st 
Rep. p. 96. Sandy places on tlie Eio Grande, from Dona Ana to San Elceario, April, June ; 
Wright, No. 1712. 

Abkonia arenaeia, Menx. in Hook. Exot. Bot. i. 193 ; CJioisy, I. c. Sea beach, Monterey, 
California; Parry. Flowers bright roae-color. Perennial fnsiform root sometimes 4 feet long 
and 2 inches In diameter. It is said to be eaten by the Indians. Common along the coast of 
California, and extending to Puget's Sound. 

Abkonia umkllata, Lam. 111. t. 5; Rook. I. c. t. 194; Choisy, I. a. Abundant on the coast of 
California. Boot smaller and more branching than in the preceding Kpecies ; Parry. 

Abronia mbllifbra, DougL in Rook. Bot. Mag. t. 2879 ; OhoUy, I. c. Sandy hills near El 
Paso, etc., westward to the Colorado, California, April— June The wings are triangular and 
terminate abruptly at the summit, where they are dilated laterally, so that the fruit appears 
truncated or turbinate. The body of the fruit is much shorter than in the next species. 

Abkonia PRA GRASS, Nutt. MS8.; Rook. Kew Jour Bot. b,p. 261 ; Torr. dt Gray, Bot. Beck- 
with Rep. p. 14, t. 10. Sandy hills on the upper Eio Grande, and west to Chihuahua, April 
to August. The mature fruit is distinctly but narrowly 5-winged. "What was cited as a dwarf 
form of A. mellifera in Bot. Whippl. Bep. p. 131, is A. fragrans. 

Nyctaginia capitata, Choisy, I. o. Western Texas and valley of the Rio Grande, common. 
{No. 1709, Wright; 680, Lindkeimer, *tc.) 

ACLEISANTHES LONGiFLORA, Gray, I. c. (Tab. SLVI.) Sandy soils, western Texas and valley 
of the Eio Grande, on both sides of the river, June— October. (No. 599 and 1704, Wright.) 
The stamens and style are frequently much exserted in the later flowers, as they are in those of 
A, Berlandieri. 

AcLEiSANTHES AKisoPHYLLA, Gray, I. c. In alluvial soil, Turkey creek, and on Eio San Pedro, 
western Texas. (No. 598 and 1706, Wright.) 

AcLEiSANTHEa Berlandieri, Gray, I. c, Nyctaglnia obtusa, Choisy, I. c. p. 429. Near Laredo, 
lower Rio Grande, June ; Schott. (No. 1705, Wright; No. 1544, 2007, 3044, and 3203, Btr- 
landier.) Leaves mostly acute. Flowers white, striped with pale purple. 

AcLEiSANTiiES CRASSiFOLiA, Gray, I. c. On the Eio Grande, from Los Moros up to the Pecos, 
October; Schott. (No. 599a, WrigJd ) 

Pentacrophys WRiGiiTn, Gray, I. c. p. 318. (Tab. XLVIl, B.) Eoeky hills near Leon 
Springs, Mexico, September ; Bigelow. Between Victoria and San Antonio, Texas ; Schott. In 
all our specimens the flowers are expanded, with a slender tube an inch and a half long and 
exserted stamens. The fruit of these flowers differs from that of the unexpanded precociously 
fructified ones from which Dr. Gray drew the generic character. The 5 glands, instead of being 
prominent and crowning the fruit, are small, rather depressed, and seated on a neck or con- 
stricted portion of the fruit a little below the summit. 

Seunooarpus chehopodioides, Gray, I. c. Gravelly hills and valleys on the Pio Grande, from 
Et Paso to the Presidio del Norte, and westward to Ojo de Vaca, Chihuahua, April— JuJy. 
(No. 1707, Wright.) 

Selinocarpcs angustieolius (n. sp.) : subviscoso-puberulns ; cauie frnticuloso e basi ramosis- 



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BOTANY. 171 

simo ; foliis angnsfco-ellipticis acutiuaculis ; floribus in axillis superioribas solitariis demum 
pendulis ; perigonio infundibiiliformi tubo breviuaeulo ; BtaminibusS vixessertia. (Tab. XLVII, 
A.) Gravelly table land near Presidio del Norte, August ; Parry, Bigehw. Stem apparently 
di'ffjise, the upright branches 6-10 inches high, slender. Leaves 6-8 lines long, 1-2 linea wide; 
the petiole scarcely a line long. Flowers on short pedicels in the uppermost axila, some of them 
fructifying without being fully expanded, but mostly with a dilated funnel-form border and a 
tube 1-2 lines long. Stamens and style a little exserted. Fruit as in the preceding species. 

BoERHAAViA PURPURASCENS, Gray, I. c.,p. 321. Hillanear the Santa Rita, Copper Minea, New 
Mexico ; Wright. Eavines and rocky hills, Presidio del Norte, July— August ; Farry, Bigehw. 
The inflorescence at length becomes elongated, the flowers separating from each other and 
forming interrupted or somewhat verticillate spikes. The species is closely allied to B. spicata, 
Clioisy. 

BoEBHAAviA WiiiGOTii, Gray, I. o. Santa Barbara, southern New Mexico, August ; Bigehw. 
Near El Paso ; JVrigJU. Copper Mines, New Mexico ; Thurber. 

BoBRHAAviA LiNEAHiEOLiA, Gray, I. c. Arid soils : valley of the Eio Grande, and near the 
Copper Minea, New Mexico, June— August. The lower leaves are sometimes ovate-lanceolate. 
BoERHAAVU ERECTA, Unn.; Ckoisy, I. c. p. 450. Western Texas, New Mexico, and Chihuahua, 
June— August. We follow Dr. Gray in referring to thia species, various forms of an annual 
Boerhaavia, of which there are numerous specimens in the collection. B. erecta, however, ia 
aaid by Choisy to be perennial. 

Boerhaavia panicdlata, Mich.; Choisy, I. c. Western Texas, near the Kio Grande, June- 
August. 

Boerhaavia asisophylla (n. sp.) : caulibus glabriusculis diffusis basi lignosis ; paniculis laxe 
ramosissimis inferne nudis, ramuiis filiformibus ; foliis ovatis cordatis brevi-petiolatis glabris 
undulatis in eodem pari inequalibus supra pallidis subtus albidis; floribus laxe subcymosis 
breviter pedicellatis basi 3-bracteolatis, bracteolis persistentibus lanceolatis acutissimia; peri- 
anthiis rotatia ; staminibus 5-8 ; fructibus obovato-oblongis glabris 5-co3tatis (non truncatis), 
coatis angustis. Entrance of the Great Canon of the Rio Grande, October ; Parry, Bigehw. 
Plant 1-2 feet high. Lower part of the stem slightly pubescent. Leavea in pairs, unequal in 
size, the larger an inch long and half an inch or more broad. Perianth nearly half an inch in 
diameter with scarcely any free tube, purple. Stamens and style much exserted. Fruit a line 
and a half long. Near B. linearifolia, but that is glandularly viscid or villous, the leaves are 
usually much narrower and hispid on the margin, and the costs; of the fruit are thick and 
rounded. Dr. Parry collected at the Presidio incomplete specimens of another Boerhaavia, 
which may be undescribed. It difiers from B. anisophylla in the much larger and more 
ditfused panicle, smaller flowers, which are mostly solitary at the estremity of the branchlets 
the hispid tube of the perianth, and the hairy fruit. 

Boerhaavia spicata, (Choisy, I. c. p. 456?) : caulibua e radice annua erectis minute pubescenti- 
bus ; foliis ovatis s^pius oUusia integris repando-dentatia v. undulatis, inferioribus subcordatis; 
panicul^ ramuiis in racemis sparsifloris desinentibus ; bracteis bracteolisque lanceolatis cuspi- 
datis ; floribus (minutis) triandris ; fructibus cjlindraceo-clavatis glabris obtuse 5-costatis apice 
rotundatis. Ravines and damp sandy places. Presidio del Norte ; Parry, Bigehw. Chihuahua ; 
Thurber. Valley of the Gila; Sohott; May— September. Plant 12-18 inches high, slender,' 
the stem somewhat viscous. Leaves an inch long, on conspicuous petioles, often dotted. Racemes 
when in flower scarcely half an inch long, but in fruit 1-2 inches. Flowers scarcely a line in 



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172 UNITED STATES AND MEXICAN BOUNDARY. 

diameter, on very short pedicels. Fruit 1^ line long. This seems to be the uarne aa No, 1425 
(which 18 without leaves) of Coulter'B Mexican Collection ; hut B. spicata, as described by Choiey, 
differs in the lanceolate acute leaves and in some other unimportant characters. 

BoERnAAViA scANDESS, lAnn.; Choisy, I. c. B. G-raliami, Gray, I. c. Dry ravines near the 
Cibola of the Eio Grande, Aijgust ; Bigeloio. El Podrero, Sonera, June ; Scliott. (No. 3204 
and 3205, Berlandier.) We can discover no essential difference between B. Grahami and our 
West Indian specimens of B, ecandens. Indeed, Dr. Gray suspected they were not distinct. 
The free portion of the calyx-tube is as short in the latter as in the former, and neither plant is 
climbing, being only prostrate, or not unfrequently even erect ; so that the specific name is in- 
appropriate. 

EoERiiAAViA EBiosOLBKA, Oroy, I. c. p. 322. Gravelly plains near Presidio del Norte, and 
below the Great Canon of the Eio Grande, September ; Parry, Bigelow. Annual. Plant 1-2 
feet high. Leaves orbicular- cord ate, 1^-2^ inches in diameter. Flowers often precociously 
fructified, and then the somewhat persistent tube becomes more or less elongated, sometimes 
5-8 lines or more ; but the limb, in such cases, does not expanl. 

BoEKDAAViA LEiosoLENA (n. sp.) : pereunis ; caule glabro erecto superne nudo ; foliis rotundato- 
cordatis carnoais utrinq^ue elevato-punctatis margine crenato-denticulatis glandules is que : pani- 
cuIec ramis distantibus paucifloris, pediceliis snbfascieulatis brevissimis ; bractels bracteoiisq^ue 
minutis; perianthii tubo elongate glabro ; fructn turbinate 10-striato ; staminibus 5. In gyp- 
seous soil, Great Canon ol' the Rio Grande, 70 miles below El Paso, June ; Parry. Stem 2-3 
feet high, arising from a somewhat ligneous root. Leaves 2-3 pairs, near the base of the stem, 
2-3 inches in diameter, roughened on both sides, (at least in dry specimens,} with little elevated 
dots or papilliB, and the upper surface somewhat floeculose-pubescent. Panicle naked or with 
only a pair of small leaves at the base of the lowest branches. Flowers somewhat fasciculate 
toward the summit of the brancblets. Perianth with the free portion of the tube nearly an inch 
long, the limb ovate but scarcely expanded in any of our specimens ; the adherent portion of 
the tube expanded at the summit into an annulate narrow wing. Frnit about 2^ lines long, 
turbinate, crowned with a conical summit. This is evidently allied to the last species, and is a 
very remarkable plant. 

BoBRHAAViA GiBBOSA, Pavon. ; Gray, I. c. p. 323. Tinantia gypsophiloides. Mart, d Gal.; 
Ohoisy, I. c. p. 457, Borders of the Eio Grande, from El Paso to the mouth of the Pecos, and 
south-westward, April — October. 

My friend Dr. Gray, who has lately revised the North American genera of Nyctaginaceas and 
the species of Mirabilis and OxybaphuSj has furnished me with the following conspectus. 

J. T, 

\. MEABILE^, Involncrum calyciibrme, gamophyllum, 1-12-florum. Stigma capitatum, 
granulatum. 

* Anthocarpium symmetricum, apterum, Involucrum 5-fidum. 

Mirabilis, Linn. Anthocarpium lajve, baud angulatum, ecoetatum aut vix costatum, ovoi- 
deum. Involaerum herbaceum, post anthesin vix mutatum. Stamina srepissime 5. 

OxYBAPHUS, L'Her. Anthocarpium 5-costatum, obovatum vel clavatum, costis validis, In- 
volucrum post anthesin auctum, rotato-explanatum, scariosuni, reticulatum. Stamina s^pis- 
eime 3. 

** Anthocarpium Imve, hinc excavatimi, marginibits alajformibus rigidis plerumq^ue dentatis 



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BOTANY, 173 

inflexia, in centro linea dupliui tuTjerculorum. Involucrum tvipartitnm, triflorum, fructiferum 
haud scarioro-explanatiim, 

Alliohia, Linn, pro parte, Chois. (This genus should: by right, have borne the name of 
Wedelia, La^/l., and Oxybaphus that of Allionia, icp/.) Although the number of parts in the 
involucre may well be more important than the number of flowers it incloses as Choisy remarks, 
yet the principal character of Allionia is in the fruit. 

2. ABRONIE^. Involucrum polyphyllum, perfectum, e bracteis discretis 5-15, capitulam 
multiflorum fulcrans. Stigma capitatum vel lineari-clavatum. 

Ntctasinia, Choisy. Perigonium tubuloso-infundibuliforme, lobis integris, Genitalia ionge 
exserta, Anthocarpium nuciforme Mirabilis, ecoatatum. 

Abronia, Juss, Perigonium hypocraterimorpbum, lobis obcordatis. Genitalia inclusa. An- 
throcarpium perfectum 5-peterum. Embryo abortu raonoeotyledoneus. 

3, ACLElSANTHE,iE. Involucrum imperfecfcum, e bracteolis 2-3 parvis ad flores singulos, 
vel nullum. Stigma Ifeve, peltatum ecu pileiforme. 

Selinocarpus, Gray. Anthocarpium alatum, alis 5 vel abortu 3 aveniis. 

AcLEiSANTHBS, Gray. Anthocarpium et perigonium (Ionge tubulosum) Mirabilis, 

Pentacrophys, Gray. Anthocarpium cylindricum, 5-co8tatum, costia apice glandula Siepiuw 
tumida instruotis. 

BffiRHAAViA, Anthocarpium nunc S-costatum vel angulatum, nunc 10-costatum. Flores 
BEppius paniculati vel racemosi. 

MIRABILIS, Linn. 

% 1. Nyctage, Eoyen. Involucrum uniflorum. Perigonium Ionge tubulosum vel infundibnli- 
fbrme, Flores ampli. 

M. Jalapa & M. LONGiPLORA, Linn., cum variis. 

§ 2, QoAMOCLiDiON, Choisy. Fere prtecedentis, sed involucrum 3-12-florum. 

M. TRIFLOEA, Benth. PI. Hartw. Quamoclidion nyctagineum, Glmsy. 

M. MULTiPLOEA, Oxybaphus multiflorus, Torr. Quamoclidion multiflorum, Torr., etc. 

§ 3. OxYBAPHOiDES. Involucrum 1-3-florum. Perigonium e tubo brevi late infundibuliforme. 
Flores pro genere parvi. 

M. OXYBAPHOIDES. Quamoclidion oxybaphoides, Gray in Sill. Jnur. (ser. 2,) 15, p. 320. In- 
volucrum triflorum, 5-partitum, fructiferum tenui-membranaceura. Stam. 3. 

M. Califoknica, Oxybaphus lasvis, Benth. Bot. Voy. Sulph. p. 44 ? 0. glabrifolius, var. 
crassifolius, Choisy in DC. Prodr. 13, p. 431. 0. glabrifolius, Torr. Bot. Whipp. Pep. p. 131, 
noD Vahl. Aut glabra, aut viscoso-villosa, foliis parvis subcordatis. Involucrum uniflorum, 
5-fidum. Stam. plerumque 5. (This cannot be Oxybaphus ovatus, which is said to have 
"semen obovatum lave/' for it is also said to have the involucrum "'crescentes in membranam 
venoso-reticulatam patentissimam." P. <& F.} 

OXYBAPHUS. 

The two sections founded on the number of the flowers in the involucre are of small value in 
this genus. Betero's No. 495, referred by Choisy to 0. ovatus, and probably (with Calyxhy- 
menia ovata, B. dt P.?) only a form of 0. viscosus, exhibits two if not three flowers in the same 
involucre. No, 511 of Dr. Gregg's Mexicr t Collection is in the same case, and is pretty clearly 
0. viscosus notwithstanding. And I think that Wright's No. 605, with glabrous and papillose- 



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174 XINITED STATES AND MEXICAN BOUNDARY, 

tuberculate fruit, is only a similar state of 0. glabrifolius. The 3-flowered species occasionally 
bear four or five flowers. 

Our species are exceedingly variable, and hard to fix by characters. The tubercles or papillie 
develope rarioiisly in the same species, and tbey also change after wetting, deliquescing more 
or less into mucilage. The earlier flowers of 0, nyctagineus, and probably of other species, 
are apt to fructify precociously. 

I can understand our species only as follows : 

§ 1. Perigonium breve, subcampanulatum seu rotato-infundibuliforme, involucrum paullo 
Buperans. 

* Anthocarpium glabrum secus vel etiam inter costas saapissime tuberculatum. Involucrum 
] -3-flornm . 

0. viscoses et 0. glabrifolios, Mexico. 

0. GLABRIFOLIUS, VaM.'. var. involucro 2-3-flora. Texas, in mountain valleys near the Kio 
Grande, below Et Paso ; No, 605, Wright. 

0. AGGREGATUS, Vahl. Mirabilis aggregata, Cav. Jo. 6, f. 437. Smith's Run, western Texas ; 
No. 1717, Wright. Certainly the plant of Cavanilles, and found north of Mexico by no other 
collector, 

** Anthocarpium pubescens. Involucrum semper 3-5-florum. 

0. HYCTAGrNEUs, Sweet, Allionia nyctaginea, Michx. Fl. 1 , p. 100, Folia omnia (nisi summa 
diminuta) petiolata, basi obtusa vel cordata. Fructus hirsutulus, inter costas nunc leviter 
subreticulato-rugosus, 

Var. a LATiTOLius : usque ad involucrum iere glaber seu glaberrimus ; foliis ovatis cordatisve 
submembranaceis, facie Mirabilia. Allionia nyctaginea, Michx. Wisconsin to Texas and New 
Mexico. No. *li\, Fendler ; 603, Wright; 681, (1847-8,) Undheimcr, &c. This needs to be 
compared with 0. violaceus, a Linn^an species, of which I have no sufficient specimens. 

Var. /9 Cbevantesii : ramulis involucrisque viscoso-pubescentibus seu villosis ; foliis plurisc[ue 
minoribus et crassioribus sEejius obtusis cordatis vel basi subcordatis. 0. Cervantesii, Lag. ex 
Choisy, I. c. New Mexico and Texas to Mexico. No. 912, Gotdter ; 742, Fendler ; 1719 and 
1720, Wright. No. 1719, in part, and 1721, Wright, an intermediate between a and j9. 

Var, X OBLONorEOLliis : foliis ovato-lanceolatis oblongisve crassis basi baud cordatis ; ctet. 
var, ;9, Allionia ovata, Pursh, Fl. 1, p. 97. Oxybaphus floribundus, Choisy, I. c, A mere 
form of the last. No. 604, Wright; 2004, Berlandier, &c. 

Var. e pilostjs: undique viscoso-hirsutus ; ctet. var. ;9 & ;-. Calymenia pilosa, ^utt. Gen. 
1, p. 26. Upper Missouri to New Mexico, No. 1718, Wright; between this and var. /9. Eio 
Mimbres, &c. ; Bigehw. 

0, albidus, Sweet; Choisy, I. c. Allionia albida, Walt. Fl. Car. p. 84, Calymenia albida, 
Nutt. Oxyb. pilosa? Fngehn. & Gray, PI. Lindh. I. o. p. 51, Prreter inflorescentia glabella. 
Folia omnia subsessilia, lanceolata seu oblongo-lanceolata, basi acuta. Fructus magis hirsutus 
quam in 0, nyctagineo, secus vel inter costas muriculatua. North Carolina to Texas, Hooh. 
Fl. Pot. Am. 2, p. 124, 

0, HIRSUTUS, Sweet ; Choisy, I. c. Allionia hirsuta, Pursh, Fl. 2, p. 728. Calymenia hirsuta, 
Nutt. I. e. Saskatchewan to northwestern Texas ; on the Lirapio ; Bigehw, Wright. Subpedalis, 
undique hirsutus. Folia lanceolata, crassa, inferiora breviter petiolata. Fructus 0, nyctaginei. 
'I'he broader-leaved states approach var. s of 0. nyctagineus ; the narrow ones becoming 
glabrale may pass into the next species. 



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OiOTANY, 175 

0. ANGU8TIP0LIUS, Sweet ; Choisy, I. c. (pro parte.) Colymenia angustifolia, Nutt. C. decum- 
bens, Nutt. AUionia linearis, Pursh, I. c. Folia linearia, sEepius elongata, repanda, crassa, 
glaueescentia, cum caule 1-6 pedali glaberrima, Peduneuii et involucra pubescentia. Fructus 
cinereo-pubeseens. Upper Missouri to the Rocky mountains, New Mexico, and Texas, No. 745, 
Fendhr; 606, 607, 1822, Wright. 

§ 2. Perigonium angustius infundibnliforme, involucre quadruple longiua. Anthocarpimn 
clavato-oblongum, apiculatum, pubescens, inter costas validas profunde sulcatum. 

0. cocxjiHEus, Torr. tned. Species babitu prfecedentis, floribus et fructu distinctissiinuiii. 
New Mexico. 

P0LYG0NACE7E. 

Eriogonum hiebacifolium, Benth. in DC. Prodr. 14, pars 1, p. 6. Hillsides, along the caiions 
of Rio Grande, above tbe mouth of the Pecos ; Parry. Western Texas, near the Eio Grande ; 
Wright, No, 616. A well-marked species, but allied to E. alatum, from which it is easily 
distinguished by the achenium being winged only above the middle, and not at all below. It 
is commonly about a foot and a half or two feet high. The sepals are nearly equal, and vary 
from yellowish to rose color. Pedicels articulated close to the flower. Bracteoles linear, 
glabrous. Embyro excentric and a little curved. 

Eriogonum alatum, Torr. in Sitgreave Hep. p. 168, (. 8 ; Benth. I. c. Hills near the Copper 
Mines, New Mexico; also near Cruces, June— July ; Bigehw, Thurher, (No, 225.) Some of the 
specimeoa are more than 'bur feet high, 

Eriogonum ciliatum {Torr.; Benih. I. c): herbaceum, perenne ; caule nudo tereti glabro 
parce dichotomo-raraoso ; foliis radicalibus obovatis obtusis cum acuraine brevissimo basi in ye- 
tiolum attenuatis supra glabris, subtus pilosiusculia margine ciliatis ; pedunculis elongatis ; in- 
volucria campanulatis 5-Mis ; perigoniis subcoriacets semisexfidis, laciniis ovatis erectis, interi- 
oribus paullo longioribus angustioribusque ; achenio triquetro perigonio fmctifero subaquali. 
Sandy soil near Buena Vista, Cohahuila, July ; Dr. Edwards. Near Monterey, in the same 
State ; Gregg, Eoot perennial ; leaves in a subradical cluster from a short divided candex, 1^ to 
2\ inches long (including the petiole) and six to ten lines wide. Stems, several from one root, 
12-15 inches high, slender, two to three timea forked, the terminal divisions bearing a solitary 
involucre which is about two lines in diameter. Flowers very numerous, the pedicels jointed 
close to the flower. Bracteoles narrowly linear, fringed with long hairs. Perianth purple, 
of a coriaceous (or probably, in tbe living plant, of a fleshy) texture ; the segments extending 
scarcely below the middle, rather obtuse ; the entire base showing six obtuse ridges. Stamens 
included, six of them alternating with the segments, the other three opposite the inner segments 
and inserted considerably lower down ; filamenta smooth. Ovary triangular ; styles very short. 
Achenium enclosed in the connivent perianth, triquetrous, smooth. Embryo incurved, excentric. 
On high plains near San Juan de la Vagueria, Dr. Gregg found an Eriogonum that seems to 
be a variety of this species, but it differs in the following characters : var. foliosum : caule 
scabriusculo 2-3-chotome raraoso, axillis foliosis. Plant about a foot high, more branched than 
the preceding ; the radical leaves smaller, less ciliate, and of a somewhat fleshy texture. Cauline 
leaves about three quarters of an inch long; smooth. Peduncles one to one and a half inch 
long. Sepals united to the middle, closing around the fruit. 

Eriogosum LONGiPOLiUM, ,^«W. I'w JVans. Amer. Phil. Soc. (n. ser.) 5, p. 164; Benlh. I. c. 
Mountains and plains near Live Oak Creek, September ; Bigehw. 



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176 



UNITED RTATKS AND MEXICAN BOHNDARY. 



Eriogoxcm Jambsii, Bentli. I. c. Hill sides and arroyas on the upper Rio Grande and its 
tributaries. 

Ekiogonum FAsoicuLATUM, Bentk. in lAnn. Trans, 17, p. 411, <& in DC. Frodr. I. c. Near 
San Felipe, etc., California ; Parry, Schott. 

Ekiogonum polifolium, Benth. in DC. Prodr. I. c. Sandy hills, San Felipe ; T'hurb^r, (N'o. 
587,) and near San Diego, California ; Parry. Dr. Andrews found it also at Monterey. On 
the lower Gila ; Schott. This species forma bushy tufts one to two feet in diameter. 

Eriogonum Wrightii, Torr.; Berdk. I c. p. 15. Hill sides. Copper Mines, and along the Rio 
Grande from Albucfuerque to the great canona ; frequent. Dry plains, Loa Playas, Sonora, 
June ; Thnrh&r. Var. helianthejupoliom. E. helianthemi folium, Benth. I. c Pine mountains 
east of San Luis Eey, California ; Parry. 

Eriogonum virgatum, Benlh. in DC. Prodr. I. c. p. IG. Grassy places near San Luia Rey, 
California ; Parry. This agrees very well with the original specimens of Fremont, named by 
Bentham. 

Eriosoxu-M gkacilb, Benlh. Bot. SuJph. p. 46. Sandy ravines, Sonora, September ; Thurher. 
Eriogonum acbtosblloides, Torr.; Benth. in DC. Prodr. I. c. p. 16 ?. Near Santa Barbara, 
California, August ; Parry, The flowers are smaller and on longer pedicels than in specimens 
collected in the United States Exploring Expedition, 

Emogondm viminbum, Dougl.; Benlh. in Trans. Lin. Hoc. Vl,p. 416. Sandy hills, San Felipe, 
California, May ; Thurher. 

Eeiogonum multiflorum, Benth. I. c. Western Texas, along the lower Eio Grande to its 
mouth, 

Eriogonum ANNUUM, Nutt. I. c; Benth. in DC. Prodr. I. c.p. 19. E. cymosum, Benth. I. c. 
Alluvions of the Gibolo, a tributary of the Rio Grande, and rocky places, Howard's Springs, 
August — September ; Bigelow. 

Eriogonum tbnbllum, Torr. in Ann. Lye. Neiu York, 2, p. 241 ; Benth. I. c. Mountains 
below San Elceario, and at the month of the Great Cafion of the Eio Grande ; Bigelow, Parry ; 
also on the San Pedro, western Texas. (Nos. 619 and 1767, Wright.) Some of our specimens 
are two feet high. 

Var. ^ PLATYPHYiiCM. E, platyphyllum, Torr. ; Benth. I. c. On the Eio Grande, western 
Texas. (Nos. 618 and 1768, Wright.) Intermediate forms show a gradual transition from this 
variety to E. tenellura. 

Eriogonum XRroiiopoDUM, Torr.; Benth. I. c. Dry ravines and rocky banks, along the Rio 

Grande from El Paso to the Great Canon, and west to the Colorado of California. The leaves 

are all radical, orbicular, or roundish- ovate, cordate, on petioles much longer than the lamina. 

Eriogonum corwatum, Torr.; Benth. I. c. Near San Felipe, on the borders of the California 

desert ; Parry. 

Eriogonum Thurberi (n. sp.}: annuum, humik, arachnoideo-lanosnm ; foliis subradicalibus 
longe petiolatis late ovatis obtusis subcordatis rugosis, margine subundulatis, subtus incano- 
tomentosis ; caule auperne divaricato 2-3-chotomo ; peduncnlis elongatis capiJlaribus ; involucria 
late campanulatis 5-6-fidis paucifloria ; perigoniis glabris profunde 6-fidis, laciniis exterioribus 
superne reniformi-dilatatis medio constrictis; interioribns oblongo-subpanduriformibua. Sandy 
ravines, San Pasqual, California, May ; Thurher. I have seen specimens of this plant collected 
in California by Mr. "Wallace. Leaves in a subradicai cluster, about half an inch long undulate- 
rugose, pubescent above, wbite-tomentose underneath. Stem a scape about a span high tricho- 



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BOTANV. 177 

tomou8ly subdivided below the mitidle, witli ovate acute teriiate bracts at the forbs. Pedicels 
an inch long. Involucre less than a line in diameter, cleft nearly to the middle into six rather 
obtuse lobes ; exterior segments of the perianth nearly four times broader than the inner. 
Filaments and ovary smooth. Styles short. Achenium smooth. Embryo strongly curved. No 
bracteoles were detected; in their place are only woolly hairs. Resembles E. rottmdifolium in 
the flowers; but that species has numeous stems, which branch near the root, even leaves; mucli 
shorter stout peduncles, and manifest bracteoles. 

Erioqosum eotundifolium, Benih. I. c. Rocky ravines along the Rio Grande from El Paso 
to Santa Barbara, and west to Santa Maria, Cohahuila, April— June. (No. 1765, Wright.) 

Eriogoniim cernuum, Nwlt. PI. Oamb. in Jour. Acad. Sc. Phil. n. ser. 1, p. 162 ; Benth. I. c. 
On the Gila ; Schott. 

Eriogonum Abbrtianum, Torr. in Emory's Rep. p. 151 ; Bentk. L c. Sandy soils, valley of the 
upper Rio Grande ; westward along the Gila, and in Ohihuahna. Variable in height and 
breadth of leaves, but always easily recognized. (Nos. 620, 621,622, 1761,1762,1763, Wright.) 

Eriogonum pharnaceoides, Torr. in Sitgreave's Rep. p. 1 67, i. 11 ; Berdh. I. a. Hills near the 
Copper Mines ; Bigdow. Near Janos, Chihuahua ; Thurher. 

OHORiZANTirE ANGUSTiFOLiA, Nutt. I. c; Benth. I. 0. Near Monterey, California, on the sandy 
beach. May ; Parry. 

Chorizanthe diffusa, Benth. PI. Hartio. p. 333, <fe in DO. Prodr. I. c. With the last ; 
Parry. 

Chobizantue PROCUMBENS, Nutt. I. c; Bentk. I. c. San Diego, California, May; Thurher. 

Chorizanthe brbvicornu (n. sp.); annua ; foliis radicalibns anguste-spathulatis hirsutis ; 
caulibus subnudis erectis 2-3-chotorae ramosis ; cymis laxe corymboso-paniculatis ; involucris 
glabriusculis anguste tubulosis, dentibus 8ub£ec[ualibus subulato-aristatis recnrvis tubo triplo- 
brevioribus, perigonii laciniis integris acutiusculis fequalibus. On the Gila River, March; 
Parry,; also collected by Colonel Fremont on the same river. Plant 1-4 inches high. 
Leaves scarcely a line wide, rather acute. Bracts subulate. Involucre about 3 lines 
long, a little curved, the teeth scarcely uncinate. Stamens only 3 in all the specimens examined. 
Near C. staticoides, but with a much looser inflorescence, shorter involucral teeth, eq^ual perianth- 
segments and only 3 stamens. 

Chorizanthe FiiimtUTA, Nu.U. I. c; Benth. I. c. Torr. in Pacif. R. Road Expl. 6, p. 362, t. 8. 
"Dry hills around San Diego, California, in such profusion as to give them a red appearance ;" 
Thurber. 

Acanthogonum BifiiDUM, Torr. in Bot. Whippl. Rep. p. 133, &. in Bot. Parke's Rep. t. 8. 
Desert west of the Colorado, California, March; Schott. 

MucRONEA Californioa, Benth. in Linn. Trans. 17, p. 419, t. 20, d in DC. I. c. p. 27. Dry 
hills near San Diego, California ; Parry. In our specimens the involucres are all 3-4-toothed. 

Centrostbgia Thurberi, Gray, in DC. Prodr. I. c. p. 27 ; Torr. in Bot. Parke's Rep. 1,p. 19, 
t. 8. Sandy hills near San Felipe, California, May ; Thurher, AntiseU. 

Pterostegia drymartoides, Fisoh. & Mey. Ind. 2, Sem. Hort. Petrop. p. 48 ; Benih. I. c. San 
Pasc[ual, and Napa, California, May ; Thurber. Mr. Thurber's specimens from Napa resemble 
those collected by Dr. Bigelow near San Gabriel, in which the leaves are 2-cleft with variou.'-.ly 
cut segments, 

Rdmex hymenosbpalus (n. sp.): glaberrimus ; foliis ovato-lanceolatis basi angustatis margine 
snbundulatis ; panicula aphylla, racemis elongatis erectis, verticillis approximatis multifloris ; 
23 k 



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178 UNITED STATES AND MEXICAN BOUNDARY. 

pedicellis capillaribns valvas (equantibus ; valvis lato-cordatis membranaceis integerrimis 
ecallosis. Sandy soils from El Paso to tbe canons of the Eio Grande ; March— April. Root 
white. Stem 2-3 feet high. "Foliage intensely bitter ;" Thurber. Lower leaves a foot or 
more long and 2-3 inches wide, somewhat undulate on the margin ; upper ones nearly flat. 
Panicle a foot long ; the flowers crowded. Inner sepals of the fructiferous calyx nearly half an 
inch long, roundish -ovate, strongly cordate, of a very thin texture, often rose-eolored, slightly 
reticulate-veined, twice as long as the achenium. "We cannot refer Rumex to any described 
species. It is nearest R. venosus, but that is a smaller plant, the leaves with a much longer 
and more attenuated hjise, the panicle lax, and with but few flowers in whorls, and the valves 
are a great deal larger, as well as broader in proportion. 

RtTMEx SAUciFOLius, Wtinm. in Flora, 1821, ex Mfdsn. in DC. Prodr. ~iA,pars l,j). 47. Banks 
of the Kio Grande near Frontera, Texas ; April. (No. 1780 and 1781, Wi-iyht.) 

Var, DEHTicuiATius : valvulis lato-deltoidcis denticulato-serrulatis vix callosis. Near San 
Diego, California ; Thurher. Probably a distinct species. 

EuMEx MAEiTiMUS, Linn. ; Meisn. I. c. p. 59. Moist sandy places near San Luis Eey, Calfornia > 
Parry. 

PoLYQOBTiM AViCTTLARE, Linn. Sp. p. 519 ; Meisn. I. c. p. 97. Western Texas ; Wright, No. 
1774 and 1775 ; the latter a tall erect slender form with narrowly lanceolate leaves. 

PoLTGOSiJJi Paronychia, CTiam. db ScMecht. in Linn<Ea, 3, p. 51. Meisn. I. c. p. 89. Near 
Monterey, California ; on the sea beach, April ; Parry. San Francisco, March ; Thurber. 

Polygonum camporum, j- boreale, Meisn. in Mart. Fl. Bras. fasc. 14, Polyg. /». 22 ; d in 
DO. Prodr. 14, pars 1, p. 87. Dry bed of the Sea Willow, Texas, August ; Sigelow. Mouth 
of Los Moros ; Svhott. (No. 614, Wrighi.) Stems 3-4 feet long, simple below, apparently 
arising from a creeping rhizoma, the branches elongated, terete, terminating in long slender 
interrupted spikes ; bracts 2-4-flowered, the lower ones remote and sometimes with small 
oblong leaves in the axils, the upper somewhat approximated. Flowers on exserted pedicels. 
Perianth pale rose color or white, not punctate. Aehenium trlijuetrous. — Allied to P. scoparium 
of Corsica. 

POLYOONDM TBNUB, Michx. FL 1, p. 238 ; Torr. Fl. N. York, 2, p. 153. Hill sides, Santa 
Eita del Cobra, Aug.; Btgeloto. (No. 1776, Wright.) 

Polygonum acre, R. B. K.; Meisn. I. c. p. 107. P. hydropiperoides, Pursk, non Michx 
Between El Paso and Dona Ana, on the Rio Grande, April ; also on the Mimbres ; Bigelow 
(No. 1777, Wright.) 

Polygonum hydropiperoides, Michx. Fl. 1, p. 239 ; Meisn. I. c. p. 103. Brady's Creek, 
western Texas, October ; Thurber. 

Polygonum nodosum, Pers. var. incarnatum. Gray, Bot. N. States, ed. 2,^. 372, P. incarnatum. 
Ell. With the last. Wet ravines below San Elccario on the Rio Grande; Bigelaw. Western 
Texas ; Thurber. 

Polygonum Pennsylvanicum, Linn. Sp. 1, ^.519; Meisn. I. c. Low grounds near San Elceario 
Texas ; Bigelow. Sonora ; Thurber, C'apt. E. K. Smith. 

Polygonum Pbksicaria, Linn.; Meisn, I. c. Wet places ; Valley of the Limpio, etc. 

Polygonum amphibium, Linn.; Meisn. I. c. Var. tekbestee, Presidio del Norte; Bigeloiv 
(a nearly glabrous form.) Santa Cruz river, Sonora ; Capt. E. K. Smith, (No. 1779, Wright. 



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BASELLACEiE. 

Anredbra scandens, Moq. in DO. Prodr. 13, pars 2, p. 230. Easella veeicaria, Lam. Diet 1, 
p. 382. Alluvions of the lower Rio Grande, below Roma, September— October ; Sckolf. A 
very common vine in the thorny " cbapparal," twining profusely on every fence and hedge near 
Corpus Christi ; Br. Edwards. 

AMAKANTACE.l]:. 

AoANTirocnrTOxY WEiOHTir, Torr. J'.ot. Sitgr. Rep. p. 170, t. 13. Plains among the Burro 
mountains, September ; Bigthw. Los Medanos, Chihuahua, August ; Tkurher. These specimens 
are very perfect and enable us to amend the character of Acanthochiton given in the work here 
qnoted. There are three somewhat unec[ual bracts to each male flower. The cells of the 
anthers are separate at the summit, and very acute. The female flowers are mostly ternate and 
are subtended by three bracts, the middle one of which is cordate-falciform and usually much 
larger than the lateral ones. 

Cglosia paniculata, Unn. Sp. p. 298 ; Moq. in BC. Prodr. 13, 2, p. 240. Shady woods near 
Eagle Pass, on the Rio Grande ; also on the San Pedro river, western Texas, August— Novem- 
ber ; Bigeloto. (No. 594, Wright.) A common plant in subtropical America. Dr. Edwards 
found it at Corpus Christi, and Mr. Blodgett at Key West. 

Amabastus hybridus, Linn. Sp. p. 1406 ; Moq. I. c. p. 259. On the Bio Grande, and along 
the Gila. (No. 1048, Wright.) Probably not indigenous. 

Amaranths Butcm, Linn. I. c. ; Moq. I. c. Low places, near Camp Bache, July ; Bigelow. 
Introduced from Europe? 

Sarratia BBRLANDiBRr, Moq. I. c. p. 268. Mountains of the Cibola, a tributary of the Rio 
Grande, August ; Bigdotv Our specimens are about 18 inches high, which is three times 
taller than Beriandier's plant, as described by Moquin. 

Sarbatia Berlandibri, var. emarginata : foliis oblongo-lanceolatis ; calycis fojminei lacinis 
lato-cuneatis, emarginatis. Camp Green, October ; Parry. This variety is about a foot high. 
Except in the lacinife of the perianth, it does not appear to differ from the preceding. 

Sarratia Berlandieri, var. dbnticueata : foliis lineari-lanceolatis, calycis foeminei laciniie 
lato-ouneatis margine eroso-denticulatis. Santa Cruz, Sonora, September ; Thurber. 

Sarratia Bbrlandieri, var. eimbriata : foliis linearibus ; glomerulis subglobosis densifioris, 
inferioribus axillaribus superioribus approximatis eubspicatis ; calycis fojminei laciniis iequalibus 
flabellato-euneiformibusapicedeEtato-fimbriatis. On the Gila river ; Schoti. (No. 582, Wright.) 
Stem 2 feet or more in length, smooth, branching ; the branches erect. Leaves 1^-2^ inches 
long, 1^-2 lines wide, smooth, tapering at the base. Glomerules of flowers about one-third of 
an inch in diameter, the upper ones aggregated in a long naked spike. Bracts subulate. Peri- 
anth parted nearly to the base ; the segments spreading, mostly broader than long, abruptly 
narrowed to a short claw, the summit cut into irregular acute teeth or lacinias. Ovary globose 
ovate ; stigmas 3-4. Utricle tubercular-rugous at the summit. Seed lenticular, acute on the 
margin, smooth, and shining. This appears to be quite a distinct species. 

Amelogynafolygosoides, _Ha/.; J%. ; c.p.21Q. Amarantus polygonoides, Linn. Western 
Texas, (No. 1746, Wright.) We have it also from Dr. Gregg, who collected it at Cerro AUo, 
Mexico. The genus Scleropus, of Schrader, is founded on an abnormal state of this plant, in 
which the peduncles and pedicels have become thickened and indurated. We have it in this 



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180 UNITED STATES AND MEXICAN BOUNDARY. 

state from Key West, coUected by Mr. Elodgett, and from the vicinity of New Orleans, where 
it was found "by Dr. Kiddell. Even Kome of Berlandier's specimens, which Moquin referred to 
Scleropus, are in the ordinary state of AmMogyna polygonoidea, 

MoNTBLiA TAMARiscrsA, Gray, Man. Bot. ed. 2, p. 370. Amarantus tamariscinua, Nuti. hi 
Trans. Amer. Phil. Soc. (w ser.) 5, p. 165. Eavines Eio San Pedro, western Texas, Septem- 
ber ; Bigelouf, who collected only the male plant ; while Wright (under No. 1T47) has both sexes. 

G-uiLiEMiNBA DBNSA, Moq. I. c. p. 338. Plains between the Limpio and the Eio Grande ; also 
near the Copper Mines, July — August ; Bigelow. Sonora ; Thurher. On the banks of the 
Colorado, California ; Schott. (Noa. 584, 585, and 1755, Wright.) Mr. Thurber's plant exactly 
accords with the description of Moijuin, 1. c. ; but our specimens from the other collections have 
broader leaves. 

GossiPiANTHUS RiGiDiFLORTiS, Hooh. lo. PI. 3, (. 251 ; Moq. I. c. p. 337. Western Texas. 
{IVright, Nos. 586 and 1754,) This plant occurs only in the collections of Mr. Wright. It is 
certainly the same as Dnimraond's, on which the species was founded. We have no original 
specimens of G. tenuiflorus for comparison, but we believe that it is not distinct from G. rigidiilorus. 
In our Drcmmondian specimens of the latter, the plant is in fruit and the stamens are withered. 
In the more complete ones of Mr. Wright the filaments are ovate-lanceolate, as they are described 
in G. tenuiflorus ; and in both they are connate at the base. The relative length of the bracts 
and calyx depends on the age of the flower. 

Irisinb vermicularis, Moq. I. o. p. 340. Illecebrum vermiculatum, Linn. Lower Eio Grande, 
in alluvial soils, October, Schott. 

Iresine diffusa, Humb. & Bonpl. in Willd. Sp. 4, p. 765 ; Moq. I, c. p. 345. Var. foliis ovato- 
oblongis; spiculis oblongis ; calyce bracteis subduplo longiore'; staminodjis subulatis staminibus 
alternantibus et triplo-brevioribus. Sonora and Chihuahua ; Thurher. San Estaban, Septem- 
ber ; Bigeloio. On the Eio Grande, near the Great Caiion ; Parry. Perhaps not distinct from 
I celosioides, to which, indeed, some other species of the section Iresinastrum might be referred ; 
but we have not found starainodia in any other of this group. 

All our specimens are female. No. 589, Wright, is the male plant, in which there are small 
subulate staminodia between the filaments ; thus resembling Ireneis, of Moquin, a genus scarcely 
distinct from Iresine. 

Alternantiiera Achyrantha, p. Br. Prodr. p. 417 ; Moq. I. c. p. 358. Achyranthes repens, 
Linn. ; Ell. Sh. 1, p. 309. Banks of the ilio Pecos ; Schott. Bachimba, Chihuahua ; Thurher. 
Matamoras ; Gregg. Moquin refers Elliott's plant to Telanthera polygonoides, hut it certainly 
belongs here. 

Altbrnanthbra LANUGmosA, TorT. in Emory Pep. p. 150 ; Moq. I. c. p. 359, (pio parte.) 
Achyranthes lanuginosa, Nutt. in, Amer. Phil. Trans, [n. ser.) 5, p. 166. Common in New 
Mexico and Sonora, flowering through the summer, (Noa. 591 and 1756, Wright; Nos. 726 
and 727, Fendler; Nos. 835 and 2255, Berlandier.) In Emory's Eeport I noticed a remarkable 
character in the specimens examined. The flowers become imbedded in the branches on which 
they grow, so that when in fruit they are partly or wholly concealed ; on which account I pro- 
posed to call it Endotheca. This character is, however, not constant, or is only seen in old 
specimens. Sometimes the short branches, with the cluster of flowers at the summit subtended 
by two or three leaves, will assume the appearance of a pedunculate head, furnished with an 
involucre. The peduncle becomes thickened upward, as does likewise the confluent bases of the 
leaves, involving more or less the flowers. In the young state the plant is densely woolly with 



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BOTANY. 181 

verticillate haira, but is nearly smooth later in the season. The staminodia are merely obtuse 
lobes between the filaments, or are wanting altogether. According to Mr. Schott the Mexicans 
use a decoction of this plant as tea, 

ALTEBNANTHEiiA?sirFFRUTicosA(n.5p,): cincreo-pubescens; caule suEFruticosaerectoPramosissirao; 
foliia inferioribus ovatia breviter petiolafcis, superioribus verticillatia subternatis suborbieulatis 
eessilibna ; glomerulis paucifloris axillaribus sessilibus ; sepalis oblongo-lanceolatis versua apicem 
pilosis bracteis duplo longioribua. Mountains near Frontera and between the Pecos and the 
Limpio ; Wright, No, 592 and 1T57. This species is truly suffruticose ; the stems (which seem to 
grow erect,) arise from a thick irregular woody base. The A, lanuginosa is always annual and 
diffuse ; the leaves are larger, with along abruptly attenuated base, and the glomerules are fewer 
flowered. 

GoMPHRENA TUBERiFEitA (n. sp.:) parce pilosa ; radice tuberosa ; caule erecto ramoso herbaceo ; 
foliis lanceolato-linearibus sesailibus integerrimia mucronulatis cinereis ; pedunculis elongatis 
simplicibua ; capitulis globosis vel ovatis soiitariis plerumque diphyllia ; floribus nitidulis albo- 
roseis ; calyce bracteis lateralibus suhaquali ; sepalis acutissiinis uninerviis villosissimis. Kocky 
banks of the San Pedro and other tributaries of the Rio Grande, Western Texas and in New 
Mexico. (Nos. 593 and 1750, Wright.) Boot fusiform, ]|-2 inches long and about one-third of 
an inch in diameter above, fleshy and farinaceous ; stem 1-2 feet high, sparingly branched. 

GoMPHRENA DECUMBENS, Jucq ; Moq. I. c. p. 410. Lower Hio Grande, October ; Schott. This 
agrees very well with apecimena from Havana, named by Moquin. 

GoMPHKENA GLOBOSA : var. ALBiFLORA, Mcq. I. c. On the Cibola and other tributaries of the 
liio Grande ; Bigdow, Schott. Santa Cruz and Babocomori, Sonora, September ; Tkurher. (No. 
1751, Wright.) 

GoMPHRENA SoNOEs (n. Sp.:) caulibus e basi lignosa ortis pilosis ; foliis lanceolatis sessilibus 
pilosis pallide viridibus ; capitulis terrainalibus et lateralibus ovatis simplicibus vel 2-3 confiu- 
entibus 2-4-phyllis ; floribus flavescenti-vel carneo-albidis ; bracteis lateralibus dorso sureum 
angusto-cristatis calyce paullo longioribus, sepalis acutissimis uninerviis villosissimis ; stylo 
ovario longitudine apice bifido. Mountains near Santa Cruz, Sonora, Mexico, September ; 
Wright, (No. 1749,) Thurher. Stems simple or sparingly branched, slender, 1-2 feet high, 
sparingly clothed with appreseed hairs. Leaves 1-1^ inch long, 3-5 lines wide, acute, the 
lower ones narrowed at the base. Axillary heads simple, sessile, about one third of an inch in 
diameter ; terminal heads mostly composed of two or three closely aggregated smaller heads. 
Lateral bracts about one-fifth longer than the calyx, with a narrow serrated crest above the 
middle. Stamineal tube entire to the summit; antheriferous lobes very minute; the lateral ones 
liguliform, much shorter than the anthers. Style about as long as the ovary; stigmas cylindrical, 
acute, half as long as the style. This species occurs only in the collections of Wright and Thur- 
ber, and does not appear to have been hitherto described. It seems to be allied to G. agrestis, 
Mart. 

GoMPiiRESA c^spiTOSA (u. sp.:) humilia ; caulibua c£espitosis ; caudice lignoso ; foliis obovatis 
obtusis subsericeo-villosia, radicalibus basi attenuatia, caulinis binis subsessilibus ; pedunculis 
brevibus simplicibus ; capitulis terminalibus soiitariis ovatis ; floribus nitidis flavescenti-albis ; 
calyce bracteis ecristulatis paullo longiore ; sepalis obtusiusculis uninerviis villosissimis. Grav- 
elly plains near the Organ mountains, IJew Mexico ; also at the Copper Mines and near Mimbres, 
April— May ; Bigelow, Wright, (No. 1572.) Cook's Springs, New Mexico ; Thurher. Rio de 
Santa Cruz, &c,, Sonora ; Schott, Gapt. E. K. Smith .No, 1753, Wright, is a glabrescent state 
of this species. Stem or rather oaudex 1-2 inches long, thick and somewhat ligneous, throwing 



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182 UNITED STATES AND MEXICAN BOUNDARY. 

up a tuft of spreading or decumbent branches, which are 1^-4 inches long, and, when young, 
are densely clothed with a whitish pubescence. Eadical leaves an inch or more in length, exclu- 
sive of the petiole, which is about an inch long ; in the young state pubescent, with almost 
silky white hairs, but finally smootbish ; cauline leaves similar, but with very short petioles, or 
nearly sessile. Heads about three-fourths of an inch long. Bracts very acute, thin and hyaline, 
entirely without a keel. Sepals somewhat rigid, extremely villous. Filaments united nearly 
to the summit ; the lateral processes often reduced to small teeth, or sometimes almost wanting. 
Style deeply bifid. 

Fr<eijchia Floridana, Moq. I. c. p. 420. Oplotheca Floridana, Nuti. Gen. p. 79 ; Bart. Fl. 
N. Amer. t. 59. On the Limpio and near Van Horn's Wells ; Bigehiv. Presidio del Norte ; 
Fairy. May — July. 

Frcelioiiia Dbummosdii, Mbq. I. c. Eio Coleto and near El Paso ; Tkurber. Sandy beach of 
the lower Kio Grande, April ; SchoU. Too near the preceding species, which, again, seems to 
be scarcely distinct from F. interrupta. 

Fewlichia uracilis, Moq. I. c. Oplotheca gracilis. Hook. la. mb t. 256. Alluvions of the 
Bio Grande and at the Copper Mines, August— October ; Bigelow. On the Guadalupe river, 
Texas ; Scliott. Chihuahua and Sonora ; Thurber. A smaller species than the two preceding. 

CHENOPODIACEiE. 

Tbloxys cornuta, Torr. Bot. Whippl. Exped. p. 129. Hills and rocky places near Santa Rita 
del Cobra, October, (in fruit ;) Bigelow. Some of the specimens are nearly two feet high. 

Chenopodium AIJ3IIM, Linn ; Moq. I. c.p. 71. Dona Ana, New Mexico, Sonora and Chihua- 
hua, April— July ; Thurher. (Nos. 1731 and 1732, WHght.) 

Chenopodium ahthelminticum, Linn.; Moq. in DC. Prodr. 13, pars 2, p. 73. Various places 
New Mexico and western Texas ; probably introduced. 

Blitum Bonos- Herricus, Meick.; Moq. in DC. I. c. p. 68. In fertile grassy places near San 
Luis Eey ; Parry ; and near San Diego, California ; Thurber. Doubtless introduced from 
Europe. 

Obionkcanescbns, Moq. in DC. Frcdr. 13, pars 2, p. 212. Abundant at the foot of San Diego 
Bay, California ; Parry, It forms dense thickets, 3-5 feet high. 

Obione iiymenelytra {Torr. in Bot. Whippl. Eci^ed.p.l2'i,t.2i)): caulefruticoso raraosissimo, 
ramis incrmibus teretibus ; foliis subdeltoideo-orbicnlatie vel basi truncatis grosse acuteque den- 
tatis dense lepidoto-incanis ; florlbus dioicis ■; bracteis reniformi-orbiciilatis membranaceis integer- 
rimis basi coalitis, disco nudo. Desert of the Colorado and on the Loner Gila, in saline soils ; 
Schott. A shrub apparently 2-3 feet high, the branches very crooked and interlaced. Leaves 
l_]i inch in diameter, the margin cut into coarse, more or less acute salient teeth. Maleflowerg 
in dense gloraerules, which are collected into axillary and terminal paniculate spikes. Fructi- 
ferous bracts more than one- third of an inch in diameter, retieulately veined, only united at the 
base, the short pedicel tumid and spongy. 

Obionb argbntea, Moq. Chenop. 76, <& in DC. Prodr. I. c. p. 115. Atriplex argentea, 
Nutt. Gen. 1, p. 198. Valley of the Pecos, September ; Bigelow. Annual ; stem much branched 
and at length diffuse, the branches angular and flexuous, nearly smooth. Leaves triangular or 
somewhat deltoid, subsessile, often nearly entire but usually more or less toothed, membrana- 
ceous. Male flowers in glomerated interrupted terminal spikes ; female flowers in sessile axillary 



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BOTANY. 183 

clusters. Fructiferous bracts pedicellate, suborbicnlar, tbe margin acutely and often irregularly 
tootbed, disk naked, or aometimea cristate with foliaceous appendages, 

Obione CONFER! ifolia, Tott. tfe Frem. in Frem. 2d Sep. p. 318. Mountains near Lagnna de 
Santa Maria, Chihuahua, April ; Bigelow. Only the male plant was collected. 

OmosE RADiATA (h. 8p.) : caule erecto? berbaceo ramoeo, ramis inermibus ; foliis obovato- 
oblongia obtusiasimis mucronulatis membranaceis integerrimis vel obsolete repando-dentatis basi 
attenuatis utrinque lepidotis canescentibus ; glomerulis ftemineia axillaribus ; bracteis sessilibus 
orbiculatis infra mediam coalitis margine radiatim denticulatis, disco inappendiculato carinulato. 
Alluvions of the Gila, Sonora, May ; Schoti. Stem apparently annual and about a span long ; 
tbe branches flexuous. Leaves 8-12 lines long and 3-5 lines broad. Male flowers in small 
terminal spikes ; female flowers in small axillary clusters. Fructiferous bracts almost exactly 
orbicular, very flat, 1^ line in diameter, neatly cut around the margin into very short acute 
teeth, the disk marked with a central, longitudinal, slightly prominent keel. We cannot 
identify this plant with any of the species of Obione described by Moquin ; it is most nearly 
related to the following : 

Obiosb elegans, Moq. I. c. p. 113, var. ? radiata. Kio Sta, Murin, Chihuahua, August ; 
Tkurber. "Western Texas, (No. 571 and 1T43.) We are not confident as to our determination 
of this plant. Our specimens are certainly annual ; the leaves are rather obtuse than acute ; 
the fructiferous bracts are scarcely pedicellate and they are united to the middle. The margin 
is cut into strong acute radiating teeth. 

Obione ELEGANS, var. ? tueerculosa : foliis repando-denticulatis; bracteis orbiculatia, margine 
dentatis, disco tumido cartilagineo medio tuberculoso-dentatis. Western Texas; Wright. Plant 
about a foot high, apparently annual. Differs from tbe last, chiefly in the tumid fructiferous 
bracts, the disks of which, on each side of the median line, are furnished with 2-3 acute 
tubercles. 

Obione acasthocarpa (n. sp.) : caule suffructlcoso erecto raraoso, ramis subteretibus iner- 
mibus ; foliis deltoideo-lanceolatis spatbulatisve integris vel repando-dentatis densisaime lepidotis 
incanis floribus dioicis ; glomerulis interrupte spicatis, spieia masculis paniculatis terminalibus; 
bracteis demum ultra medium in thecam sessilera snbglobosam subcartilagineam undique 
epinosam coalitis. Plains between the Burro mountains; September, Bigelow, (in fruit.) On 
the Eio Grande, below Presidio del Norte ; Parry. Near the Piloncilla, Sonora, September; 
Thurher. (No. 1T39 ; Wright. His No. 173T seems to be a slender form of tbe same.) Plant 
1-2 feet high, much branching from the ground. Leaves somewhat persistent, about an inch 
long, often somewhat hastate at the base, usually aomewhat repand-dentate or denticulate. 
Fertile flowers glomerate in the upper axils, formingakindof leafy panicle. Male spikes panicu- 
late, nearly naked. Fructiferous bracta indurated, covered with long flat or compressed rigid 
processes which resemble spines. Near Fort Yuma, California, Major Thomas collected an 
Obione which appears to be a variety of this species. It sometimes attains the height of (5-10 
feet. The leaves are deltoid-ovate, very obtuse and somewhat undulate. Only the male plant 
was found. It is the same as 0. Barclayana of Durand and Hilgard'a Report of Williamson's 
Expedition, but apparently not of Bentham. 

Obione canbscenb, Moq. in DO. Prodr. 13, pars 2, p. 212. Abundant atthe foot of San Diego 
Bay, California ; Parrp. Valley of the Rio Grande, from El Paso to Eagle Pass ; also on the 
Gila. (No. 1740 and 1741, Wright.) A variety with smaller, ovate or obovate leaves was 
found on the Burro mounfaina by J)r Bigeloio ; and on the Gila by Mr. 'Ihurbcr. It is the same 



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184 UNITED STATES AND MEXICAN BOUNDARY. 

as Wright's No. 1738, and Borlandier's No. li>46 ; the latter from San Luis Potosi. Gresg 
found it also at Cerros Bravoa, Mexico. 

Obiose occiDESTAtis, Moq. I. c. Near the Copper Mines and at Santa Barbara ; also on the 
San Pedro ; Bigelow. On the Pecos and in Chihuahua ; Thurher. El Paso ; Wright. Eemark- 
ahle for its large hroadly 4-winged fruit. These wings are either entire or more or less deeply- 
toothed ; rarely cut into narrow lobes. The bracta adhere nearly to the summit, while in 0. 
canescens they are united only toward the base. 

Ob:one occiDENTALrs, var. AKOUSTiPOLiA : foliis angusto-linearibus vel lanceolato-linearibus. 
Valley of the Rio Gfrande, from EI Paso to 40 miles below San Elceario ; Bigelow, Wright. On the 
Gila ; Thurher. (No, 1742, Wright.) Gregg found it in various places in New Mexico, where 
it is called Chanuzo. It seems to be closely related to 0. linifolla, Moq. 

BuBOTiA LANAXA, Moq. Ckenop. p- 81 ; Torr. & GrayinBot. Pope's Rep. p. 124. Diotis lanata; 
Pursh, Fl. 2, p. 602. Hills near the Copper Mines, New Mexico. 

CoarsPERMUM UYfiSOPiFOLiuM, Linn.; Moq. I. c. f. 141. Sandhills, Chihuahua ; Thurher. Alhi- 
viona of the Rio Grande ; Schott, Parry. 

Abtiirocnemum macrostacuydm, a. Bunge in Linncea, 28, p. 573. Arthrocnemum fruticosum, 
;• macrostacbyum ; Moq. Chenop. p. Ill, t& in DO. I. o. p. 151. Salt marslies between Co- 
manches and Leon Springs, November ; Schott. Rio Pecos ; Thurher. Santa Rosa, Cohahuila ; 
Bigelow. Plant 1-2 feet or more in height. (No. 1745, Wright.) According to Bunge Q.. c.) 
MoQuin and Fenzl have not distinguiabed, by reliable characters, Arthrocnemum from Sali- 
cornia. To the former genus be refers those species in which the seed is albuminous, and the 
embryo curved; in the latter those which have exalhuminous seeds and a conduplicate embryo. 

Salicornia mucronata, Lagasca PI. Barill. ex Moq. Chenop. p. 115. On the beach atBrazoa 
Santiago, May ; Schott. This plant is shrubby and apparently as tall as the preceding species ; 
the specimen being only a branch, and more than a foot long, I am now inclined to regard it 
as distinct from S. mucronata of Bigelow, which is a humble annual with thicker spikes, and 
the flowers more deeply immersed in depressions of the rachia. The latter may be called S. 
Bigelovii, 

Su.»iDA maritima, Bumort.; Torr. Fl. New York, 2, p. 141. Saline soils, Leon Springs, Sep- 
tember ; Bigelow. Plant apparently 3-4 teet high. 

SuJEDA FRTiTicosA (ForsJc.) var. ? MULTiFLOBA, Torr. Bot. WUppl. Exp. p. 130. Sandy bills and 
ravinea near Presidio del Norte, August ; Bigelow. Rio Pecos ; Thurher. 

PHYTOLACCACE.E. 

R:viNA L.^vis, Linn.; Moq. I. c. p, 11. R. portulacoidea, Nutt. Trans. Amer. Phil. Soc, n. 
ser. 5 P- 167. Common in alluvions throughout the valley of the Rio Grande and its branches 
below El Paso ; west to Cocospora, Sonora. (No.=!. 1729 and 1730, Wright.) The branches and 
leaves are sometimes more or less pubescent. 

Phytolacca deoandra, Linn.; Moq. I. c. -p. 32. Mouth of ibe Eojo San Felipe, September ; 
Schott. The specimens seem to belong to a depauperate form of the plant. The racemes are 
only 6-10-iiowered. 

LAURACEiE. 

Oreodapiinb Oalieorsica, iVees, Syst. Laur. p. 463 ; Torr, Bot. Whipple's Eep.,p. 133. In 
various parts of California, especially in mountainous districts ; Parry, Thurher. Besides the 



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popular names of the plant mentioned in the report here c[uoted, it is called Sassafras- Laurel, 
Cajepufc Tree, and California Olive. The fruit varies from ovate or obovate to nearly globose. 

SAtTTALACEJi:. 

CoMANDKA UMBELLATA, Null. Gen. 1, -p. 157. Var. AKGCSTIFOLIA. C. pallida, /9 angustifblia, 
Alph. DC. Frodr. 14, p. 637. Hueco mountains and at the Copper Mines, New Mexico ; also 
in western Texaa, Chihuahua, and Sonora, April. (Nos. 78 1 and 784, Wright.) We have 
specimens that connect this variety with the ordinary form of the plant. 

LOEANTHACEJi:. 

Phoradbndron paucielorum, Torr. in Whipple's Rep. p. 134. Sierra del Pajarito, Sonora ; 
growing on Juniperus ; Schott. Yanos ; Oapt. E. K. Smith. 

Phoradendron Calipornicum, Null, in Jour. Acad. Phil. (w. ser.) 1, p. 185 ; Torr. I. c. On 
cotton-wood {Populus monilifera) along the lower Colorado of California, March and February; 
Schott. On mesquit treesi (Algarobia glandnlosa), borders of the Gila and near Ea^le Pass 
western Texas ; Pa,rry, Schott. Fructiferous spikes variable in length. 

Phoradbsdron plavebcbns, NuU. I.e. var. olabriusculum, Engelm. in Gray, PI. Lindh. 1,p. 
212. Common in the valley of the Kio Gfrande, on Algarobia (with male flowers only); Schott. 
On the Mimbres, in frnit ; Bigelow. The male spikes vary considerably in length and in the 
number of their joints. Sometimes they exceed the leaves. The axis between the joints is 
thickly covered with flowers, sometimes to the number of 60 or more. 

Var. PUBKSCENs, Engelm.. I. c. Howard's Springs ; Bigelow. 

Phoradendron jonipbbthum, Engelm. in Gray, PI. Fendl. p. 59. Near the Copper Mines, New 
Mexico ; Bigelow. Howard's Springs ; Parry. 

AacEUTHOBiUM CAMPYLOPODUM, Engelm-. I. c. On pine trees near Monterey, California ; Parry. 
The fertile plant only was collected. 

EUPHOEBIACE^. 

The genus Euphorbia has been kindly elaborated for this report by my friend George Engel- 
mann, M. D. 

§ I. ANISOPHYLLUM. 

Euphorbia petaloidea: patuio-raraosissima ; foliia oblongis oblongo-linearibus linearibusve 
retusis mucronatis ; glandulis alho-appendiculatis ; seminibus Isevibus. 

a. NicOLLETii : foliis stylisque brevioribus ; anthodiis cymulosis ; seminibus ovatis. 

^. intermedia : foliis angustioribua ; stylis longioribus ; anthodiis cymulosis. 

7". Ndttallii : foliis linearibus ; anthodiis alaribus ; appendiculis orbiculatis ; stylis elongatis, 
seminibus subglobosis. E, arenaria, Nutt. PI. Arkans. p. 171, non H. B. K. 

S. PLAGKLLiFORMrs : priori similis, sed appendiculi minimi, styli breves. Of these varieties 
a and (9 have not been found witliin the districts explored by the Boundary Commission, but 
they probably occui' there. The var. y is common in Texas. Wright's 1826, belongs to var. 
S, a New Mexican form. 

Euphorbia serpens, H. B. K. E. herniarioides, Nutt. I. c.p. 171. In the southwestern parts 
24 k 



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186 UNITED STATES AND MEXICAN BOXINDAEY. 

of North America (abundant on the Mexican houndary line) and throughout Central and South 
America, hut not in the eaetern States. E. micropbyila, Moth, from India, is the same 
plant. 

Euphorbia kevoluta (nov. spec): erecto-patula; foliie linearlbus revolutis ohtusis basi suh- 
jequalihua, stipulia setaceis ; anthodiis alarihus ; glandulis angusto appendiculatis ; stylis 
recnrvis apice hifldis ; capsula acute angulata, seminihua angustis acute angulatis transverse 
rugosis. (G-ravelly hills near Kock creek ; Bigelow. On the Eio Grande ; Wright, No. 1830.) 
New Mexico ; Fendler, So. 789. Very slender, 4-5 inches high ; leaves 6-10 lines long and ^ 
line wide. Habit like a small slender E, petaloidea, but styles and seeds very different. 

Euphorbia polycarpa, Benth. Sot. Sulph. p. 50. Dry soils near San Diego, California ; 
Parry, Schott. Banks of the Gila ; Major Emwy. Sonora ; Wright, No. 1854. This is a very 
variable plant, if all the forms which I refer to here really belong to it. Seeds smooth or 
undulate, appendages none, or small or large ; plant smooth or pubescent, (and then always 
with short patulous hairs.) Collected by all the botanists from the upper Gila to San Diego. 
The only species of the section Anisophyllum which, so far as I know, has both smooth and 
pubescent forms, with the exception of E. hypericifolia. 

Euphorbia Arizonica, (nov, spec): erecto-patula; foliis e basi lata suhrequali ovatis obtnsis 
pilosis ; stipulis inconspicuis ; anthodiis alaribus longius pedunculatis ; appeudicibus glandnla 
purpurea multo majoribus obovatis tubQ iurbinato postjce fisso brevioribus ; stylis ereetis ad 
medium hifldis ovario puberulo longioribus, stigmatibns flliformibus ; capsula pilosa ; seminibus 
rugoBo-verrucosis ad angulos aeutos crenulatis. Sierra Yanos, Sonora, July ; Schott. Stems 
4-5 inches high ; leaves 3-4 lines long, 2^-3 lines wide. Seed very small, involucrum with 
the appendage \\ line in diameter. 

Euphorbia pbdicuiji'era (nov. spec.) : procumbens, cinereo-pubeseens ; foliis ovatis obtusius- 
culis ; stipulis e basi lata lanceolatis ; glomerulis parvifloris in ramulis alternis terminalibua ; 
involucris hemisph^ricis ; glandulis magnia ; appeudicibus transversis crenatis ; stylis patulis 
pubescentihns ad basin Jere bifidis ; stigmatibus divaricatis ; capsula acute angulata pubescente, 
seminibus compressis angulatis sulcis 4 profundis transverse incisis. Sonora; Wright, (No. 1848,) 
Schott. Spreading 6-12 inches. Leaves 3-4 lines long, oblique. Involucrum large. Seeds 
0.7 line long, deeply 5-lobed, similar to some insects. 

Euphorbia Fendlbbi, Torr. d Gray, Bot. Pope's Pep. p. 19. E. rupicola, Scheeh in Linncea, 
22, p. 153, non Boiss. Common in New Mexico and Western Texas ; Lindheimer, Wright, 
Bigelow. Sonora ; Thurher. Variable in the form of the leaves and the shape or presence of 
the appendages. 

EuPHOEBiA ALBOMARGINATA, Torr. & Gray, I. c. p. 18, Common in the whole region between 
western Texas and the Great Colorado, and southward into Mexico. It is No. 330 of Drum- 
mond'a second Texan Collection. 

Euphorbia cinerascbns (nov. spec.) : erecto-patula s. subdecumbens, pubescenti-canescens ; 
foliis e basi lata obliqua ovatis s. suborbiculatis obtusis supra glabratis ; stipulis lanceolatis 
minutis mox deciduis ; glomerulis lateralibus ; involucris canis ; glandulis (plerumque purpureis) 
angustissimis marginatis ; stylis brevibus pilosis ; capsula acute angulata oana ; seminibus 
ovatis acute angulatis lieviusculie. On the Rio Grande ; Wright. Chihuahua and Sonora ; 
Thurher. Bishop's Hill, near Monterey, Mexico ; Oregg. 

/9. APPENDICULATA : foliis utrumquc einereis ; appeudicibus majoribus truncatis crenulatis ; 
stigmatibus longioribus. San Felipe, California; Dr. Le Conte, Thurher ; and San Gabriel, 
Bigelov). Stem 4-6 inches high; rounded leaves often tawny red, lJ-2 lines long; flowers 



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BOTANY. 187 

few. Mr. Thurber informs os that tliia plant is called Yerha de la Gohndrina. in Sonora. The 
Mexicans believe it to be a certain cure for the bite of a rattlesnake and other poisonous animals 
The bruised fresh plant or the dried, steeped in wine, is applied to the wound. A tincture of 
the plant is sometimes kept in the apofchecarys' shops of that country. According to Dr. Gregg, 
Ihe name Golondrica is applied to all the prostrate Euphorbia. 

EuPHOSBiA m^QUiLATERA, SoTider in LiitncBa, 23, p. 105. I cannot distinguish from this plant 
of the Capo of Good Hope a species of the plains of Nebraska, Kansas, and Texas, and which 
extends into New Mexico, California, and Oregon. There it has been collected since the 
explorations of Nicollet and Fremont by almost every traveller, (e. g., Fendler, 791, 795, 803 ; 
Wright, 666, 1823, {in part,) 184(5.) The same plant has been sent from Florida by Blodgett 
and Chapman, is found on the West India Islands, is undoubtedly the E. Nilagirica, Miq., of 
India, and has also been observed in New Holland ; but it seems unknown in other States east 
of the Mississippi. 

Euphorbia glyptosi'bema (nov, spec.) : erecto patula seu demum decumbens ; foliis e basi 
valde obliqua (latere inferiore producta) sequilatis oblongis s. oblongo-linearibus obtusis versus 
apicem subserratis s. integriusculus ; stipulis setaceis laciniatis, anthodiis alaribus demum in 
. glomerulos laxos laterales confertis ; appendiculia brevibus integris seu crenatis ; stylis brevibus 
apice bilobia, stigmatibus suhglobosis ; seminibus ovatis argute rugosis ad angulos acutoa 
crenatis. B. polygonifolia. Hook. Fl. Bor. Am, fide spec, auctoris non Linn. 

j9. TENEBEIMA : foliis parvulis angustis apice vix crenulatis ; involucri minuti glandnlis vix 
seu non appeudicnlatis. On the Rio Grande ; also on the Arkansas, and extending to the 
upper Missouri. (No. 1853, 1855, and 1856, Wright.) From a few inches to a foot high. The 
larger northern forms have leaves 3 to 6 lines long and 1 to 2 lines wide. In ^ the leaves are 
1 to 3 lines long and ^ to 1 line wide ; involucrum in the latter only 0.3 line long. Seed very 
sharply cross-ribbed, similar to that of F. prostrata, and notched at the angles. 

Euphorbia stictospora (nov. spec.) : erecto-patula, foliis e basi obliqua subcordata orbiculatis 
seu ovatis argute serratis supra subnudis ; stipulis subulatis ciliatis ; glomerulis lateralibus 
sessilibus ; glandulis angustis appeudicnlatis ; stylis ovario pubero brevioribus patulis indivisis; 
stigmatibus 3 capitatis ; capsula puberula ; seminibus angustis acute angulatis exsculpto- 
punctatia. From Kansas {Fendl&r, 798,) to Santa Fe {Fendler, 797) and Dona Ana, {Wright. 
59,) New Mexico, and Corallttas, Chihuahua ; Thurber. Stem 3-6 inches high. Leaves 2-4 
lines long ; apparently near E. prostrata, but styles and seeds very different. 

Euphorbia prostrata. Ait. This variable and often mistaken species is found from western 
Louisiana (Dr. Hah) to Texas; {Lindheimer, 635 ;) {B erlandier, UOO, 2530;) {Wright, 1848 
in part, 1855 in part.) It seems to be a common plant in the West India islands, Mexico, and 
South America. It occurs in Africa and India. Euphorbia tenella, H. B. K., and F. callibri- 
choides, H. B. K., are forms of the same species, which can always be recognized by the ciliate 
angles of the capsule and the sharply rugose seeds, notched at the angles. 

Euphorbia dioica, H. B. K. (E. anceps, Bentk. E, callibricboides; Schauer, etc.,) a common 
and very variable plant of Mexico, Central America, and the West India islands, has been 
collected by Dr. Anti-sell on the upper Eio Grande. 

Var,? iNDivisA, distinguished by the annual root, the less coriaceous, less oblique and less 
distichous leaves, the more scattered involucra and the undivided styles ; has been found near the 
Copper Mines, New Mexico, by Mr, Wright, (No. 1845) and in Sonera by Mr. Thurber, 
(No. 963.) 



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188 UNITED STATES AND MEXICAN BOUNDARY. 

Euphorbia Sbrrula (nov. spec,): patula aeu decumbens ; caule patenter piloao ; foliis e basi 
valde obliquo obtusiuacuia seu Bubcordnta oblongis sfepe falcatis obtuais argute grosseque 
eerratia, eubtus pilosis ; stipulis lanceolatis laciniatia ; glomerulis lateralibas appendicibua 
angustis integris seu crenulatis ; atylia ovario glabro brevioribtia patulis ad basis fere bifidis ; 
seminibus ovatis lievibua costato-angulatia. Western Texas and New Mexico. (No. 658, 1843 
and 1844, Wright. No. 796 and 804, Fendler.) Stems 4-6 incbea long. Leaves 3-5 lines 
long, 1-3 lines broad, sharply and coaraely serrate ; aeeda larger tban in all the foregoing 
species, 0.8 line long, remarkably angled. 

Euphorbia villifera, Scheele in Linncea 22, p. 153. Western Texas ; Berlandier, 2084 ; 
Lindkeimer, 530 ; Wright, Thurier. In various parts of Mexico ; Gregg. Root annual, stems 
erect, often a foot high. 

EupiiOEBrA HypERiciFOLiA, Idnn. 8p. 1, p. 454. New Mexico ; Wright (No. 1842 in part ) 
Chibuahua ; Thurber. The true Linna^an plant probably comes' from the West Indies and 
other tropical countries, and has also been sent from Florida by Dr. Chapman. It is distin- 
guished by smaller anthodia, generally disposed in denser clusters, smaller capsules and smaller 
paler seeds. The common North American form, which has also been collected abundantly 
along the boundary, has larger and more scattered anthodia, larger capsules and larger blackish 
seeds, and may he distinguished as var, communis, as it seems to be the more common form 
throughout the warmer countries around the whole globe. 

Euphorbia pilulifera, Linn. ;5 mscoLOR : diffusa ; foliis e basi valde obliqua ovatis subrhom- 
boideis acutiuscnlus serratis, purpureo-maculatis, atipulis suhulatis, capsula parvula pilosa, 
seminibua minutis ovatis acntia nndulato-tuberculatis. Sonora ; Thurber. Wright, No. 1842, 
in part. Mr. Bhdgett found it in Florida. Stems ^-1 foot long. Leaves 1-1^ inch long; 
differs in shape and color of leaves from the usual forms of E. pilulifera ; hair of the stem as 
in all forms of this species yellow and jointed ; involucre only \ line long ; heads 3-4 lines in 
diameter ; seed scarcely more than \ line long. 

Euphorbia capiteij,ata (nov. spec.) : annua, erectiuscula seu demum diffusa ; caulibus elonga- 
tis puberulis ; foliis e basi valde ohliqua oblongo linearibus subnudis argute serrulatis mucronatis ; 
stipulia lanceolatis laceris ; glomerulis densifioris terminalibus fere aphyllis ; involucri glandulis 
longius stipitatis, appendiculis orbiculatis s. late obovatis integris ; stylis ovario hirfco longio- 
ribua ad medium bifidis; stigmatibus filiforraibus divaricatis; capsula pnberula ; seminibus 
ovatis acutatis angulatis rugoso-tubeiculatis. Valleys at San Bernardino, Sonora ; Wright, 
(No. 1 ,849.) Stems 6-1 inches long ; leaves 6-8 lines long, 2 lines wide ; heads white, showy, 
4-6 lines in diameter. 

Edphoebia pycnanthema (nov. spec.) : perennia, erecto patula, canescente-pubescens ; foliis e 
basi lata obliqua cordata ovatis s. oblongis obtusiusculis sfepe mucronulatis integris s. subserru- 
latis, scabris ; stipulis lanceolatis fiasis ; glomerulis terminalibus multifloris quasi involucratis ; 
involucris pilosulia (primariis) late orbiculato-appendiciilatis sen (aecundariis) subnudis ; stylis 
fere ad basis flssis patulis ; stigmatibus divaricatis clavellatis ; capsula suhglobosa pubescente ; 
seminibus acute angulatis transverse rugulosis puuctatisque. Mountain sides near Lake Santa 
Maria, Chihuahua; Wright. Numerous stems 6 inches high, from a thick ligneous root; leaves 
4-5 lines long. General appearance of a small labiate plant with terminal involucrate heads, 
similar in many respects to the last, but more erect, more hairy, leaves shorter. Kemarkable 
for the different involucres on the same head, reminding one of Hydrangea or some Umbellifera. 

Euphorbia lata. E. dilatata, Torr. <& Gray, Bot. Pope's Eep. p. 19 ; non Hochst. in Richard. 



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BOTANY. 189 

FloY. Abyssin. Weatem Texas, San Pedro ; fFW^Ai, No. 1841. On the Cimaron ; Fendler, 
No. 794. Eagle Springs ; Bujehio. 

EuPHOEBiA ACUTA (hov. spec.) : pereunis, multicaulis, erecta, foliosa, hireuta; foliis e haai 
obtusa subsequali lanceolatis aciitatis cartilagineo-mucronatis supra nudis ; stipulis filiformibus 
mox decidiiis ; anthodiia versus caulia apicem a'.aribus a, pseudoaxillaribus sparais ; iiivolucria 
hemisplisericia appendicibas truncatia crenatis lobatisve ; etylig patclie ultra medium bilobis 
ovario cano longioribua capaula cana; seraiQibus subcubicis acutis acute angulatis Itevibua. 
Stony prairiea western Texas, along the San Pedro and Pecos rivers, &c.; Bigelow, SohoU. (No. 
1739 and 1749, Wright.) Stems ^-1 foot high; stiff rigid, leaves 6-10 lines long, 3-6 
lines wide, well characterized by the very acute point ; seeda 1 line long. 

Eui'HOEBTA AKQUSTA (nov. spec.) : perennisj erecta, elatior, rigida ; foliis lanceolato-linearihua 
basi acuta siibasc[ualihus acutis integrie denium glabratis ; stipulis aubnlatis minutia deciduis ; 
anthodiis pseudoaxillaribua sparsig ; appendicibus truncatis crenatis saspe bilobis erectis ; stylis 
brevibus erectis apice bilobis ; capsula cana acutangula ; seminibus ovato-cubicis acutangulis 
transverse rugosis foveolatis. In rocky places western Texas ; Lindheimer, No. 694 ; Wright 
No. 1828. Oq the Eio Grande ; Schotl. Erect, 6-15 inches high ; several sterna form a large 
black perennial root with few or numerous elongated branches; leaves few, 6-15 lines lono- 
1-2 lines wide. Seeds 0.8 line long, strongly marked. 

Euphorbia Florida (nov, spec.) : annua, erecta, patulo-ramosa, glaberrima ; foliis lanceolato- 
linearibus seu linearibus in petiolis attenuatis serrulatis mucronatia ; stipulis Hneari-aubulatis 
srepe 2-3-fidis; involucrie alaribus in cymulas terminalea laxas congestis; pedunciilis petiolum 
longe superantibus ; lobis involucri ovatis acutia aeu acuminatis ciliatis seu rarius laceris ; ap- 
pendicibus magnis (involucro ipso majoribus) orbiculatis seu ovatis pctaloidels integria ; stylia 
ovarium ffitjuantibus aeu superantibus basi coalitia ad medium seu ultra bifldia ; stigmatibus 
filiformibus ; capaula obtuse angulata ; seminibus sabcabicis acute angulatis Ifevibus transverse 
2-costatis. Sonora; Wright, (No. 1829,) Tkurber, Schoti. Stem ^-1 foot high; leaves 12-18 
lines long, 1-1^ line broad ; margin re volute, and serratures thereby often invisible. Involucre 
with large bright white appendages, 3 lines in diameter. 

Euphorbia TRAcnyspERMA (nov. spec.) : annua, erecta, glaberrima ; foliis e basi subiequali 
obtusa seu angustata oblongo-lanceolatis serratis mucronatis ; stipulis filiformibus seu subulatis 
setaceo-liasis ; anthodiis alaribus demum in cymulas paucifloraa terminales s. laterales confertia ■ 
appendicibus angustis albia ; stylis ultra medium bifidis ; capsula obtusangnla; seminibus sub- 
cubicis faciebus l^viusculia, angulis acutis crenatis asperatis. San Pedro ; Sonora, Wright 
No. 1832. Slender, erect, about 1 foot high, branches erect, few ; leaves 9-12 lines long, 2-3 
lines broad ; seed 1 line long. 

EuPHORBfA BXSTIPULATA (nov, spec.) : annua, erecto-patula, ramosa, glabriuscula seu minute 
sparaimque aapcra ;, foliis lanceolatis seu lanceolato-linearihua argute serratia basi ^quali in 
petiolem brevem anguatatis ; stipulis subnullis s. glanduliformibus ; anthodiis alaribus solitariis ; 
pedunculis petiolo brevioribua ; appendicibus anticis plerum(jue 2-lobati8, posticis majoribus 4- 
lobatis ; stylis ovarium ad augulos scabrum ^quantibus, profunde bipartitis ; stigmatibus 
filiformibus ; seminibua magnis subcubicis verrucosis et transverse 2-3-costatis. Western 
Texas ; Wright, (1833 and 1838.) New Mexico ; Fendler, (No. 790.) Sonora ; Thurber, Bigelow, 
Parry. Stem about 6 inches high ; leaves about 1 inch long, 1-2 rarely 3 lines wide, some- 
times not absolutely opposite, but a little separate ; seed 1 line long, with thick cross-ribs. A 
transition form to the next sections. 



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UNITED STATES AND MEXICAN BOUNDARY. 



: II. ZYOOPHYLLEiE. 



EuPHOBBiA HEXAGONA, Nutt. in Spreng. Sysi. 3, p. 791. E. heterantha, Null, in Trans. Amer. 
Phil. Soo. {n. ser.) 5, p. 173. Rio Coleto, Texas; Thurler. "Many years ago Mr. Nuttall 
gave me specimens of this plant, named E. hexagoua. Part of theae were sent to Sprengel, 
who first published a description of the species in the work quoted. Eight years afterwards 
Mr. N. described the plant under another name. It is remarkable for being polygamous ; most 
of the involucres containing only male flowers." — Torrey, MS8. 

EupnoRBiA BILOBATA (nov. spec ) : annua, erecta, gracilis; foliis oppositia breviter petiolatis lan- 
ceolato-linearibua acutatis integris glabriusculis, raraeis angustioribus ; anthodiis alaribus 
campanulatis ; glandulis bilobis, appendiculia binis lanceolatis seu abbreviatis ; stylis vix baei 
connatis ad medium bilobis ; stigmatibus erectis subteretibua ; capsula lieviuscula, seminibus 
ovatis acntis angulato-tuberculatis. Near the Copper Mines, New Mexico ; Bigel w. Eastern 
Sonora; ITH^Af, (No. 1831.) Stems 6-15 inches high; leaves 10-15 lines long, 1-- lines broad; 
seeds 0.8 line long, strongly tuberculate and almost angular. Glands remarkable and very 
constant in shape ; appendages white. Near E. hexagona ; diatinguiahed by the acuter more 
uniform leaves, bilobed glands, terete stigmata and smaller tuberculate seeds. 

EuPHOEBiA BiFURCATA (nov. Spec.) : glabra ; caule erecto dicbotomo ; foliis oppositia ovatia seu 
obovatis in petiolem graeilem sub^cLuilongum angustatia argute serratls obtueis basi glanduloso 
stipulatis; anthodiis alaribus breviter pedunculatis ; lobia 5 ovatis truncatis flmbriato-multifidis ; 
glandula singula cyathiforini late albo-appendiculata, appendice transverso emargiiiato ; stylis 
basi coalitis ad medium bifldia, stigmatibus filiformibua. Moist places, Valley of the Limpio, 
July ; Bigehw. Over a foot high ; leaves 1 inch long, \ inch wide ; petiole a little shorter 
than leaf. 

§ III. CYATH0PH0EJ3. 

EuPHOEEiA DESTATA, Mickx. ; /3 RiGiDrA : humilior rigida ; foliis parvis coriaceis reticulato- 
venosis scahria margine revolutis. Head of San Pedro river ; Wright. (No. 1837.) Near 
Monterey, Mexico ; Dr. Edwards, j-. cuphospbuma : erecta, atricta, deutata seu parce pilosa ; 
foliis lanceolatis seu lineari-lanceolatis elongatis subdentatis ; capsulis glabris seu pilosis ; semi- 
nibus majoribus tuberculato-angulatis. Copper Mines, New Mexico; Wright, [No. ]834,) to 
Sonora; SckoU. Ojo de Gabilari, Chihuahua; Thurber. 

EuPHOEBiA iiETEROPHYLLA, Linn. (E. cyathophora, Murr.) Var. oraminifolia : foliis angusto- 
linearibua. Crevicea of rocks and dry beds of rivers. Eio San Pedro, Texas ; Bigelow, SchoU, 
Wright, (No. 653.) South of El Paso ; Wright, (No. 1835.) 

Euphorbia baebellata, (nov. spec) : annua, erecta, glabriuscula ; foliis spareis linearibus seu 
lanceola to-linear i bus seu ovatis lobatisque breviter petiolatis parce argute dentatis, subtus ad 
nervum medium parce pilosis, basi pilis longioribua confertis barbatis ; foliis floralihus ovatis 
seu e basi diiatata elongatis, basi roseis ; anthodiis glomeratis majusculis ; glandula singula 
sessili lobia inoiso-dentatis breviore ; stylia brevibua erectis basi vix connatis ad medium bifldis. 
On the Uio Grande, near Eagle Pass; Wright. Eio Frio ; Bigehw. Near E. heterophylla, but 
stouter, leaves very sharply serrate, involucre larger, styles shorter. Leaves 2-4 inches long, 
^ or f inch-1 or 2 lines wide. Beard of coarse hair at base of leaves very conspicuous. 

EupiiOEEiA cOLOBATA (nov. Spec.) : erecta, glaberrima ; foliis breviter petiolatis sparsis patu- 



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lis elongato-linearibus revolutis integris ; foliis floralibua basi paullo dilatatia jniniceia aiibinde 
circinatis ; glanduUs 1-2 stipitatia cyathiformibiis compressis margine revoluto stepe crenulatis 
invoSiicri lobos laciniatoa coloratoa auperantibua ; stylis brevibua purpureis erectis longe connatia, 
apice bifldis, etigmatibus acutis demuni recurvis. Dry arroyas, Aqua Zarco, Sonora, May ; and 
Santa Cruz, Sept. ; Thurber, d Gapt.E. K. Smith. Specimens incomplete, nearly a foot high. 
Leaves 3-4 inches long, scarcely more than a line wide ; floral leaves shorter and about 2 lines 
■wide, deep crimson. Distinguished from E. heterophylla by the narrow revolute leavea, etc. 
Margin of involucre and styles also purplish. Capsule glabrous and seeds tuberculate, as in the 
allied species. 

Euphorbia radians, Benth. PI. Hartweg,p. 38. Plains between San Bernardino and Santa 
Cruz, Sonora, April ; Cupt. E. K. Smith. Dry valleys near Buena Vista, Mexico ; Dr. Gregg, 
Dr. WisUzenus ; Mexico ; Berlandier, (No. 116 and 1375.) Root tuberous ; flowers in early spring, 
before the leafy shoots put out. 

EuPHOEEiA EKiAXTHA, Benth. Bot. Sulph. p. 51. Sonora ; WrigU, (No. 1841 ?) 

§ IV. UMBELLATE. 

Euphorbia Weiohtii, Torr. & Gray, Bot. Pope's Rep. On the San Felipeand the San Pedro, 
western Texas ; Wright, (No. 1827.) 

Euphorbia multicaulis, (nov. spec.) : annua seu biennis, multicaulis, bumilis, erecta, glabra ; 
foUis lineari-oblanceolatis acutis mncronatis serrulatis basi angustata sessilibus ; umbellis tri- 
fldis, ramis bifidis, bracteis lanceolatis, superioribus ovato-lanoeolatis acutia ; involucri glaudulia 
tranverse ovatis ; stylis basi liberis ad medium seu ultra bifidis ; capsulte coccis dorso verrucosis; 
seminibus lenticularibus la^vibus fuscis. Sonora ; Thurber. About a dozen stems form a taper- 
ing root, 6 inches high, and wiih erect branches ; leaves 4-6 lines long, 1 line wide. Nearly 
allied to E. obtusata. 

EuPHOBBiA DicTrosPERMA, Fisch. dt Mey. Ind. Sem. Fetrop. 1835. E. Arkansana, Engelm. 
d Gray,Fl. Lindh.l,p.2Q. Western Texas ; Wright. Var. Mbxicana : annua seu plerumque 
biennis, e basi erecto-ramoao ; foliis versus apicem crenato-serratia, lobis involucri aubintegris ; 
ovarii coccis dorso solum verrucosis. Valley of the Nagas, Balson de Map'imi, Dr. Gregg; 
western Texas ; Wright, (No. 1824.) y leiococca : capsulis lasvibus seu vix bine inde verru- 
culosis. Texas; i^rMmmowd; II. 327. Near the Colorado, of Texas ; Wright. 

Euphorbia ietrafoea (nov. spec); annua^ erecta, glaberrima ; foliis cuneatis obtusis seu ple- 
rumque retusis emarginatis obcordatisve ; umbellis trifidis ; bracteis spathuiatis seu superioribus 
orbiculatis basi truncatis ; cornubus involucri setaceia glaudulam transveraam asquantibua ■ 
capsnla dorso lasvi ; seminibus facie ventrali 4-punctatis, dorsali Itoviusculis. Georgia ; Boykin. 
Louisiana ; Hole. Texas ; Lindheim&r, Wright. Near E. Peplus as is the following species 
but distinguished by the capsule and the seeds. 

Euphorbia Peplidion (nov. spec): annua, erecta, glaberrima, e basi ramosissima ; foliis 
confertie e baai angustata lineari-oblanceolatis obtusia ; umbellis 3-fidis diehotomis, bracteis 
lanceolatis acutis; cornubus involucri glandulam ipsam tequantibus linearibus obtusis; capsule 
coccis obtusis non alatis seminibus facie ventrali 2-suIcatis, dorsali punctato-exsculptis. Sandy 
soils, western Texas ; Wright, (No, 1823.) A small plant, 3-4 inches high, much branched 
from the base, of the habit of E. exigua. Seeds very similar to those of E. Peplus, 0.6 line 
long. 

Euphorbia peploidis, Nutt. in Trans. Amer. Phil. Soc. (n, ser.) 5, p. 172, non Gouan. E. 
longicruris, Scheele in Linncea, 22, p. 152. Western Texas ; Wright, (No. 1822 ;) Lindheimer, 



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192 UNITKD STATES AND MEXICAN BOUNDARY. 

(No. 529 and COS ;) Drummond, (Coll. 11, No. 331.) If E. peploides, Gouan, of Southern 
Europe should prove to he a distinct speciesj Scheele's name must stand for ours. 

EurHORBiA BRACHYCERA (nov. spcc): annua (?), multicaulis, ramosa, erecta, glaherrima ; foliis 
in petiolum breviesimum angustatia laneeolatis seu lineari-lanceolatis aeutis mucronatis ; umbella 
3-fida seu raro 4-5-fida; ramia pluriea hifldis; hracteis inferioribus ovato-lanceolatis superioribus 
rhombeo-orbiculatiB mucronatis; glandulis hreviaaime obtuseq^ue cornutia; aeminibus majnaculie 
OYatia macnlis irregularibua Sispe confluentibus leviter impressis. Westfrn New Mexico ; Wright, 
(No. 1821.) Many atema a foot high from a atout hut apparently annual or biennial root; 
leaves 6-9 linea long, about 2 lines wide, patulous (not^erect as in E. esulicformia) regularly 
lanceolate ; upper part of the atom quite ramose ; horna shorter than in any of our apecies, and 
eometimes almoat rudimentary. Seed 1 line in length, similar to those of E. esulfeformie, 
montana and Eoemeriana. 

EupHOEBiA MONTANA (nov. Spec.) : perennis, glaherrima; caulibus plurihus ascendentihus ; foliis 
brevibus laneeolatis ovalis obovatis seu suborbiculatia acutis seu obtusia basi aubinde subcordatis 
subseasilibus coriaceis glaucis ; hracteis omnibus orbiculato-triangularibus, rariua auhcordatis, 
superioribua aubinde transverse ovato-triangularibus, omnibus cuspidatis ; glandulis aemilunatis, 
cornubus triangulatia brevibua; seminibua maculis plus minus impressis obscuris confluentibus 
undique notatia. 

o, OEACixiOK : caule tenuiori ; foliis minoribue suborbiculatia obovatis seu laneeolatis. 

;3 EOEL-STA : caule robustiore ; foliis bracteisque majoribus eraasioribus late ovatia aeu ovato- 
cordatis. 

The var. a in New Mexico ; Fendler, (No. 786 ;) Wright, (No. 661, 1825.) San Luia 
Mountains, Sonora ; Capt. E. K. Smith. Stems 4-8 inches high, leaves 2-3 lines long, in 
young specimens imbricate and red. 

Var. /9, on the upper Platte ; James, Nuttall, Fremont; ia a much atouter plant. Leaves 5-6 
lines long, seeds larger. Dr. Wislizenus collected intermediate specimens near Albuquerque. 

Edphoebia ceenulata (nov. spec.) : annua, erecta, glaherrima ; foliia obovatis acutis in haain 
attenuatis minute crenulato-aerrulatis mucronatis ; umbella 5-fida, hracteis inferioribus late 
ovatis acutia, auperioribus transversia, omnibus tenuiter serrulatis mucronatis ; involueri 
glandulis longe tenuiterque cornutia ; seminihue ovato-subglobosis cinereo-fuacia, maculis 
obacurioribus irregulariter confluentibus parum impresaia. California; Hartweg, (1950.) Near 
Monterey ; Dr. Parry. About 1-2 feet high, simple or branching above ; leaves about 9 lines 
long, 5 linea broad, involucelts broader and ahorter ; seed nearly a line long, unusually dark 
for this section. One of the very few peploid Euphorbife with crenate leaves. 

EupnoEBiA ESULJEFOEMis, S. Sohauer in Linncea, 20, p. 729. Near the Copper Mines, New 
Mexico ; Wright, (No. 1820 ;) Bigeloio, On the Nueces, western Texas ; Wright. San Luis 
Mountains, Sonora ; Capt. E. E. Smith. This species seems to be scarcely distinguishable from 
the Mexican E. campestris ; SchlecUendal. The original specimen of the latter, however, has 
longer and more slender horns ; the seeds are wanting. The original specimen of E. esulaBformis 
has similar but smaller seeds than our plant ; the horns are also very abort and incurved, the 
gland itself is truncate and notched. Euphorbia brachycera and E. montana come very near to 
this species. 

Var? subdentata: foliia oblongo-linearibus brevissime petiolatis, inferioribus integria obtnais, 
superioribua versus apicem mucronatum dentatia, hracteis ovatis obtusia aeepe grosse dentatis. 



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BOTANY. 193 

San Francisco Spring, Sonora ; Pari-y. The seeds were not ripe. This is, perhaps, a distinct 
species, but it must remain as a variety until raore complete specimens are obtained. 

Euphorbia Lathyeis, Linn, is somewhat naturalized around Monterey, California. It was 
doubtless introduced by the Spaniards. We have it also from Saltillo, Mexico, where it was 
collected by Gregg. 

§ V. SPAESIFLOR^. 

EuPDORBtA MiSEKA, Bentli. Bot. Sulph. p. 51. Near the sea, San Diego, California; Parry. 
A straggling bush, about 3 feet high, abounding in a milky juice. Nuttall found it at Santa 



Eui'HOEBiA AKTISYPHILITICA, Zucc. Acad. Mon. 1, p. 292 . Rocky and gravelly hills along the 
Rio Grande, from the Presidio del Norte to Laredo ; Bigelow, Schott. Remarkable for its long 
terete nearly leafless branches, which resemble an Eq^uisetura or an Ephedra. 

PnYLLANTHUS Carolinianus, Walt. Fl. Car. p. 228 ; Ell. Sp. 2, p. 661. P. obovatua, Willd. 
Sp. 4, p. 574. Maschalanthua obovatus, NuH. Trans. Amer. Phil. Soc, (m. ser.) p. 175 
Southern Texas, common. 

PuYLLANTHDB P0LYG0S0IIIG3, NuU. I. c. P. Roemerianus, Scheele in Linnaia, 25, p. 583. Dry, 
sandy, and rocky places along the Rio Grande, from New Mexico to the Gulf, and westward in 
the Mexican States. {No. 1S19, Wright; No. 337, Coll. II, Drummond.) This is certainly an 
annual, but late in the season, when the lower part of the stem and the root have become indu- 
rated and ligneous, it appears as if suffruticose. 

PuYiiANTiius ERicoiDES (n. sp.) : fruticulosus, ramosiasimus ; foliis ohlongo-lanceolatis imbri- 
cato-confertis snbsessilibus glabris coriaceia raucronatis ; floribua dioicis axiilaribus solitariis 
brevi-pedicellatis ; calycibus 5-(raro 6-) partitis. High mountains near the Rio Grande in 
Chihuahua, October ; Parry. Plant about a span high, Leaves about 2 lines long and scarcely 
more than half a Hue wide, acute, nearly sessile, with a pair of subulate persistent stipules at 
the base. Male flowers about a line long. Calyx deeply 5-parted ; the segments oblong and 
somewhat obtuse. Petals none. Stamens 3 ; the filaments united into a column, at the base of 
which are 5 roundish glands. Female flowers rather larger than the male ; the segments oblouo- 
acute. Petals none. Ovary with 5 glands at the base ; cells uniovulate. Styles 3, two-cleft ■ 
stigmas sub-globose. A well characterized species, remarkable for its very smail crowded leaves. 

Lepidantiius phyllasthoides, NuU. I. c. Ravines on the San Pedro river, western Texas ■ 
Bigelow, Schott. (No. 636, Wright.) Mr. Nuttall's description of this very distinct genus can 
hardly be improved. 

Croton Berlakdieei (n. sp.) : suifrnticosum ; ramulis inferne nndis ; foliis ovatis oordatis 
acuminatis membranaceis utrinque stellato-pubescentibus integerrimia vel obsolete denticulatis 
basi eglandulosis ; floribus monoicis, masculis breviter racemosis a-petalis 20-30-andris, fcemincia 
petaliferis ; stylis bis bifidis ; fructibus tomentosis demum glabratis. Neuvo Leon, December ■ 
Thurher. (Noe. 708 and 2125, Berlandier.) Plant apparently about a foot high. Leaves 1-2 
inches long, 1-1 J inch wide ; the petiole more than half the length of the lamina. Racemes 
terminating the branches, pedunculate, Male flowers 10-15, crowded on pedicels about a line 
long. Petals oblong. Stamens with 5 -roundish glands at the base. Female flowers 1-2 at 
the base of the raceme. Calyx woolly, 5-parted ; the segments obiong. Petals 5, very narrow 
two-thirds the length of the calyx. Ovary woolly, with 5 glands at the base. Styles deeply 



25 k 



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194 UNITED STATES AND MEXICAN liOUNDARY, 

twice bifid. We have not been able to find any deaeribed species to which we ciin refer this 
Croton. It is a genuine species of the genus aa characterized by Klotsch. 

Croton Sonor^ (n. sp.) : fmticosura ; foliis ovatis acutiueculis basi obtusis integris supra gla- 
hriusculis infra sparsim stellato-puheficentibus ; floribus monoicis, masculis paucis sub-lS-andris, 
petalis 5 calyoe tequalibus ; fceraineis solitariia vel binis, petalis 5 anguatia calyce brevioribua ; 
diKco 5-lobo ; etylia apice bifidis. Sierra de Nayoa, July ; Sckott. A small shrub, much branched; 
the old branches smooth, younger ones furfnraceous. Leaves about an inch long, green both 
aides hut rather paler underneath. Petals of the male flowera hairy at the base. Stamens with 
5 spherical orange glands surrounding the receptacle. Female flowera one or two at the base of 
the short and few-flowered male raceme. Segments of the calyx rather acute. Petal linear- 
oblong, two-thirda of the length of the calyx. Disk surrounding the base of the ovary rather 
fleshy, 5-lobed. Styles rather stout, somewhat dilated and moderately bifid. Young fruit sub- 
globose. 

Croton suaveolens (n. sp.) : frnticosnm ; foliis ovatis obtusis basi rotundatia integerrimis 
eglandulosis utrinque densissirae lanato-tomentosis ; floribus monoicis, fcemineis solitariis vel 
binis, subsessilibus ; stylis profunde bipartitis ; stamineis brevi-raceraosis 12— 14-andris. On the 
Eio Grande, No. 1804, Wright. A shrub with stout terete stellately pubescent branches. Leaves 
growing mostly towards the extremity of the branches, rather thick, paler underneath. Stami- 
nate flowers 6-10 in a short raceme, sessile, subtended by minute pinnatifid bracts. Petals 5, 
oblong. Stamens commonly 14, Fertile flowers usually in pairs at the base of the staminate 
flowers. Calyx deeply 5-parted ; the segments lanceolate and acute. Disk somewhat 5-lobed, 
with 5 linear or club-shaped processes (petals?) alternating with the calyx-segments. This 
species seems to be near 0. pellitus, S. B. K. 

C. SUAVEOLENS, var. OELONGiFOLiUM : foliis oblongis supra discrete stellato-pubescentibus, subtus 
dense toraentosis ; racemo masculo subelongato multifloro, floribus subsessilibus. Rocky ravines 
along the Rio Grande, from the Pecos and San Pedro to the Gulf. No. 1802, Wright, from the 
Painted Caves, is probably the same, but the specimens are more herbaceous, and they may be 
only luxuriant shoots. Leaves 1-2 inches long and ^-| inch wide, the upper surface much 
darker than the lower, rather acute and somewhat mucronate. Flowers moncecious ; male 
raceme an inch or more in length. Fertile flowers 1-2. Styles 2-parted nearly to the base. 

Croton Lindheimerianum, Scheele in Linncea, 25, ^. 580. Rocky hills, western Texas ; New 
Mexico, Chihuahua and Nuevo Leon ; Buena Vista ; Gregg. (Nos. 641 and 1806, Wright.) Plant 
upright, 1--2 feet high ; the branches herbaceous from a woody base. Leaves whitish tomentoee 
with stellate hairs which are somewhat confluent in the centre. Flower smostly dimcious, rarely 
moncecious, in short racemes, which are subterminal and axillary. Staminate flowers with lan- 
ceolate ciliate petals. Stamens about 12 ; a 5-lobed disk at the base of the hairy filaments. 
Fertile flowers on pedicels 2-3 lines long ; calyx deeply 5-parted. Petals sometimes wanting 
but usually present and very unequal, 1-2 of them linear and nearly as long as the calyx, the 
others much shorter or wanting. Disk conspicuous, 5-lobed ; the lobes opposite the segments of 
the calyx. Styles parted nearly to the base ; the divisions filiform. This species is known by 
the name of Mexican Tea. 

Cboton ERTjTiotiLOSTJM (Ettgelm. MS8.) : caule basi fruticoso ; foliis ovatis vel lanceolato-ovatis 
acurainatis acutiave subcordatis remote minutissime denticulatis eglandulosis supra viridis pube- 
rulis subtus dense stellato-pubescentibus ; floribus monoicis pedicellatis, maaculia racemosis 10-5 
andris S-petalis, fi^mineis apetalie; stylis profunde bipartitis, laciniis elongatia filiformibns. 



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Mountain sides anil rocky ravines, western Texas ; Cliihualma and Sonora. {Nos 639 and 1803, 
Wright; the latter a dicecious form. Noe. 176, 177, and 297 Coll. 1846; Nos. 134 and 297 Coll. 
1847, Lindheimer. No. 3212, Berlandier, in part ; the specimens with hairy fruit heing 0. 
trichocarpa, Torr. Leaves 1 to 2^ inches long, and half an inch to an inch wide, pubescence of 
the under surface often of a yellowish tiage. Inflorescence terminal anl axillary in the upper 
leaves. Staminate flowers 10-20 or more. Petals 5-oblong. Stamens exserted ; filaments 
smooth. Disk 5-lobed, glandular. I'ertile flowers usually 2, sessile, apetalous ; disk indistinct. 
Capsule glohose-trigastric, covered with a short canescent stellate puhesconce. 
* * Hendecandka. 
Croton mukicatum, Nu(f. in Trans. Amer. Phil. 8oc. (n. ser.) 5, p. 173. Hendecandra Texenais, 
Klotsch in Erich. Arch. 1, p. 252. H. mnltiflora, Torr. in Frem. lat Hep. p. 96. New Mexico, 
Central and Western Texas, Chihuahua and Sonora. (No. 1799, Wright; No. 1548, Berlandier.) 
In Nuttall's plant from Arkansas, and in specimens from the Upper Platte, the leaves are 
densely clothed with stellate hairs on both surfaces, but usually the hairs are rather scattered on 
the upper side. The fruit is ro.ughened (often only obscurely) with small protuberances. Styles 
2- parted and the divisions twice cleft, so that there are 24 stigmas in all. 

Oboton mabiumum, Walt. Fl. Carol, p. 383 ; EU. Sp. 2, p. 646. Hendecandra maritima, 
Klotsch, I. c. excel, syn. Crotonia monanthogynis. Galveston, Texas ; Schott. (No. 3213 
Berlandier.) Flowers apetalous. Stamens 11-16 ; filaments hairy. Disk irregularly lobed : 
of the fertile flowers annular and obscurely 5-lobed. Styles thrice cleft. 

Croton aegtranthemum, Michx. Fl. 2, p. 215. Western Texas, on the Lower Eio Grande, 
rare. (No. 1554 and 2552, Berlandier.) Apparently sufi'ruticose. Under surface of the leaves 
somewhat silvery with stellate scales. Flowers moncecious in short terminal racemes. The 
staminate on short pedicels. Petals 5, oblong. Stamens 9-11. Disk with 5 glandular lobea. 
Fertile flowers 4-8 in each raceme, apetalous. Styles twice cleft at the summit; more deeply 
divided in Eerlandier's No. 2552 than in the Texan plant. 

Croton (Hendecasdra) procumbiijns, Fsdisch. in Mem. Acad. Fetersb. 10 (sab Hendecandra); 
Hook. (£ Arn. Bot. Beech., p. 389, t. 91. C. gracile, H. B. K. Mv. Gen. d: Sp. 2, p. m. 
Astrogyne crotonoides, Benth. PI. Hartw., p. 14. Sandy places in various parts of California ; 
Parry, Rich, Le Conte, Fremont. Banks of the Colorado ; Schott. On the Gila River ; Emory. 
Along the Rio Grande, from Frontera downward, in Western Texas, Chihuahua and Nuevo 
Leon ; Wright, Thurber, Bigehio. (Nos. 1800 and 1801, Wright; No. 3211 Berlandier, a broader 
leaved form with more silvery scales.) Some of the forms much resemble 0. argyranthemum. 
That species differs, however, in being only slightly woody at the base ; the racemes are short 
and the flowers are 5-petalled, whereas C. procumhens is decidedly shrubby, the racemes are 
elongated and the flowers apetalous. In the latter, also, the styles are deeply twice cleft. A 
remarkably slender variety of the plant, in which the racemes (or rather the axes, from which 
the lower flowers have lallen) are from 2 to 6 inches long, was found by Dr. Bigelow in a dry 
arroyo opposite Presidio del Norte. 

* * * PiLONOPHYTUM, Klotsch. Hcptalon, Baf. 

CaoTON CAPiTAxuM, Miclix. Fl. 2, p. 214, Gray, Man. ed. 2, p. 391. Pilonophytura capitatum, 

Klotsch., I. c. On the Rio San Antonio, Texas ; Schott. Rio Pecos ; Thurber, (No. 640, Wright, 

Nos. 861 and 2281, Berlandier. No. 862 seems to be the same plant, with the flowers in an 

alijiormal state.) 



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196 UNITED STATES AND MEXICAN BOITNDAEY. 



* * * * Gbiseleeia, 

Crotos olasdulosum, Linn.; MicJix. Fl. 2, p. 214 ; Ell. Sk. 2, p. 648. Gciseleria glaii- 
dulosa, Klolsch. On the Eio Grande, near Eagle Pass ; Sckoit, Bigelow, (No. 638 Wright.) In 
the Btaminate flowers the calyx is 4-5-paTte(l, the petals 4-6, and the stamens vary from 4 to 8. 
The calyx of the fertile flowera is unequally 4-5-pai-ted. A common species in the southern 
and southwestern States, extending into Mexico and South America, 

In the herbarium of Berlandier are the following species of Croton which do not occur in any 
of the Mexican Boundary collections. 

Croton trichocaepum (n. sp.) : fruticosum ; foliis lanceolato-ovatis acuminatis vel acutis 
denticulatis supra glabriueculia suhtua canescente stellato-puheseentibus ; fiorihus dioicis, 
maeculis longe spicatis sub-16-andrie, petalis ealyce sequalibus ; fcemineis hrevispicalis, petalis 
5 angustis ealyce hrevioribus ; stylis profunde bipartitis ; fructihus hirsutissimis. Matamoras 
and San Fernando, Cohahuila ; Berlandier, Nos. 1503, 1540, 2244, 3003, 3040, and 3212 (in 
part.) A shrub apparently about 2 ieet high. Leaves 1^ to 2J inches long and half an inch 
to more than an inch wide ; (in Nos. 1503 and 3003 smaller and not acuminate,) obtuse, or 
somewhat acute at the base. Male spikes 2 to 3 inches long, the flowers on very short pedicels. 
Petals spatulate-lanceolate, ciliate with long hairs on the margin. Fertile apikes much shorter 
than the male ; the flowers sessile. Sepala acute. Petals lanceolate linear. Disk a narrow 
ring. Capsule hispid with long hairs, which fall off more or less when the fruit is ripe. 

Ckoton I'ENiciLiATUM, Vent.; H. B. K. Nov. Gen. & 8p. 2, p. 84, Tampico ; Berlandier, Nos, 
752 and 21f 2. " Plant 3-4 feet high." 

Oroton syrinGjBFOLIUM, S. B. K. I. c.,p. 67. Nos. Y45 and 2166, Berlandier. No. 744 seems 
to be the same, with smoother leaves. 

Gynamblosis monanthoqyna, Torr. in Marcy's Hep., p. 295. Croton monauthogynum, Michx. 
Fl. 2, p. 215. C. ellipticum, Nutt. Gen. 2, p. 225, (exel. syn.) Engelmannia Nuttalliana, 
Klotsch, I. c. Argothamnia herbacea, Spreng. syst. Z, p. 848. Eoeky places, Escondido Greek, 
Western Texas ; Bigelow. (Noa. 441, 946, 1762, 2376 and 2532, Berlandier.) Nos. fi49 and 
2059, Berlandier, are very poor specimens of what may be a variety of this plant ; but they difler 
in being more densely pubescent; the male flowera with 10-12 stamens, and at least some of 
the female flowers with three styles. 

EnEMOCARPiis SETiOBBUS, Benth. Bot. Sulph., p. 53, t. 26. On the sea beach near San Diego, 
California ; Parry, Sckott. Near San Felipe ; Emory. This plant begins to flower and even 
bear fruit when it has scarcely formed a stem and all its leaves are in roseate clusters, spreading 
flat on the ground. 

Aphoea humilis, Evgelm. <& Gray, PI. Lindk. ~l, p. 54. Gravelly hills along the Eio Grande 
from New Mexico downward to the Gulf; March to May; Bigelow, Seftott. San Antonio, 
Texas ; Thurber. (Nos. 643 and 1797, Wright.) Petals of the fertile flowers longer than the 
oblong glands. This and the next species differ from A. mercurialina and A, pilosissima in the 
fertile flowers bearing true petals besides the glands of the disk; the former alternate with the 
sepals ; the latter opposite to them. The hairs, in all the species are simple, and those of the 
leaves and branches are fixed by the middle. 

Aphora l^vis (Gray MSS.): glaberrima ; caulibus e hasi lignoso ramosissimis ; foliis oblongis 
obtusis hasi attenuatis; spicis axillaribus paucifloris (olio multum hrevioribus ; petalis in flore 
masculo lanceolatis calycem paullo superantibus ; in flore fceraiueo lanceolatia glandulis linearibus 
emarginatis sub-duplo longloribus. Western Texas ; Wright, No. 1798. Plant about a span 



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BOTANY, 197 

high. Leaves an inch long, tapering at the base into a short petiole. Spikes on short peduncles 
4 to 5-flowered ; commonly only the lowest flower pistillate. Very near the last species, but 
differing in being entirely smooth, aad in long narrow emarginate glands of the disk, 

Aphora lanceolata, Evgelm. & Gray, I. c. Seropbytum lanceolatum, Benth. I. c. Hierra de 
la Nariz, Sonora ; Schott. On the Gila ; Tliurher. Near A, humilis. 

AriiCRA serrata (n. sp.): annua, humilis, pilosa; caulee basi ramoso; foliis ohlongia hasi in 
petiolum brevem attenuatis serratia ; racemis androgynis paucifloria ; floris raasculi petalis calyce 
longioribus, foeminei petalia glandulis multo longioribus. Sandy plains near Port Yuma, 
California; ScJioti. On the Rio Gila; Parry. Stems moderately branching, 3-6 inches long. 
Leaves f-1 inch long, ovate, or elliptical-oblong, obtuse or acute, deuticulate-eerrate. Clusters 
or short racemes axillary, 4-5-flowered ; one or two of the flowers fertile, the others staminate. 
Petals of the staminate flowers rhombic-lanceolate, acuminate. Stamens 10, in 2 aeries, the 
filaments united into a alender column, at the base of which are 5 oblong erect glands. Fertile 
flowers 6-petalled, with 5 linear short glands alternating with the petals. Ovary trigastric, 
very hispid ; styles deeply 2-parted ; the divisions linear. Seed the size of a large piu-head, 
globose- oho vate, gray, corrugated. 

We have incomplete specimens (with staminate flowers only) of an allied species, or a variety 
of this plant, collected by Mr. Schott, on the Sierra del Tule, Sonora, It is much larger than 
A. serrata ; the branches are quite smooth, and the oblong remotely denticulate leaves (1—2 
inches long) are only sparsely hirsute. The racemes, or spikes, are axillary, 8-10-flowered, on 
peduncles about as long as the pi tides. Segments of the calyx narrowly lanceolate. Petals 5, 
rhombic- lanceolate, purple. Stamens 10, in two series, one above tbe other ; the filaments 
united into a column, with 5 oblong glands at the base. Another allied speciea, or probably 
variety, was found by Mr. Blodgett, in dry places, at Key West, It seems to be a prostrate 
annual, slightly hirsute, with ovate-oblong acute sub-seaaile leaves, which are either denticulate- 
serrate, or nearly entire. Clusters 4-5-flowered, Petals of the staminate flowers oblong, a 
little exceeding the calyx. Fertile flowers 5-petalled, the petals ovate, half the length of the 
calyx. Glands very short and emarginate. Seed sub-globoae, reticulate-corrugate. 

Aphora mercumalana, Nutt. in Amer. Phil. Trans, (n. ser.) 5, p. 174. Serophytum Drum- 
mondi, Benth. Bot. Sulph. p 53. Western Texas; Wright. (No. 2166, Berlandier.) — Var. 
pumila: nana, glabrescena, ebasiramosa; floris masculi petalis calyce paulo longioribus. Springs 
near Eagle Pass, on the Kio Grande ; Bigelow. The variety is woody at the base, as in the 
ordinary form. The stem is only 4-6 inches long. Leaves (in dried specimens) more or less 
tinged or clouded with purple. 

Aphora PILOSISSTMA. Serophytum pilosissimum, Benth. I.e. Southern Texas. (Berlandier, 
No. 2566,) This is the same as No, 322 of Drummond's third collection of Texan plants, 
Engelmann and Gray incorrectly refer this species to A. mercnrialina, Niiti. 

MoziSNA SPATHULATA, Orteg. Bee. 8, p. 105, t. 13. Var. sessiliflora. Hook. Ic. 4, 357. 
Gravelly hills and mountain sides, western Texas, Chihuahua, Coahuila, and Nuevo Leon ; 
fiowering throughout most of the season. Near Matamoraa ; Berlandier, No. 3210, (No, 1812, 
Wright.) An erect shrubby plant, with nearly simple rather stout branches. Leaves 1-2 
inches long, varying from linear to obovate-spatulate, and from obtuse or emarginate to acute. 
Flowers white, in small facicies, growing, with the leaves, from short wart-like spurs, Fruit 
ovate, acute, often (by abortion) 1-seeded, the thin papery endocarp separating from the exocarp. 
Seed the size of a large pea, glabrous. All tbe species of this genus are called by the MexicauR 



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J-y» UNITED STATES AND MEXICAN BOUNDARY. 

Sangre de Drago. Dr. Gregg, wlio found the present species in Chihuahua and other parts of 
Mexico, says it is astringent, and is employed hy the natives as a remedy for sore gums and 
loose teeth. Mr. Schott found on the Sierra del Tule and Tiuaja Alta, in Sonora, incomplete 
specimens of a Mozinna, which is probahly a variety or state of M. spathulata. The leaves are 
about one-third of an inch long, ohovate-cuneato, obtuse or emarginate, and the inflorescence ia 
more expanded, so as to be somewhat paniculate. The fertile flowers were not collected. 

MoziNXA CANESCENS, Bentk. Bot. Sulph. p. 52, t. 25. Near Quitobaquata, Sonora, August ; 
Schott. Our specimens are with staminate flowers only. I fear this is not sufficiently distinct 
from M. cordata, Ort 

Mozinna carbiophylla (n. ap.) : foliia late cordatis aeuminatis petiolatis crenato-dentatis ; 
floribus mascnlis paniculatia. Near Tucson and Sierra Verde, Sonora, June ; Sdiott. Plant gla- 
brous, apparently 1-2 feet high. Leaves about an inch long, broadly cordate, rather coarsely 
crenate-toothed. Plowers nearly as in the two other species ; only the staminate known. 

Chidosoolus bximulosus, Engelm. & Gray, PL Lindh. 1, p. 26. C. Michauxii, Pohl. fide 
Klotsck. Jatropha stimulosa, Mickx. Fl. 2, p. 216 ; Ell. Sk. 2, p. 649. Sandy places along 
the lower Hio Grande and westward to Sonora. (Nos. 1071 and 2501, Berlandier.) Variable 
in the size and outline of the leaves. 

Onidoscolus akgustidens (n. sp.) : herhaceus, pilis urentibua hispidus ; foliis ad raediam 3-5- 
lobatis, lobis grosse ineisodentatis, dentihus angustis elongatis acutisimia macronato-setaceia ; 
fioribus cymosis, centrali fceminei ; calycis laciuiis tubo subEequantibue. Santa Oruz, &c., 
Sonora ; Thurher, Schott. (No. 1809, Wright.) Plant one to two feet high, more or less hispid 
with stinging hairs. Leaves remarkable for the long narrow salient teeth, which terminate in 
a rigid bristle ; the lamina sometimes nearly smooth, but the petiole alwavs hispid. Plowers 
as large as in 0. stimulosus, but the tube of the petaloid calyx much shorter. Stamens 10 ; 
the filaments monadelphous about half their length, in two series of fivt* each ; the interior 
about one-third longer than exterior. At the base of the column are five small sessile glands. 

Jatropha multifida, Linn. Sp. p. 1429 ; II. P. K. Nov. Gen. & Sp. 2, p. 105. J. macrorhiza, 
Bentk. PI. Hartw. p. 8 ? Plains along the Eio Grande from the Presidio del Norte downward 
to Neuvo Leon, and westward to Sonora, May-July. (No. 1808, Wright.) Plant about a foot 
high, herbaceous from a thick root or rhizoma. Leaves 3-5-lobed, the lobes oblong-lanceolate, 
laciniate and toothed, the teeth very acute and pointed with a bristle. Stipules deeply laciniate 
with subulate segments. Flowers in terminal cymes, the alar one of the primary nsually fertile, 
the others staminate. Bracts ciliate. Staminate Fl. Calyx deeply 5-parted ; the segments 
laciniate-toothed. Corolla white, about twice as long as the calyx ; segments obovate-spatulate. 
Stamens 8, nicmadelphous below, 3 of them longer than the other 5 ; the column with 5 erect 
cuneate emarginate glands at the base. Fertile Fl Calyx and corolla nearly as in the 
staminate, except that the segments of the former are more laciniate. Style 3-parted nearly to 
the base ; the divisions 2-cleft at the summit. Capsule about half an inch in diameter, nearly 
smooth, (granular when dry.) Seeds oblong, light brown with purple spots. Mr. Thurber 
informs us that the Mexicans know the seeds of this species to be purgative. 

Jairopra Beklandiem (a. sp ): glabra ; foliis radicalibus longissime petiolatis glaucis pal- 
matim S-f-partitis, segmentie oblongia vel obovatis laciniato-dentatis vel pinnatifldo-incisis ; 
calycis segmentis ovatis integris corolla multo brevioribus ; floribus masculis 8-andris. On the 
Lower Eio Grande; Wright, No. 651. Plains near Eagle Pass and Piedra Pinta ; Bigelow, 
Sc/wtf. Monterey, Neuvo Leon; Dr. Edwards. (No. 1810, Wright. No. 2060 and 3124, 



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BOTANY. 199 

Berlandier.) g em atout a foot high, from a large oblong-conical starchy root. Leavers divided 
nearly to the base, the lacini^ often linear and very narrow ; petioles 2-6 inches long. Flowers 
in terminiil cymes, the alar one only fertile. Corolla purple; the segments obovate- oblong. 
Stamens moaadelphous only near the base, 5 of them a little shorter than the other three ; 
anthers linear, elongated : 5 glands at the base of the column. Htyles short, united below ; 
stigmas somewhat thickened, 2-lobed. 

Janipha Loeflingii, H. B. K. Nov. Gen. dt Sp. I, p. 107. Jatropha Janipha, Linn. Ringgold 
Barracks, lower Eio Grande, June ; Schott. Sterne slender, glabrous. Leaves deeply 3-5-lobed, 
the lowest lobes smallest and entire, the others (especially the middle one) more or less pan- 
duriform. Staminate flowers 8-15 in a terminal raceme ; the pedicels scarcely one line long ; calyx 
tubular and at length salverform ; the segments linear-oblong. Stamens 8 ; filaments free to the 
base ; 5 of them shorter than the other ; 5 small glands at the base of the filaments. Tertile 
flowers 2, at the base of the staminate raceme, their pedicels at length 6-8 lines long and reflexed. 
Calyx 5-parted to the base. Ovary globose, smooth, sometimes with 1 or 2 filaments bearing 
1-celled anthers. Styles 3 short ; stigmas dilated, cristate-lobed. Eipe fruit not seen. This 
is intermediate between J. Loeflingii and J. Yuquilla, and all are probably forms of one species. 

Janipha Mahioot, H. B. K. I. c. : var. angustiloba : foliis S^partitis, laciniis anguste lanceolato- 
linearibus integerrimis vel undulatis acntis. Santa Cruz and Tubac, Sonora, June— July ; 
Schoit. Near Monterey, Neuvo Leon ; Gregg. No. 1811, Wright. Plant smooth, 1-2 feet from 
a somewhat shrubby base, branching above. Leaves mostly 5-parted ; the segments 2-5 inches 
long and 1^-5 lines wide, usually somewhat undulate and sometimes approaching to pandurl- 
form. Stipules minute and subulate. Eacemes 15-20-flowered ; the 2 lowest flowers fertile, 
the others staminate. Calyx of the staminate flowers greenish- white, broadly campanulate, 
5-lobed about half way down ; the lobes oblong. Stamens 10 ; filaments distinct, 5 of them 
longer than the others ; 5 glands at the base of the column. Calyx of the fertile flower 5-parted 
to the base. Pistil nearly as in J. Loeflingii. Fruit 3-lobed, the carpels l-seeded. Seeds 
A\ lines long, gray, mottled with dark purple. This diflfers from any form of J. Manihot in our 
herbarium, but it seems hardly a distinct species. 

Acalypha Caboliniana, Walt. Fl. Oar.p. 238; mi Sh. ^, p. 645. Eavines near Presidio del 
Norte, and near the Copper Mines, August— September ; Bigelmi;. Annual. Staminate spikes 
axillary, 3-4 lines long ; fertile ones terminal 2-3 inches long. Involucre cut into deep narrow 
segments. Capsule echinate with short soft spines. Very near A. polystachya of the West Indies. 

Acalypha Virginica, L. 8p. p. 1423 ; Torr. Fl. New Yorh, 2, p. 173. Near the Copper Mines, 
New Mexico ; Bigelow. No. 1817 and 1818, Wright. Difi'ers somewhat from the eastern plant 
in the longer spikes and the more foliaceous terminal bracts. 

Acalypha gbacilbns. Gray, Man. Bot. ed. 2, p. 390. Western Texas, Wright. More common 
southward and westward than the last. 

Acalypha PHLEOiDES (Cat!. ^): suffruticosa ; foliis ovatis subsessilibus serratis ; spicis terminali- 
bus solitariis androgyonis superne masculis inferne fosmineis ; involucris 5-dentatis. A. phleoides, 
"Oav. lo. 6, J). 48,(. 569,/. 2;" exPers. 8yn. 2, p. 581. Hillsides, western Texas, Chihuahua, Co- 
hahuila, Sonora, &c., April— July. No. 1815 and 1816, Wright. Stem apparently prostrate 
with erect hairy branches about a foot high. Leaves an inch long, rather acute at both ends, a 
little hairy above and underneath. Stipules subulate, very small. Spikes terminating the 
branches. 1-2 inches long, the summit usually staminate and much more slender tlian the fertile 



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200 IKITED STATES AXD MEXICAN BOUNDARY. 

portion. Bracts of the fertile flowers coarsely and acutely 5-toothed, sparingly ciliate with 
rigid hairs. Capsule hispid at the summit. According to Dr. Gtregg this plant is used by the 
Mexicans as a wash for sore gums and loose teeth, and as an application to ulcers. It is doubt- 
iiil whether this is A. phleoides, as that species is said to he an annual. Our plant seems to be 
nearly allied to A. prunifolia, but that also is described as an annual. 

AoALYPHA HEDBEACEA (n. sp.): c caudice lignoso multicauHs, molUter incano-puhescens sen 
villosa; foliis orbiculari-reniformibus longepetiolatis crenato-dentatis ; spicis dioicia (rarissime 
monoieis) terminalibus pedunculatis, stamineis gracilibus fcemineis brevibus crassis, bracteis 
obtuse 9-10-deiitati8. Damp places, valley of the Pecos ; Bigdoiu. Neuvo Leone and Chihuahua, 
Gregg, Edwards. May— September. (No. 648, 1813 and 1814, Wrig?it liio i1S,Lit^dheimer.) 
Plant slender, prostrate, branches 6-15 inches long. Leaves 6-10 lines in diameter, mostly 
broader than long, truncate or cordate at the base. Staminate spikes 6-10 inches long ; the 
peduncle often 1-2 inches long. Fertile spikes half an inch long. Bracts cucullate. Fruit 
hispid. — In one of Mr. Wright's specimens (No. 1813) there are sessile axillary few-flowered 
fertile spikes, and others that are androgynous, consisting ot a short pedunculate staminate 
spike with a single fertile flower at the base, 

AoALYPHA EADiAXS (n. sp.): 6 basl suffruticosa multicaulis, pilis longis patentissimis villosa; 
foliis longe petiolatis orbiculari-reniformibus inciso T-lS-fldis, lobia sublinearibus ; spicis dioicis 
terminalibus pedunculatis, stamineis ohlongo-linearibus, ftemineis crassis ; bracteia obtuse 9-10- 
dentatis. Western Texas, especially along the lower Kio Grande, and in the adjoining Mexican 
States. (No. 251, Coll. II,) Texas, Drummond. No. 649, Wright. No. 636, lOTO, 2046, and 2500, 
Berlandier ) This is certainly very near the last, but I have not seen intermediate forms. It 
it is easily distinguished by its hairiness, and the radiafely lobed leaves. 

Tragia URTicfflFOLiA, Mickx. Fl. 2, p. 176 ; Ell. Sh. 2, p, 564. T. betonicfefolia, Nutt. I. c. p. 
173. T. brevispica, Engdm. <fc Gray, PI. Lindh. 1, p. 54; Scheele in Linncsa, 25, p. 486, 
Rocky ravines and hill sides, New Mexico, and western Texas, along the Rio Grande to the 
Gulf. (No. 307, Coll. 11. Texas, Lindh. No. 260, Coll. III. Texas, Drummond. No. 1793, 
Wright.) No. 647 of Wright's earlier collection in the same plant with the flowers and fruit in 
an abnormal state. I can find no sufficient characters for distinguishing this plant from T. 
urticEefolia, Mx. The stems are at first upright, but at length prostrate or sometimes even a 
little twining. The length of the spikes is very variable. In specimens from Arkansas the 
fertile flowers have the calyx 6-petalled, and the staminate 4-5-sepalled, 4-5-androus. The 
stems are somewhat woody at the base. 

Tragia urtic^folia, var.? laciniata : foliis pedatim 3-partiti8, laciniis pinnatifidis, intermedio 
longiore. Sonora, Mexico, Thurher. No. 1795, Wright. Stem apparently prostrate, 12-16 
inches long, paniculately branched, hirsute. Leaves-I-lJ inch long, the lower ones on short 
petioles, upper nearly sessile, pedately divided to the base, pinnatifldly cut into acute segments or 
teeth ; the lateral lobes sometimes unequally 2-cleft. Racemes terminating the short branches, 
few-flowered, the lowest flower fertile. Calyx and fruit as in the ordinary form. Fruit. A 
remarkable variety, approaching (by the description) T. cannabina. Mr. Schott collected in the 
northwestern part of Sonora specimens of a Tragia that seems intermediate between T. urticie- 
folia and this plant. The leaves are oblong-ovate and coarsely toothed, and part of them are 
2-lobed at the base or somewhat halberd-form, showing the tendency to become pcdate. 

Tragia ramosa, Torr. in Ann. Lye. New York, 2, p. 245. T. angustifolia, Nutt. I. c. T, 



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UOTAKV. _ 201 

scutellariiefolia, Sdtede, I. c. Gravelly hiUs ol' the Limpio; Bigelow. Ravines of the Organ 
inonntains, April ; Parry. On the upper Eio Gfrande, New Mexico; Fendler, No. 776. Perhaps 
only a var. of the last. It differs chieBy in being much smaller and erect, with the leaves 
scarcely at all cordate. Var.? leptophylla: foliis linearibua integris vel remote denticulatis.— 
Near Howard's Springs; Bigelow; No. 1796, Wright. Plant woody at the base, about a spaa 
high, and branched from the base. Steni and branches sparingly hirsute. Leaves 1-1^ inch 
long and 1-2 lines wide. Spikes few-fl )wered ; the lowest flowers fertile. Flowers as in T. 
ramosa, etc, 

Tragia uRENs, Z^m. Sp.p. \Zn;Ell. Sk. 2, p. 564. Hills on the lower Rio Gmn>X.i- SchoU. 
Tyeia myiuc^folia, Schede in Linnma, 25, p. 581. Bocky hill sides near the Pecos and Live 
Oak creek, also on the Flounce mountains, etc. ; western Texas and Chilmahua ; Sigeloiv, Sclioit. 
San Felipe, California; Parry. No. 1806 and 1807, Wright. An irregularly branched 
homely shrub, 3-10 feet high, of a grayish green color, clothed with a mi ante stellate pubes- 
cence. Sterile flowers on short pedicels which are aggregated upon spurs or short branches and 
articulated at the base. Sepals mostly 3, sometimes 4. Stamens 3-20, the filaments distinct, 
witli minute alternate capitate pedicellate glands at their base. No abortive ovary. Fertile 
flowers sessile. Fruit tricoccous or by abortion dicoccous. 

Sapium? annuum {n. sp.) : annuum, humile ; foliis rhombeo-oblongisacnminatisbasi attenuatia 
prominenter trinervibus spinuloso-dentatis rigidulis egiandulosis. Stillingia spinulosa, Torr. 
in Emory's Rep. p. 151. In the sandy desert west of the Colorado, California ; Majvr Emory. 
Near Fort Yuma; Schott. Var. dentatum: foliis oblougis vol obovato-oblongis obtusis vel acu- 
tiusculismembranaceis acute dentatis, dentibua inermibus,veni8 incouspicuis. Wet ravines, Ea-^le 
Pass, Lower Kio Grande; Bigelow, Schott. Valley of the Almo ; Parry. Near Monterey, 
Neuvo Leon; Dr. Edwards <& Major Eaton. These two forms differ considerably, but they 
probably belong to one species. They are both undoubte liy annual. 

Sapium sylvaticum. Stillingia sylvatica, Linn. Manl. p. 126; Ell. Sk. 2, p. 560. Var. lmea- 
rifolia: foliis anguste-linearibus argute serrulatis, serraturis glandulosis. Kavinea on the 
San Pedro river and on limestone rocks higher up on the Rio Grande ; Schott, Bigelotv. Leaves 
2^-3 inches long, 2-3-line8 wide, somewhat coriaceous. Spikes androg- nous, 1-2 inches long, 
2-4 of the lowest flowers fertile. Staminate flowers 5-10 on short pedicels under each scale or 
involucre. Calyx hemispherical, 2-Hpped ; the border slightly crenulate. Stamens 2 : filaments 
united at the very base, 

Sapidm salicieoudm, M. B. K. Nov. Gen. (£ Sp. 2, p. 65. Between Rayon and Ures, Souora; 
'I hurber. ' ' A shrub 10-12 feet high with somewhat erect and slender branches, and deep green 
foliage." Leaves 1^-2 inches long, and 3-4 lines wide, somewhat coriaceous, rather acute 
remotely denticulate, the upper side (when dry) of a verdigris green color, often with 2 minute 
glands at the base. The specimens are in fruit. The capsule is solitary and apparently axillary, on 
a short peduncle, smaller than in S. sylvatica, but in other respects similar, and without any 
remains of the staminate spike. On the Sierra de la Nayoa, in Sonora, Mr. Schott gathered 
specimens of what seem to be the same plant. The leaves are similar in form, but a little wider 
more membranaceous and rather obtuse, or sometimes even emarginate. The staminate spikes 
are without any fertile fiowers at the base. There are 10-20 sessile flowers under each scale or 
involucre. The calyx is manifestly 2-Hpped, and the stamens seem to be constantly two, the 



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202 UNITED STATES AND MEXICAN BOUNDARY. 

filaments of which are scarcely united at the base. Fertile flowers not seen. Fruit solitary 
and resembling that of S.salicifolium, exceptiuheing larger. The plant seems to he dioecions. 

The genera Sapium and Stillingia are, we think, very properly united by Klotsch. Long 
ago Ad. Jussieu remarked (Euphorb. p. 50) that they were scarcely distinct and ought perhaps to 
form one genus. The calyx of the staminate flowers is the same in both, although it i8 described 
as tubular in the latter. The number of staminate flowers under a single bract or involucre is 
not a sufficient distinction. There are several in S. sylvaticum and S. salieifolium ; but in S. 
annuum and S. ligustrinum they are solitary. 

SiMMONDSiA Californica, Nutt. in Hook. Lmd. Jour. Bot. 3, p. 400, 1. 16 ; {Tab. XLIX,) Dry 
hills along the Gila and westward to San Diego ; not uncommon in various parts of southern 
California. Nuttall did not see the fruit. This is about three-fourths of an inch long, ovale 
and obtusely triangular, abruptly pointed, and somewhat resembles the gland of an acorn. At 
maturity it splits into 3 valves ; the dehiscence being locuHcidal. It usually contains but a 
single seed, which is conformed to the cavity of the pericarp. The embryo is wholly destitute 
of albumen. The cotyledons are very thick and fleshy, and they cohere together, so that they 
only separate after considerable boiling. The radicle is minute and superior. The nuts have 
somewhat the flavor of filberts, but the after-taste is rather nauseous, and they are apt to cause 
purging. Mr. Nuttall thinks this genus is very clearly allied to G-arrya, but it differs in several 
important characters. Lindley places it, withoutaremark,inEuphorbiace^,ai;d we are inclined 
to follow him, notwithstanding the absence of albumen. 

Suborder BATIDE^. 

Batis maritima, Linn.; Torr. in Smithson. Oontrib. 6, p. t, 11. On the beach, at Brazos 
Santiago ; Schott. 

Batis Oalifoenica, Torr. I. c. Salt marshes near San Diego, California ; Parry. We have 
received no more specimens of this plant since it was first described, and are by no means certain 
that it is specifically distinct from B. maritima. 

UETICACE^. 

Ubtica urens, Linn. Spec. 2, p. 284 ; Miguel in Mart. Fl. Bras, fasc. 12, p. 195, t. 67. In the 
streets of Monterey, California, where it has manifestly been introduced, May ; Parry. Wet 
ravines near the Organ mountains, New Mexico ; Bigdow. 

Uetica purpgrascens, Nuit. in Trans. Amor. Phil. Soc. {n. ser.) 5, p. 169 ; Cfray, Man. ed. 2, 
p. 398. San Antonio, Texas ; Thurber. Near Eagle Pass on the Eio Grande ; Bigdow. It is 
commonly simple, but Dr. Bigelow's specimens are branching from the base. 

URncA GRACILIS, Ait. Hort. Xew 3, p. 341 ; Gray, I. c. Banks of the Limpio, July ; Bigelow. 
California ; Bev. A. Fitch. Stem 4-5 feet high. Leaves often ovate and sometimes slightly 
cordate, coarsely toothed. 

BOEHMBKIA CYLINDEICA, WHld. Sp. 4, p. 340. Banks of streams and wet thickets, western 

Paribtabia dbbilis, Forat. 8. Floridana, Wedddl, Monogr. Urtic. p. 316. P. Floridana, 
Nvit. Gen. 2, p. 208 ; Ell. Sk. I, p. 576. Bocky places along the upper Rio Grande and in 
Ronora March— May, (No. 1861, Wright.) The leaves vary from nearly orbicular to ovate- 



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BOTANY. 203 

oLlong. The narrower leaved forms approach P. Pe nn sylvan ica. Found in many parts of the 
world, but not in Europe. 

HoMDLUS LuPDLUS, Linn. 8p. 2, p. 1028 ; Torr. Fl. N. York, 2, p. 225, dc in Silgr. Sep. p. 
173 H. Americanus, USfutt. PL Gamb. in Jour. Acad. Phil. n. ser. 1, p 181. Banks of the 
Mimbres ; Bigehw. {No. 1860, Wright ) 

MoRus RUBRA, Linn I. c. p. 986 ; Mickx. /. Sylv. 2, t. 116. Common in western Texas, New 
Mexico, and Chihuahua; often flowering and bearing fruit when a low shrub. (No. 1859, Wright.) 
Nos. 2i98 and 2416, Be-clandier. The leaves are commonly abont two inches long, but those 
of vigorous shoots are sometimes 11 inches long and 8 inches In diameter. 

Celtb occidentalis, Linn. Sp. (ed. 2) 2, p. 1478 ; Michx.f. Sylv. 2, 1. 114 ; Torr. Fl. N. Yorh 
2, p. 167. 0. crassifolia, Lam. Western Texas and New Mexico. We quite agree with Dr. 
Gray in regarding C. crassifolia as a mere variety of this species. Some of our specimens show 
a transition to 0. Miss is sip pi en sis, Bose, (C. integrifolia, Nutt ,) which Dr. Gray suspected was 
not distinct. 

Celhs (Momisia) pallida (n, sp.) : ramis incano-puberulis ; spinia subgeminis rectis ; foliis 
ovfttis vel ovato-ohlongis pauci serratis integerrimisquepnberulis crassiusculis breviter petiolatis 
basi acutiusculis raro leviter cordatis ; cymulis polygamis iJ-5-floris petiolo paullo longiorihus ; 
hacca ovata laevi glabra. (Tab. L.) Common in western Texas and along the Kio Grande, 
from Fort Duncan to the Gulf, and west to Magdalena in Sonora. It is called Grangeno in Neuvo 
Leon. (No. 1858, Wright; No. 3021, Berlandier.) A shrub 6-10 feet high, with numerous 
flexuous spreading branches. Thorns from 2 or 3 lines to an inch in length. Leaves 8-14 lines 
long, mostly acute, 3-ncrved, minutely pubescent and somewhat scabrous on both sides. Flowers 
small, white ; the lower ones of the cymule mostly male, with a rudimentary pistil ; the ter- 
minal one perfect. Styles thick, divaricate, cleft nearly half their length, the undivided portion 
rather shorter than the ovary. Berry about three lines long, orange, yellow, and red, with an 
acid pulp, which is edible but rather astringent. This species seems to he nearest the Brazilian 
C. orthocanthos, Planch. 

Ulmus crassifolia, Nutt. in Trans. Amer. Phil. iSoc. (n. ser.) 5, p. 169. U. opaca, Nwtt. Sylv. 
1, p. 35, t. 11. On the banks of rivers, from San Antonio, Texas, to the Pecos river ; Schoit. 
Thurber. (No. 1857, Wright; No. 346, Coll. II, Texas, Drummmd; No. 2546, Berlandier.) Mr'. 
Nuttall, in his Sylva, has overlooked his much earlier name and description of this species. 

Ulmus alata, Michx. Fl. 1, p. 173 ; Michx. f. Sylv. 2, i. 127. Near Eagle Pass on the Rio 
Grande ; Bigehw. 

SAURACEiE. 
AsEMOPSB Calieornica, Nutt. in Tayl. Ann. Nat. Hist. \,p. 136 ; Hook. & Am. Bat. Beechey, 
p. 390, t. 92. Wet places, San Luis Key, California ; Parry. Western Texas, Mew Mexico, 
and Chihuahua, April — July. 

CERATOPHTLLACE^. 
Cekatophyllum DEMEKtUM, Liun. Sp. p. 1409. In runniug water, near the southern bound- 
ary line of Upper California; Parry. 

BETULACE^. 

Alkds viridis, DC. Near gan Diego, California ; Parry. Our specimens are without fruit. 
Dr. Parry informs me that this is a common species in California, and that it sometimes becomes 



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204 UNITED STATKS AND MEXICAN BOUNDARY. 

a tree 40 fet-t ia height, with a trunk 8 inches in diameter. We have specimens of another 
Alnus, collected in California hy lUv. A. Fitch, which seema to he A. rhombifolia, NuH. It 
differs from A. serrulata in the coarse teeth of the leaves, and from all other North American 
species in the long acute haee of the leaves. 

Alntjs oelongifolius {n. sp.) : ramia glahris nitidis ; foliis oblongo-lanceolatis utrinque 
acutis suhduplicato-serratia supra glaberrimis subtus minntissime pubescentlbus utrinque viridi- 
bus ; nuculis apteris. Banks of the Mimbres and near Santa Barbara, New Mexico. (No. 1864j 
Wright.) A tree 30 feet high. Leaves 2^-3^ inches long and 1-1| inch wide ; unequally ser- 
rate, serratures glandular at the tip ; petiole about one-third as long as the lamina. Catkins 
somewhat paniculate, ovate. Nutlets ovbicular-obovate, without any trace of a wing. 

SALICACEJi:. 

Salts lucida, MuM. Var. anqustifolia, Anders. Salices Bor.-Amer. in Proceed. Amer. Acad. 
4. 8. lasiandra, Benth. PI Hartw. p. 335 ; Torr. Bot. Whippl. Eep. p. 138. Mountains of 
California, (the precise station not recorded ;) Parry. " A straggling shrub." 

Salix Wrightii, Anders. I. c. Borders of the Upper Rio Grande, in western Texas and Chi- 
huahua ; also near Lake Santa Maria. (No. 18T7, Wright.) A tree 15 to 25 ieet high. 

Salts lokgifolia, Muhl.; Anders. I. c. Between the Pecos and the Eio Grande, and westward 
to the lower Rio Gila. 

I have not ventured to name five or six other willows of the Mexican Boundary collections. 
Mr. Anderson is preparing a more complete account of this exceedingly diffienlt genus. He has 
shown that many of our Salices, until recently supposed to be different from any in the Old 
World, are identical with European species, or only varieties of them. He desires contributions 
of specimens from our botanists, that lie may be able to perfect bis contemplated work. 

PopuLts TEICHOCARPA, Tori\ in Book. Ic. S), t. 878. Borders of Santa Clara river, near Buena- 
ventura ; Parry. A tree 30 feet high, with smooth bark. This species is easily distinguished 
by the hairy fruit. 

Populus montlifeka. Ait.; Michx. f. Sylv. 1, p. 116, t. 96, /. 2. Borders of streams from 
western Texas and New Mexico to California. This is the ordinary cotton-wood of the West. 

FopuLUS TEEMUL0IDE8, Miclix. Fl. 2, p. 143 ; Michx. f. Sylv. I, p. 125, t. 99, /. c Hills near 
the Copper Mines, in fruit. June ; Bigelow. (No. 1870, Wright.) 

PopOLtrs BALSAMiFERA, L. ; Michx. /. Sylv. 2, p. 121, t. 98, /. 1. Banks of the Mimbres ; 
Bigdoio. 

PoPULUS ANGL'ETiFOLiA, James ; Torr. Ann. Lye. N. York, 2, p. 249 ; Nutt. Sylv. 1, p. 52, L 16. 
Near the Copper Mines of New Mexico and on the banks of the Mimbres ; Bigelow. This is the 
Narrow-leaved Poplar of Lewis and Clark's Travels. If is No. 81T of Fendler's N. Mexican 
Collection. 

PLATANACE^. 

Platanus kacemosa, Nutt. in Audubon's Birds, 1, t. 362, & Sylv. 1, p. 47, (. 15 ; Newberry 
Bot. WiUiamson & Abbott's Sep. p. 33, /. 10. P. Mexicana, 31oric. P. Californica, Benth. 
Borders of streams neat San Diego, etc., California; Parry. Guadalupe Canon, Sonora ; 
Thurher. A large tree, sometimes 50-60 feet high. Hartweg states that in California he tias 
seen it 80 feet high and 12 feet in circumference. 



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Platahus occidbntalis, L. Sp. 2, J). 999 ; Michx.f. Sylv. 1, t. 63. Devil's River valley, western 
Texas ; probably the western limit of this species ; Bigeloio. 

GARRYACEiE. 

Garrya elliptica, Lindl. But. Meg. t. 1686. Sandy places near Monterey, California ; Parry. 
A shrub, seldom more than 5 or 8 feet high. Both sexes occur in Dr. Parry's apecimena. 

Gaerya "VVnraHTn, Torr. Bot. Whipp. Jiep. p. 136. Hills near the Co|'per Mines, New- 
Mexico, abundant ; July. 

Garrya LiNDHErMERi, Torr. I. c. Western Texas and New Mexico; Wright. El Paso; 
Thurier. 

JUGLANDAOEiE. 

JuoLANS EUPESTEIS, Engelm. ; Torr. Bot. Sitgr. Rep. p. 171, (. 15. J. pyriformig, Llebm. 
Vidensk. Meddel. Kjobenh. for 1850, p. 80? Common on the gravelly borders of streams in 
weatern Texas from Devil's river to the Peeos and Limpio ; also at the Copper Mines, (No. 
1029 and 2459, Berlandier.) The var. major, Torr. I. c. t. 16, seems to pass gradually into the 
small-fruited form. They are fonnd together, and the variety occurs also in Sonora, At San 
Fernando, beyond Los Angeles, Dr. Parry found a Juglans in flower, which is probably a 
variety of J. rupestris. The leaflets are 11-13, ovate-oblong, rather obtuse and sharply serrate. 
He did not obtain the fruit. 

Carya oliv/EFORMIS, Nutt. Gen. 2, p. 221, Juglans olivaformis, Miclix. Fl. 2, p. 192 ; Michx. 
f, Sylv. 1, t. 32. Western Texas, near the Eio Grande ; Btgelow. The leaflets are only 9-11, 
and the nuts much shorter than ia the ordinary Pecan. 

CUPULIFER^. 

Castanea chrysophylla, Dougl. in Hook. Fl. Bor.-Amer. 2, p. 159 ; Uooh. Land. Jour. Bot. 
1843, t. 16. Near Monterey, California, where it is a bush, only 2-3 feet high. At Santa Cruz, 
in the same State, it becomes a tree, 50 feet high. The nuts are small, like those of the beech, 
but rounded on the angles. 

QuERCTis Gambelit, Nutt. PI. Gamh. I. e. p. 179 ; Torr. Bot. Sitgr. Rep. p. 172 ; Lietm. Querc. 
Neo.-Mex. & Calif, p. 169.* Mountains near the Copper Mines, New Mexico ; Bigelow. Lieb- 
mann relers to this species. No, 806, 809 and 810 b, of Fendler's New Mexican Collection. 

Quercus lobata, Nee in Anal, de den. Nat. 3, p. 270^ (fide Liebm. I. c. p. 172.) Q. Hindsii, 
Benth. Bot. Sulpk. p. 55 ; Torr. Bot. Whijyp. Hep. p. 138 ; Newberry in Paeif. R. R. Rep. Bot. 
p. 2^, fig. 5. Near Monterey and in other parts of California. A fine tree, allied to the white 
oak of the Atlantic States, remarkable for its usually long acorns, Q. lobata is only a form 
with shorter acorns. 

Ql'eecus tikctoria, var. ? Califoenica, Torr. Bot. WUppl. Rep. p. 138. Q. rubra, Liebm. in 
Benth. PI. Hariiv.p. 337, non Linn. Q. Kelloggii, Newberry, I. c. p. 28,/, 6, On mountains 
east of San Luis Key and San Diego, California ; Parry. A middle-sized tree. It is called 
black oak in California. The leaves when young are very downy underneath, and somewhat so 
on the upper surface ; but they are nearly glabrous late in the season. Sometimes the acorn is 
ehort and half immersed in the cup. 

TuLliehed in " OverRJgt (let Kgl. dsiielie Vi den skabc rues Selskaba FothfttiJliugtr og dets Medlemmera, i A^rct li^ji. 
Kjiibenliavn " 



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206 



UNITED STATES AND MEXICAN BOUKDARY, 



QuERCUS COCCINBA, var. ? MiCROCARPA ; foliis otlongis profunde sinuato-pinnatifidia utrinque 
glabris nitidisve, siaubus obtusis, lobie (utrinqne 2-3) parcedentatia, dentibus setaceo-acumiaatiH ; 
fructibus solitariis geraiuisque, glande oblongo-ovata apiculata. Kooky ravines near the mouth 
of the Pecos, and oq the Limpio : Bigelow. Oak Creek, Texas ; Schott. Differs from the 
common state of Q. coccinea in the considerably smaller and less lobed leaves, in the acorns 
being scarcely one-third as large, the cup not turbinate, and the gland longer in proportion to 
its breadth. 

QuEECUS NiQKA, Linn. ; Mickc.f. Sylv. \, t. 20 ; Torr. Fl. N. York, %p. 188, t. 105. Medina 
Greek, above San Antonio, Texas ; Parry. This appears to be the western limit of the Blaclc- 
Jach Oah. 

QuERCUS OETcrsiFOLia, var.? brbviloba: foliis subcoriaceis obovato- oblong is basi cuneatis, lobis 
brevibus obtusis supra viridibus subtus pallidis pubescentibus ; frnctibue sessilibus solitariia vel 
gemiuis, cupula depressa hemispherica, glande ohlongo-ovato obtusa.— Mountain gorges near 
Howard's Springs, western Texas ; Bigeloio. We refer this oak to Q. obtusifulia with much 
doubt, but it seems more nearly allied to that species than to any other. It differs, however, in 
its leaves being much smaller and far less lobed, more coriaceous and apparently evergreen. 
The acorns, too, are smaller and the cup more shallow, 

QcBRCUS DKDL'LATA, Torr. in Ann. Lye. N. Yorh, 2, p, 248, i. 4; & in Marcy'a Rep. p. 297. 
Q. Fendleri, Liebm. I. c. p. 170.— New Mexico, near the Eio Grande. (No. 805 and 807, Fendl. 
N. Mex. Coll.) 

QuERCUs viRENS, Ait.; Michx.f. Sylv. 1, p. 57, t. 12. Moist woods on the Gulf coast from the 
Brazos to the Eio Grande, also along the latter river as high as the Pecos and Live Oak Creek. 
At a distance from the coast it is commonly a shrub 4-6 feet high. The leaves vary from nar- 
rowly obloug to broadly ovate. On old trees they are mostly entire, but on yonng shoots they 
are often sharply toothed. 

QuERCUS Emorti, Torr. in Emory's Hep. p. 152, i. 9. Q. pungens, & Q. hastata, Liebm. I. e. 
p. 171. - Near the mouth of the Pecos and on the Limpio, Texas ; Bigelow, Parry. Chihuahua; 
Thurhtr. Sonora ; Schott d Copt. E. K. Smith.~A widely spread shrubby evergreen oak, with 
neat foliage and very small acorns. The small-leaved oak of Fremont, quoted by Liebraann 
under his Q. chrysolepis, seems to be a variety of this species. No. 664, Wright, belongs to the 
form called Q. pungens by Liebmann, in which the leaves are more deeply toothed or lobed 
than in the normal state. 

QuERCus AQRiFOLTA, Me in. Ann. de Oienc. Nat. 3, p. 281, fide Liebm.; Book. Ic. 3, t. 377. Q. 
oxyadenia, Torr. in Sitgr. Sep. t. 17, <£ Bot. Whippl. Rep. p. 138. Common on the mountains 
of California, from the Upper Sacramento to the southern boundary Hue ; Parry. East of San 
Diego Dr. Parry saw trees of this oak which were 30 or 40 feet high. When growing singly, 
it has a round top like the Live Oak, throwing out branches a few feet from the ground and 
extending 30 feet or more from the trunk, 

QuERCUS OELONQiFOLiA, Torr. in Sitgr. Pep. p. 173, (. 19. Q. grisea, Lielm. I. c. p. 171. 
Mountains of the Limpio, Texas (Bigelow), and westward to the range east of San Diego, Caii- 
fornia ; Parry. In Texas and western New Mexico this oak is commonly a shrub 6-15 feet 
high ; but in California it sometimes attains the height of 20 or 30 feet. It has pale bark and 
spreading branches. The acorns vary considerably ia form. To this species I refer No 665 
and 1866, Wright. 



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BOTANY, 



207 



QuERCUS CHRYSOLBPis, Lichm. I. c. p. 173; Benth. PI. Hariw. p. 336. Q. crassipocula, lorr. 
in Pad/. R. Road Expl. &,x>. 365, t. 9. Q. fulvescens, Eellogg in Proceed. Calif. Acad. Nat. 
So. 1, ». 67 (fc Tl ; Newherry I. c. p. 27, /. 5. Mountains of Caliibrnia, from Oregon to the 
Bouthern boundary line. An evergreen oak, 30-40 feet high, with pale bark. The heart-wood 
18 dark-colored, and it is said to be good timber. The acorns are often of great size and the 
cups extremely thick, as represented in my figure of Q. craasipocula, but sometimes not larger 
than those of the Live Oak (Q. virens). We adopt Liebmann's earlier name for this beautiful 
species. 

QuEEcus DUMOSA, Mctt. Sylv. 1, p. 1? Near San Diego, California; Parry. A shrub, 6-8 
feet high, and very densely branched. The leaves are sempervirent, ovate, and 8-10 lines long. 
Our specimens accord well with Nuttall's description ; but he did not see the acorns. These are 
sessile, solitary and in pairs, about three-quarters of an inch long ; the cup hemispherical ; the 
gland ovate-oblong, tapering to a point and scarcely more than one-third of an inch in diameter 
at the base. Dr. Parry states in his notes, tliat the leaves are sometimes larger and oblong. 

QuERCUS ACUTiDEKS (u. sp.); foliis oblongis coriaceis basi acutiusculis vel cuneatis inequaliter 
grosse dentatis, dentibus cuspidatis pungentibus supra glabris nitidulis subtua pallidis minute 
tomentosis; fructibus sessilibus solitariis; cupula hcmispherica, squamis inerassatis; glande 
oblongo-ovata. (Tab. LI.) Near San Luis Eey, California ; Parry.—" Generally a low shrubby 
bush; but sometimes a tree 20 feet high." The leaves are 1^-2 inches long and 8-10 lines 
wide. The acorns aro more than an inch long and much resemble those of the White Oak (Q. 
alba). 

QuEECUS coNFEETiFOLiA, H. B. K. PI. JEquin. 2, p. 53, (. 94? Near the Copper Mines, New 
Mexico; Tkurher; No. 1869, Wright. Sierra del Pajarito, Sonora ; Sckott. San Francisco 
mountain ; Captain E. K. Smith.— A small tree. Liebmann seems to have referred it to Q. 
cinerea, as he includes that species in his list of New Mexican Oaks (doubtless of Wright's 
collection) which he examined in the herbarium of Sir William Hooker, and Mr. Wright found 
no other Quercus in New Mexico resembling Q. cinerea. Our plant has thickly coriaceous, 
lanceolate, acute leaves, which are 3-4 inches long, and from three-quarters of an inch to nearly 
an inch broad. They are commonly entire and revolute on the margin, but occasionally show 
1-3 minute teeth, nearly smooth and pale green above, very densely yellowish-tomentose 
underneath. The acorns are nearly sessile, solitary and in pairs ; the cup hemispherical with 
broad, obtuse, pubescent scales, and the unripe acorn is ovate. Q. cinerea differs in its much 
thinner non-revolute leaves, and thin pale pubescence. The acorns also seem to differ, but we 
have not seen the ripe ones of Q. confertifolia. 

KAFFLESIAS^. 

PiLOSTtLES Thueberi, Gray, PI. Thurh. in Mem. Ainer. Acad. n. ser. 5, p. 326. (Tab. LIl.) 
On a mountain near the Gila, June, parasitic on the branches of Dalea Emoryi ; Thwrh&r. 
CONIFEEiE 

EPHEDaA ANTisiPUiLiTiCA, iserland.; C. A. Meyer, Ephedr. 101, ex Endl. Syn. Conif. p. 263. 
Western Texas, from the Nueces to the Rio Grande, and from Frontera to Eagle Pass, April, 
May. San Diego, California ; Parry. RanconadoPass, Cohahuila ; Thurher. Between Mapami 
and Guajaquilla, Durango; Gregg, (No. 1882 and 1883, Wright.) The Mexicans call the plant 



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208 IIMTED STATES AND MKXICAN BOUNDAEy. 

Tepopote and CftiiaUlla, and use a decoction of it as a remedy for gonon-Vitea. It. ts a shrub 
about two feet bigh with numeroua branches, the aheaths of which are abort, 2-3-cIeft, the divisions 
lanceolate or suhnlate, apreading or recurved, at length deciduous. Sterile aments opposite or 
aggregated at the nodes. Anthers mostly 4. Fertile opposite, 1-2-seeded, The abeatha of 
the ament mostly 4, deeply 2-cleft and somewhat fleshy. Seeds smooth, when in pairs flattened 
on the face, when solitary they are larger and obtusely triangular, nearly twice as long as the 
inner acales. Tube of the micropyie very obliquely truncated. 

There are numerous specimens in the Mexican Boundary Collections, of an Ephedra, (bund at 
Frontera and near Doiia Ana, which may be a distinct species, but I suspect it is an abnormal state 
of E. antiaiphilitica. It is a shrub of 3 to 5 feet in height. The fertile aments are ovate-oblong, 
and instead of four decussating pairs of connate thiclcish, or at length succulent scales, there 
are Irom 16 to 20 very broad, entire, thin and membranaceous scales, which are distinct, contracted 
into a short stipe at the base, and irregularly inserted on the axis. They are at first loosely 
imbricated, but at length more or less spreading. The seed (immature) is ovate with a tapering 
point, and except the long obliquely truncated micropyie, is wholly covered with the scales. 

Another Ephedra occurs at Fronteras, and it has also been found at Ojo de Vaca in Chihuahua, 
by Mr. Thurber, It resembles the one just noticed, but the scales, though equally numerous 
and arranged in the same manner, are smaller and leas membranaceous. They are also minutely 
erose- serrulate. The seeds, however, are roughened with minute points which are sometimes 
disposed in short transverse rows, bo that, unless pretty highly magnified, they look like 
wrinkles of the testa. The micropyie is conspicuously exserted beyond the scales. There are 
usually but two seeds in each fertile ament, but not unfrequently three. The arrangement of 
the scales of the fertile aments in these two Ephedra! is so much at variance with the character 
of the genus, that it seems most probable they are abnormal forms, 

PiNUS EDULis, Engdm. in Wisliz. Rep. p. 88 ; Torr. in Bot. Sitgr. Rep. p. 173, (. 20, <& in 
Boi. Whippl. Rep. p. 140. P. Fremontiana, Gord. in Jour. Hort. Soc. Lond. 4, p. 293, oum 
ic. xyl.; exd. Syn. Endl. & Terr. Mountains of western Texas, near the Kio Grande, New 
Mexico, Chihuahua, and Sonora. (No. 1889, Wright; No. 830, Fendler ; New Mexico.) The 
cones and nuts greatly resemble those of the next species. The leaves are almost always in 
pairs, very rarely in threes. Gordon, in the work just quoted, refers this species to P. mooo- 
phylla, Torr. d Frem., the name of which, he says, was changed to P. Fremontiana by Pro- 
fessor Endlicher, {Syn. Conif. p. 183,) because that botanist having " afterwards examined more 
perfect specimens, found that the leaves were in twos and threes, and that the solitary leaves 
arose from Dr. Torrey's specimens being gathered from stunted plants." Now, we find that 
Endlicher in his Synop. Conif. has no remarks of this kind. His entire description is taken 
from mine in Fremont's 2d Eeport ; but he regards what I call a single leaf, as consisting of 
two uirited leaves. Col. Fremont found extensive forests of the tree in bis first expedition, as 
well as in his journey of 1853-'54. Dr. Bigelow also found it in Whipple's expedition on the 
mountains of California, but in consequence of an oversight it was not included in the Botanical 
Report of that expedition. The characters appearing to be so constant, I retain the species, and 
wait for additional observations on the plant in its native places of growth. It would be de- 
sirable, also, to test the constancy of the species by cultivation. Gordon's figure (I. c.) repre- 
sents the ordinary state of P. edulis. 

PiNUS Llaveana, Scheide d: Deppe in Limia-a, 12, p. 488. P. cemhroides, Newberry, in Pacif. 



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ROTANY. 209 

Railroad Rep. 6, (Sot) p. U, cum w. xybg. nnii Zmc. (Tablb LIU.) On the mountains ea.t 
of San Diego ; Parry. " A tree 30 op 40 feet liigli, and often 12 to 18 inclies in diametep, witli 
a pound, even head. The young trees remapirahly symmetrical, like some cedaps, with the 
bpoad base posting on the gponnd, the tpunlt and bpanchos heing completely hidden hy the 
dense foliage. The uppep bpanches ape usually loaded with cones." The leaves ape mostly in 
foups, hut sometimes in thpoes, and often in fives. They are cpowded towards the summit of the 
hpanches, IJ to 2 inches long, and a little cupved. Cones about 2 inches long, globose-ovate, 
disposed neap the extpcmity of the last year's gpowth, and ape at a tight angle to the bpanch. 
They ape often somewhat gibbous, the convexity being upwapd. The scales ape few, with the 
summit obtusely pypamidal. Seeds obovate, wingless, large fop the size of the cone, with a thin 
fpagile shell, and an edible kepnel. The Indians collect lapge quantities of them for food. 
When fresh and slightly toasted they ape very palatable. There can he little doubt of this 
being distinct from the Finns cembpoides of Mexico. The leaves of the lattep are shoptep and 
constantly in thpees, and the cones ape thpoe op four times larger, with much mope numepous 
scales. 

PllTOB poroiBOSA, Dauyl.; Newberry, I. c. p. 36, e«m ic. xyhg. V. Engelraanni, Torr. in Bat. 
Whif^. Rep. p. Ml. P. brachyptera, Engtlrx. in Widi,. Rep. p. 89. Mountains near the 
Copper Mines, New IMexico. The leaves in some of the specimens ape ten inches long. Dp. 
Newbeppy, who had abundant opportunity of studying the forest trees of Kew Mexico, Califopnia, 
and Opegon, in theip native place of growth, has clearly shown (as we think) that P. brachyptera, 
Sngelm., is identical with the earlier published P. ponderosa, Dougla,, to which species he also 
pefeps P. Benthami, Hartw., and P. Beordsleyi, Murr. in Edint. Sew Phil. Jour. 1855, p. 286. 
PlNUs Muaicili, D. Don in Linn. Trana. IV, p. 441 ; iidf. in Jour. Hart. Soc. lLi. i, p. 
216, c»m io. xylog. P. Edgapiana, Hartw. I. c. 3, p. 217. (TAaLB LIV.) Near Montep'eyj 
Califopnia ; Parry A small tree, seldom more than 15 op 20 feet high. Leaves of a deep vivid 
green. Oup cones (which ape, perhaps, not (luito mature) are smaller than the one figured in 
the Hopt. Tpans. 1. c. 

Pmns CnmuAHOASA, Eru/elm. in Wisliz. Rep. p. 103? Hills at the Coppep Mines, New 
Mexico; Bigehw. (No. 1888, Wright.) Oup specimens nccopd well with Dp. Engeln'iann's 
description, except that the apex of the scale, instead of being pointless, is armed with a small 
recupved prickle ; but this is very fpagile, and may have been pubbed off in the specimens 
collected by Wislizenns. The cones (not mature) ape conical-ovate, pathep pointed, about 8 
inches long, and an inch and a qnaptep near the base. The leaves are pemapkably slendep. 

Pmus msiOHis, Dougl. in Loud. Arboret. i, p. 2265, fig. 2170-2172 ; Torr. in WUpp. Rep p 
141. P. tubepculata and P. padiata, ZI.I)<m.-(Tab. LV.)— Neap Montepey, Califopnia; Pan-y. 
Haptweg pemarks {Sm-t. Jour. 2, p. 123) that in close woods, a mile or two from the shore the 
leaves and cones ape much lapgep than when the tpee gpows near the beach. Cones usually 3 
or 4 together, and pendulous. They are almost always imperfect on one side, and thus are 
more or less gibbous. 

PiNUS DEFLEXA (n. sp.) : foliis ternis longissimi8(7-8-unc.) tenuibus, vaginis brevibus; strobilis 

ovatisacutis; squamapum apophysi comppesso-pypamidata deflexa, nmbone lato-uncinato pecupvo- 

seminibnsaladuplobreviopibus. (Tab. LVI.) Summitof the Cordilleras of California; Parry. 

"A handsome tree, with an even columnar trunk." This species is closely allied to P. rigida 

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210 UNITED STATES AND MKSICAN llOtfNDAEY. 

of the Atlantic States, Lut is sufficiently distinct. 1 have not heen able to refer it to any 
Californian or Mexican pine hitherto described. 

PiNUS Sabiniana, Dougl; Lamb. Pin. {ed. 2) 2, p. K6, t. 80; Undl. Syn. Com/, p. 159. 
(Tab. LVII.) Mountains east of San Diego, California ; Parry. One of the largest of the 
California pines, being often from 60 to 100 feet high, and the trunk 2 to 4 feet in diameter. 
It is remarkable for its spreading branches, and for its large heavy cones with strong booked 
scales. The nuts are large and edible. Immense quantities of them are collected by the Cali- 
fornia and Oregon Indiana, who depend upon them for a large portion of their winter food. 

PiNUS ToRSEYAKA (Parry 3fSS.) : foliis qninis elongatis (6-9-unc) rigidis, vaginis squamosis 
(5-10-lin.) strobilis subglobosis, squamarum apophysi elongato-pyramidata deflexa, umbone 
continue obtuso eubrecurvo. {Tab. LVHI and LIX.) Bluffs near the month of SoHdad creek, 
10 miles north of San Diego, California ; Parry. A small tree, seldom more than 20 or 30 
leet high, with a trunk 12 to 15 inches in diameter ; often almost pro."trate from its being exposed 
to strong ocean gales. Bark of the young branches whitish ; the lower part of the truuk scaly. 
Branches horizontal, but curved upward towards the extremity. Leaves stouter than in any 
other North American pine, rough on the margin, abruptly pointed, the sheaths nearly two 
lines in diameter and an inch and a half long in the young leaves. Cones conical -globose, about 
4h inches long. Seeds, without the wing, three-fourths of an incli long, with a thick bony 
shell. This is the only pine of the section f seudo-strohus found within the limits of our flora. 
P. Apulcensis which resembles it, differs in its more slender and shorter leaves, and ovate 
smaller cones, &c. It is also allied to P. Orizabas, Gordon in Lond. Hort. Jour. 1 , p. 237 cum 
icon., but that has veryslender leaves, which are extremely rough on the angle, and ovate cones. 

Pmus Lambbrtiaka, Dmgl in Linn. Trans. 15, p. 50 ; Lamb. Pin. {ed. 2) 1, p. 57, t. 34 ; New- 
berry, I. c. p. 42, Jig. 14. On the mountains east of San Diego, California; Parry. 

Abies Douglasii, Lindl; Nutt. Sylv. 3, p. 136, (. 117; Hoolc. Fl. Bor.-Amer. 2, p. 162, 
t. 115; Newberry, I. c. p. H.fig. 20 &t. 8. Mountains east of Saa Diego, California ; Parry. 
Mountains of western Texas and New Mexico ; Bigelow. A noble tree, 50-100 feet high. In 
Oregon it sometimes attains the height of 300 feet. 

Taxodium distichum, Bich. Conif. p. 52, t. 10. Cupressus disticha, Linn.; Michx. f. Sylv. 2, 
p. 329, 1. 151. Valley of the Bio Grande below the mouth of Los Moros, in western Texas, 
Cohahuila, and Neuvo Leon. (No. 2213, Berlandier.) Below the Salado this noble tree is often 
seen in the river itself, sometimes where the water is 16 feet deep and the current strong; SckoU. 
Dr. Bigelow found it at Santa Rosa, Cohahuila, flowering in January. 

Sequoia SEMPBRvmENS, Endl. Conif. p. 198 ; Newberry, I. c. p. 57, Jig. 23. Taxodium semper- 
virens, Lamb. Pin. {ed. 2) 2, t. 64. Woods in the Coast Eange of mountains east of Monterey, 
south of which it is very rare. This is the celebrated redwood of California ; the most valuable 
timber tree of that State, 

JuNiPBKUS TETRAGONA, ScMeckt. vai. osTBOSPBRMA, Torr. in Wkippl. Rep. p. 141. Dry rocky 
places, San Felipe, &c., California ; Parry. A much branched shrub of regular conical form, 
6-13 feet high. 

JuNiPERiis PACHYPHLffiA, Tiyrr. I. c. Hill sides, western Texas, New Mexico, Chihuahua, and 
Sonera. The fruit varies from 3 to 5 lines in diameter, and is sometimes only two-seeded. 
When unusually large it sometimes contains 4 and even 5 seeds, 

JuNiPERUS occiDEHTALis, Hook. Fl. Bor.-Amev. 2, p. 166; Torr. I. c; Newberry I. c. p. 59, L 



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BOTANY. 2 1 1 

10. J. Andina, Nutt. Sylv. 3, p. 95, (. 110. Rodiy places, valley of the Pecos ; Bigeloiu. It- 
is also a native of California and Oregon. 

JuNrpERua ViKGiNiANA, Linn.; Miclix. Sylu. 2, p. 358, i. 156. Rocky hills, westcro Texas ; 
Bigclow. 

LiBOCEDRUS DEouRRENs, Ton: in Smithson. Gontrib. 6, p. 1, f. S, d: in Whippl. Hep. p. 140. 
Summit of the mountains east of San Diego, California ; Dr Parry. A noble tree ; sometimes 
150 feet high. The wood resembles that of the white cedar. 

Thoja aiGANTBA, Nutt. in Jour. Acad. Phil. 1, p. 52 ; tg Sylva. 3, p. 102 (. Ill ; Newhen-y, I. c. 
p. h^, fig. 22. Near San Diego and other parts of California ; Parry. This is the Arhor vitce 
of California and Oregon. It occurs as far north as Nutka Sound. 

CUPRESSUS MACROCABPA, Hartw. in Jour. Hort. See. Lond. 2, p. 187, <& 4, p. 296, cum icon, 
xylogr. 0. Macnabiana, Murray in Edinh. New Phil. Jour., April, 1855 ? Near the seashore 
at Monterey, California ; Parry. A tree often 30 feet or more in height, with a trunk 18 inches 
in diameter. Hartweg states that he has seen it 60 feet high, with a trunk of 3 feet in diameter. 
The head is usually depressed and very dense. Branchlets distinctly quadrangular, rigid, and 
stouter than in J, Virginiana. Leaves closely imbricated, rhombie-ovate, obtuse, very thick, 
depressed each side of the blunt keel. Sterile aments globose-ovate, 1^ line long. Anthers 
4-celled. Fruit the size of a large nutmeg, globose. Scales 6, thick and woody, irregularly 4 
to 5-angled, each with a strong excentric protuberance or blunt point. They are closely joined 
at first, but at length separate from one another. Seeds 6 to 8 under each scale, angular by com- 
pression, narrowly winged. 

CiiPRESsus GovESiAHA, Gordon in Jour. Ilort. Soc. Lond. I. c. p. 295, cum icon, xylogr. On the 
mountains east of San Diego, California ; Parry. A shrub 6 to 10 feet high, slender, and mod- 
erately branched. Leaves as in G, macrocarpa, except that they are less appressed. Sterile 
aments numerous, oblong. Fruit 4 to 6 linos in diameter; scales 10, mucronate in the depressed 
centre. Dr. Parry thinks he has seen forms intermediate between this and the last species, but 
none such were among his specimens. 

LEMNACEJ?;. 

Lemsa trisulca, Linn.; Kunlh, Emm. 3, p. 5 ; Torr. Fl. N. York, 2, p. 246. On the Ran 
Felipe creek below the mouth of the Pecos ; Bigehw, Schott. On the Mimbres, N^ew Mexico ; 
Thurber. (No. 1890, Wright.) . 

Lemna minor, Linn.; Kunth, I. c; Torr. I. c. In running water, San Luis Rey, California, 
associated with AzoUa; Parry. Cimieluque Springs, Chihuahua; Bigelow. (No. 1892, Wright.) 
The specimens are without flowers or fruit, so that we are not certain of the species. 

Lemna polyrrhiza, Linn.; Kunth, I. c; Torr. I. c. On the surfece of water, borders of the 
Limpia and other streams, Texas ; Bigelow. Oimieluque Springs, Chihuahua ; Wright. 

TYPHACEffi. 

Typua LATiFOLiA, Linn.; Kunth, Emm. 3, p. 90; Torr. Fl. 2, p. 247. In water, Painted 
Caves, western Texas ; Bigelow. 

Naias PLEXILI8, liostk.; Kunth, Enum. 3, p. 114. N. Canadensis, Michx. Fl. 2, p. 220 ; Torr. 
Fl. N. York, 2, p. 250. Western Texas ; Bigdow, Wright. 



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2;2 UNITED STATES AND MEXICAN BOUNDARY. 

Zannichellia PALXI8TRIS, Linn.; Kunth, Enum. 3, p. VIA; Torr. I. c. p. 253. Rlow-flowing 
streams and stagnant waters, western Texas, Chihuahua, and Sonora. 

PoTAMOQETON PECTiNATUS, Litm.; TotT. Fl. New York, 2, p. 247. P. marinum, Linn.; Mickx. 
Fl. 1, p. 102. Flowing water near San Diego, California ; Parry. Tucson, Sonora ; Sckott. 
(No. 1895, Wright.) 

POTAMOGETON HTBEiDUB, Michx. Fl. 1,2). 101; ToTv. I. c. In Water on the prairies of the 
Guadalupe river, Texas, May ; Wright. 

PoTAMOGEToN PAUCiFLORUS, PuTsli , Fl. ^,p. 121 ; ToTT. I. c. P. gramineus, Michx. Fl., p. 102, 
non Linn. Stagnant water of the Limpio, July ; Bigelow. 

PoTAMOGETON LUcENS, Linn.; Kunth, Fnum. 3, p. 132; Torr. I. c. p, 255. San Antonio, 
Texas, to the Rio Grande. 

PoTAMOQETON KDTANS, Linn.; Kunth, Enum. .3, p. 127 ; Torr. I. c. p. 253. Waters of the 
Limpio, Texas ; Bigelow. Ojo Caliente, Chihuahua ; Thurher. Los Noyales, Sonora ; Capt. 
E. K. Smith. 

ALISMACE^, by Dr. George Engelmann. 

Sagittaria SIMPLEX, Pwrs/i, Fl. 2, p. 397; Gray, Man. ed. 2, p. 439. In ponds, western 
Texas ; Wright. 

Sagittakia CALTCINA (Engelm. MSS ): pedicellis fertilibus sterilia tequantibus; fructiferis re- 
eurvatis ; floribus omnibus bermaphroditis, fertilibus subdodecandris, sterilibns polyandris ovaria 
pauca sterilia gerentibus ; filamentis subulatie Iteviusculis sen tenuiter papillosis antheram late 
ovatam subEequantibua sen pauUo superantibus ; stylo erecto ovario longiore in carpellis maturis 
obovatis duplo longioribus horizontali ; sepalis orbiculatis carpellorum capitatum arete involven- 
tibus. 

Var. a. maxima: foliismaximissinulatissimo hasiatis, lobis divaricatiesimis tenuiter subulato- 
appendiculatis ; scapo robusto ramoso ; bracteolis lanceolatis acutis ; verticillia fructiferis plu- 
ribus capitulis magais. — On the Red river, Louisiana ; Dr. Hale. 

Var. fi. MEDIA : foliis minoribus sinu latissimo hastatis lobis divaricatis s. divaricatissimis 
acuminatis ; scapo debili simplici verticillo infimo solum (raro duobus) fructifero; bracteis ova- 
tis obtusis ; capitulis minoribus,— Saline swamps, Jefferson county, Missouri ; Engelmann. 

Var. y. eluitans : foliis oblongo-linearibusfluitantibus; scapo debili verticillis stepe 1-2-floris; 
bracteis obtuais ; pedicellis elongatis inequalibus ; capitulis minoribus. — Ponds and slow-flowing 
waters, western Texas, Wright, No. 1899. Also in Missouri, and in the Merrimac river, Massa- 
chusetts ; Engelmann. 

[Dr. Bigelow collected near San Elceario, on the Bio Grande, a Sagittaria which was over, 
looked when Dr. Engelmann revised the genus in my herbarium in 1856. It seems to be the 
same as a plant from western Texas, which Dr, E. named, provisionally, S. hngUoha, and which 
he regarded as very near S. simplex. We can find no sufficient characters for distinguishing it 
from that species. The leaves, however, are sagittate, with very long, narrow, and widely 
diverging lobes, a state in which we have never seen 8. simplex. J. T.] 



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ORCHIDACE^. 

PiuiTANTHERA LEircosTAciiYS, Littdl. Gen. & Spec. Orch. p. 288; Hook. Fl. Bor.-Amer. 2, p. 
198. Santa Cruz, Sonora ; Thurber. Near Montery, Caliibrnia, June. (No. 1900, Wright, a 
slender variety.) "We have what we regard as the same species, from Mobelumne and Monterey, 
California, collected by Mr. Rich, and from Observatory Inlet, British America. Mr, Rich's 
specimens show a transition from the stonter form, with a dense inflorescence, to the slender 
variety, with more scattered flowers, of the plant collected by Dr. Parry. 

Platanthbra dilatata, Lindl. p. 287 ; 2''orr. Fl. N. York, 2, p. 267. Moimtains east of San 
Diego, California, May ; Parry. 

EpiPACTis gigantea, Dougl. in Hook. Fl. Bor.-Amer. 2, p. 202, /. 202. Moist ravines near 
the mouth of the Pecos ; Bigelow. (No. 1901, Wright.) The leaves in Mr. "Wright's specimens 
are narrower than in the Californian plant, but in Dr. Bigelow's they are quite as broad. 

Blgtia aphylla, Nuit. Gen. 2, p. 194. Western Texas ; Wright. Sepals deep brownish pur- 
ple. Petals dull brownish yellow ; the 3-lobed lip with 5 broad plaits or folds, purplish, 

AMARYLLIDACE^. 

Habbasthus Andbrsoni, Herb, in Lindl. Bat. Reg. t. 1345 : Var. Texanus, Bot. Mag. t. 35913. 
Western Texas, from San Antonio to the Rio Grande, October. The peduncles are often 6 
inches long. (No. 1904, Wright.) 

CooPERiA PEDUNCDLATA, Herb. Amaryli. p. 179, t. 42, /. 3-5, dtin Bot. Mag. t. 3739, Prairies, 
Texas, from the Blanco river to the Rio Grande ; also in Nuevo Leon, March^October. (No. 
1902, Wright.) 

CooPBKiA Dedmmondi, Herb, in Bot. Meg. t. 1835. On hills San Antonio, Texas, to the Rio 
(Jrande, August — October. (No. 1902, Wright.) 

Agave Americana, Linn. Sp. p. 461 ; Suntk, Enum. 5, p. 819. Western Texas, bordering 
the Rio Grande, and in the Mexican States, west; also on the Gila. (No. 1906, Wright?) 
This is one of the species called Maguey by the Mexicans. It is an exceedingly useful plant, as 
will be seen from Mr. Schott's notes. In many parts of Mexico, where it is now very common, 
it has doubtless been introduced. 

Agave Americana, /3 ? latifolia : foHie ovatis acuminatis ; floribus minoribus. Hills near 
the Copper Mines of New Mexico ; Emory ; and near Rock Greek ; Bigehw. The leaves are more 
than a foot long and 4 or 5 inches wide, forming a cone which is from 2^ to 3 feet in diameter ; 
the margin armed with short spreading or reversed prickles. From the centre rises a flower 
stalk to the height of 10 feet. Only the withered and somewhat persistent flowers were col- 
lected. These are scarcely one-tbird as large as those of the narrower leaved plant. The capsule 
is smooth, oblong, an inch and a half long, and three-fourths of an inch in diameter. We are 
yet in doubt as to whether this is a distinct species from A. Americana. Both are called Maguey 
in some parts of New Mexico and on the Gila, but sometimes the latter only is so named, and 
the other Mescal, 

Agave Lecheguilla (n. sp.?): foliis anguste lanceolatis crassis patulis margiue remote acu- 
leatie ; spica longissima ; floribus subsessilibus saspissime per paria approximatis ; perianthii 
segmentis (uncialibus) erectis. — Mountains near El Paso, and along the Rio Grande downward ; 
in, growing in patches. May— June, (No. 682 and 1907, Wright.) Caudex 4-6 inches 



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214 UNITED STATES AND MEXICAN BOUNDAIiY. 

high. Leaves 12-15 inches long and 1-1^ inch wide, thick, rounded underneath and somewhat 
channelled ahove, terminating in a stout spine, the margin armed with short strong hooked 
prickles, which are usually reversed. Scape 6-10 feet long, the upper part pretty thickly 
covered with flowers, which are mostly in pairs (the lowest in threes) and arise from very short 
(1-2 lines) forked pedaneles or hranches. Bracts lanceolate from a hroad clasping hase, 2 lines 
long, deciduous. The perianth ahove the ovary is ahout an inch long, white with a tinge of 
yellow, and the segments are narrowly-ohlong. S'amens and style much exserted. Stigma 
clavate, obtuse, obscurely 3-lobed. Capsule about an inch long and half an inch in diameter, 
erect, obtusely triangular, with a short abrupt acumination. Seeds in a double series, semior- 
bicular, compressed vertically, black and shining. We cannot identify this species among those 
described by Kunth and later writers. The fibres of the leaves are used for making coarse ropes, 
bagging, etc. 

Agave geminiploba, Gawl. in Brand's Jour. So. I, i. 1? var. Sonor^ : foliis an gusto- lineari- 
bus elongatis crebris superne concavis, subtus rotundatis, apice terretibus convolutis in spinam 
terminalem excurrentibus, margine filamentosis ; spica longissima, florihus per paria approxi- 
matis ; perigoniis (uncialibus) tubuloso-infundibuliformibus. — Sierra del Pajarito, Sonora, 
August ; Scliott. Leaves all radical, 6-1 2 inches long and 3-4 lines wide ; the margin splitting 
off into very fine white threads and entirely destitute of Spines or serratures. Scape (including 
its spike) 5-6 feet high. The flowers in pairs on very short erect stalks. The perianth above 
the ovary is about an inch long, with a somewhat funnel-form tube, and narrowly oblong seg- 
ments, which are at first a little spreading, but afterwards erect. Stamens and style exserted 
and the linear anthers, as usual, very large for the size of the flower. 

AoAVB PARViFLORA (n. sp.): acaulis ; foliis lineari-lanceolatis basi valde dilatatis infra medium 
margine catilagineo-denticulatis, ultra medium filamentosis ; spica elongata ; pedunculis bre- 
vissimis dissitis 2-4-flori8 ; perianthiis (vix semiuncialibus) suhcampanulatis, laciniis breviovatis ; 
capsulis subglobosis, — On various sierras of Pimeria Alta, Sonora ; Schott. Leaves all in a 
radical cluster, 2^-3 inches long and about half an inch wide, thick, much dilated at the base ; 
the margin below the middle furnished with minute but evident cartilaginous teeth, while on 
the upper half the margin bears rather stout white threads ; the spiny tip is not more than 2-3 
lines long. Scape 4-5 feet long ; the clusters of flowers more scattered than in the last species. 
Only the withered persistent flowers were collected. These when soaked were scarcely half an 
inch long and whitish with a tinge of rose-color. Stamens and style exserted. Capsule 4-5 
lines long and of nearly the same diameter. Seeds as in the last species. This is possibly A. 
fllifera, Salm-Dyek, a species of which the flowers and fruit are not described. 

Agave Virginica, Linn.; Michx. Fl. 1, p. 18T ; Kunth, Fnum. 5, p. 833. Hills on the Eio 
Grande from EI Paso down to Laredo, April— August. (No. 683 and 1905, Wright.) 

I subjoin a description, by Dr. Engelmann, of a species of Agave found at Eagle Pass on the 
Bio Grande, (probably collected by Mr. Schott.) of which there are no specimens in the col- 
lections : 

Agave maculaia (Engelm.): radice crassa cyliudrica nigra ; foliis radicalibus lanceolato- 
linearibus longe acuminatis subtus convexis supra profunde concavis recurvatis glitucis maculis 
atro-virentibus notatis, margine albido cartilagineo-dentatis apice acutie nee spinescentibus ; 
scapo basi foliis paucis instiucto ; florihus in spicam simplicem dispositis brevissime pedicellatis ; 
tubo corollra superne vix ampliato, laciniis Hneari-oblongis rotato-patentibus,— Eagle Pass on 



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ROTANy. 215 

the Bio Grande. Root 6-8 lines in diameter, 4-6 inches long, black, with long thick wliite 
fibres. Leaves 4-6 inches long, ^ an inch wide, deeply channelled, but not carinate, very 
glaucous, the dark greenish brown blotches more distinct on the upper than the lower surface. 
Scape 1^-2 feet high. Spike about 6 inches long, with 12-15 flowers. Bracts subulate, longer 
than the pedicel, which is about one line long and articulated in tlie middle. The flowers, 
which are of muaky not disagreeable odor, are about 20"' long ; ovary 6"', tube 9'", the limb aboufe 
6'", Lacinite of the perianth at first green, afterwards on both sides (with the filaments) of a 
dirty purplish color Evidently near A, revoluta, Kloizsch; but that species has smooth-mar- 
gined leaves ; limb of the perianth equal to the tube ; stamens iree in the tube and longer than 
the limb. To Polyanthes Mexicana, Zucc. (which Kunth in Enum. 5, p. 847, says, is probably 
a species of Agave) it is still more nearly related, but that has leaves entire on the margin, 
with reddish dots ; flowers white, in pairs and sessile, the tube 18 lines long, segments only 
?--^ lines long. Capsule (immature) ovate oblong obtusely triangular. Nothing is said of the 
fragrance of the flowers. 

bkomeliacejj:. 

TiLLANDSiA RECURVATA {Linn.; Le Oonte in Ann. Lye. N. York, 2, p. 132): csespitosa; foliis 
aubdistichis filiformibus teretibua anguste canaliculatis cinereo-lepidotis recurvatis ; peduncuHs 
folio longioribus unifloris glabriusculis ; bracteis 2-li acuminatis calyce longiorihus. — On trees^ 
near the Rio Coleto, Texas ; Thurber. On oaks and grape vines, Los Moros ; Bigdow. Lower 
Rio Grande ; Scholt. San Fernando, Mexico ; Berlandier, No. 818. The specimens are all in 
fruit, and the peduncles mostly one-flowered, 

TiLLANDEiA IISHE0IDE8, Linn.; Ell. Sh. 1, p. 379 ; Le C'onte, I. c. On trees, western Texas, not 
found on the Rio Grande above the mouth of the Pecos. 

Dasylirion tbnuifoltdm (n, sp.): caudico hrevissimo; foliis linearihus gramineis plania vix 
rigidulis nitidis margine spinuloso-scaberrimis ; panicula elongata, ramis siraplicibus distautibus 
sublaxifloris, basi subnudis ; pedicellis flore sublongioribus ; fructibus membranaceia, lobis 
carinatis vix alatis ; seminibus oblongo-obovatia. Among rocks, borders of the Sabinal river ; 
Wright, (No. 1919.) Stony places on the high plateau of the upper Guadalupe, Texas ; Lind- 
heimer. Caudex short and almost subterranean. Radical leaves about a foot long, 2-2-| lines 
wide, bright green and shining on both sides, much thinner in texture than in any other species 
of this genus, those of the scape gradually smaller. Stem or scape (including the panicle) about 
3 feet high. Branches of the panicle 2-3 inches long. Flowers solitary or somewhat fascicu- 
late. Perianth scarcely a line and a half in diameter. Ovary 3 -celled, with 2 erect ovules in 
each cell ; stigmas 3, oblong, sessile. Fruit rather broader than long, 3-lobed, one or two of the 
seeds commonly abortive. Seed minutely reticulate-rugoso. Remarkable for the thin leaves 
and long naked panicle, 

Dasylirion graminifolium, Zucc. PI. Nov. v. Min. Gog. fasc. i,jt. 225, i. 1. Hill sides and 
table land, western Texas, New Mexico, Chihuahua, and Sonora, westward to the Colorado, 
NeUTo Leon; Berlandier, (No. 3211, No. 694, Wright. No. 70, 212, 212, 419, and 549, 
Fendler.) Caudex 3-5 feet high, the upper part clothed with the long spiny-serrated recurved 
leaves. Scape 6-8 feet high. Flowers in a long dense panicle of close spikes, which are sub- 
tended by broadly lanceolate clasping foliaceous spathte. The male flowers with a sterile 
ovary, and the female with sterile anihers. Bracts and bracteoles broadly ovate, acuminate 



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21G UNITED STATES AND MEXICAN BOUNDARY. 

fierrate-laeerate, scavioua. Perianth white ; the segments obovate, concave. Ovary ovate, 
obtusely triangular, one-celled, with 6 anatropous erect ovules at the base of the cavity. Fruit 
coriaceous, narrowly winged, indehiscent. Seed S-sided, with obtuse angles, smooth. Embryo 
oyliodrical, in the axis of horny albumen, which it nearly equals in length. D, Texanum 
Soheele, aeoma to he hardly distinct from this species. 

Basiurion Bigelovh, Torr. Bot. Wldpp. Rep. p. 151. Sierra del Tule y Tinaja Alta, Sonora; 
Sdiott, " Stem 6 feet high, and 2-3 feet in diameter." Leaves 3-5 feet long, and nearly an 
inch- in diameter about the middle, flat ; the margin a little rough, and sometimes separating 
into threads. " Scape 6-8 feet long. Raceme 1-1| foot long, and nearly a foot in diameter at 
the base." Fruit papyraceous, 1 or 2 of the cells usually sterile, not opening by regular 
dehiscence, but by the rupture of the thin walls. Seeds oblong-ohovate, whitish, dull, slightly 
reticulated. Embryo slender, cylindrical, in the axis of horny albumen, 

Dasylikion Lindheimerianum, Scheele in Linncea, 25, p. 362, High plains and hill sides near 
the Copper Mines, New Mexico; Bigelmo. El Podrero, Sonora; Schott. (No. 693, Wright, 
No. 213, 297, 551, 552, Lindkeimer.) — All our specimens are in fruit. Leaves a yard long, and 
about 3 lines wide towards the base, channelled above, rounded underneath. Pedicels filiform, 
thickened and triangular at the base of the flower. Fruit membranaceous, nearly twice as 
broad as long, and exceeding the pedicels in length, conspicuously 3-winged, only one of the 
cells usually fertile, and this containing hut a single obovate seed,— This species seems to be 
very like D. Hartwegianum, Kunth. D. Eigelovii, which it also resembles, differs in its much 
larger fruit, broader leaves, and short pedicels. 

Dasylirioh esumpbns (n. sp.) : foliis lineari-ensiformibus e basi non attenuatis superne 
angusto-filiformibus supia canaliculatis infra semiteretibus margine serrulato-scabris ; spathis 
e basi lata longissime angustissimeq^ue attenuatis ; pedicellis vix flore tequalibus ; fructibus 
trilobis tril ocular ibus lobis carinatis vix alatis ; seminibus globosis. Hills and gravelly places, 
western Texas and New Mexico, June. (No. 1918, Wright.) Leaves 2^-3 feet long, about 3 
lines wide toward the base, tapering to a long, almost filiform extremity, rigid ; the margin 
rough, with minute cartilaginous serratures. Panicle compound ; the spathaceous bract at the 
base of each primary branch dilated and clasping below, then tapering to a long filiform point. 
Pedicels jointed near the middle. Flowers white, about 2 lines long, the male (as usual) 
bearing imperfect anthers, and the female an infertile ovary. Capsule with one or two of the 
cells often without seeds, the angles prominent and acute, but not winged. Seeds when near 
maturity, bursting the pod, and then remaining for some time attached to the placenta. 
IRIDACE^. 

Iris maceosiphon, Torr. Bot. Whip. liep. p. 144. Near San Francisco, and in Napa county, 
California, March ; Thurher. 

SisYRiNCHiUM Bermudiana, Linn. ; var. muoronatum. San Diego, California, May ; Thurber. 
Western Texas ; common along the Rio Grande ; also in New Mexico, near the Copper Mines. 
S. minus, Engelm. & Gray, {jPL Lindh., No. 313,} can hardly be considered a distinct species 
from this, as intermediate forms not unfrequently occur, 

Nbmastylis acuta, Engelm. d Gray, PI. Lindh. 1, p. 27 {adnot.) N. geminiflora, Nutt. in 
Trans. Amer. PUl. Soc. («. ser.) 5, p. 157. Ixia acuta, Bart. Fl. N. Am. 1, t. 76. "Western 
Texas, Thurher. Mountains of Muerte ; Bigeloto. 

Trifurcia ciBUiiLEA, Herh. in Bot. Mag. suh t. 3779. Prairies of the Colorado, Texas ; Wriylil. 



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SMILAOEiE. 

Smilax tamnoides, Linn. sp.p. 14150. Piedra Pinta, western Texas (in fruit) ; Bigelmo. An 
extremely variaWe species, of which S. Bona nox, S. hantata and S. pandurata are doubtless 
mere varieties. My friend, Dr. Chapman, who has carefully studied, in a living state, the 
Florida species of this genus, thinks that S. Beyrichii, S. Sprengelii and S. hederojfolia of 
Kunth are also forms of S. tamnoides. 

Trillium SESSILE, Linn. Spec. p. 284, var. angustipbtalum, Torr. Bot. Wliippl. Eep. p. 151. 
Moist places near Monterey and San Luis Obispo, California, March — April ; Prajry. Napa 
county, in the same State ; Tlmrher. 

LILIACEiE. 

Frixillaeia lakceolata, Fursh, Fl. 1, p. 230. F. mutica, Lindl. Bot. Eeg.fol. 1663 ? (Tab. 
LXI.) In pine woods near Monterey, California, i'ehruary — April; Parry; also in Napa 
county; Tlmrber. The leaves of Dr. Parry's specimens are unusually narrow. 

Fhitillaria ICamtschatcbhsis, Fisch. in Hook. Fl. Bor.-Am. 2, p. 181, (. 193, A. San Lusi 
Eey and San Luis Obispo, California ; Parry. 

CALOCiioRTgs UNiPLoaus, Mook. (h Am. Bot. Beech, p. 398, t. 94. Monterey, California, May ; 
Farry. 

Calochortos yeswi\}s,, Benik. in Hort. Trans, (n. ser.) 1, p. 411, ;. 15,/. 3. Monterey, 
California, May ; Parry. Near the Copper Mines, New Mexico, May— June ; Bujehio. San 
Luis mountains, Sonora ; Copt. E. K. Smith. 

Calochobtds luteus, Dougl. ; Lindl. Bot. Beg. t. 16C1. San Diego, California, May ; Farry. 

Calochortets splendens, Benth. I. c. p. 411, t. 16,/. 1. San Diego, California, May— June ; 
Parry, Thurier. 

Cycloeothiia alba, Benth, I. c. p. 413, t. 14, /. 3. Monterey, California, May ; Farry. 

Allium cerhdum. Both; Bot. Mag. t. 1134 ; Kuntk, Enum. 4, p. 435. Hills near the Copper 
Mines, New Mexico, July ; Btgdow. (No. 1913, Wright. No. 848. Fendler.) 

Allium reticulatum, Null, in Eraser, Oat. ; Hook. Fl. Bor.-Am. 2, p. 184, t. 195 ; Kunth, I. a. 
Hill sides and prairies. Western Texas to the Rio Grande and Chihuahua ; also in New Mexico 
west to the Copper Mines, April. (No. 1915 and 1916, Wright.) 

Allium mutabile, Michx. Fl. 1, p. 195 ; Kunth, Enum. 4, p. 451. Gravelly hills, western 
Texas ; Wright. Presidio del Norte on the Eio Grande, and in other places on that river ; 
Bigeloio. Chihuahua; Thurher. The bulb is commonly single, ovate, and 1-1^ inch long, 
Leaves narrowly linear, shorter than the scape, which is about a foot long. Umbel 15-40- 
flowered. Spathe 2-3-valved. Perianth rose color, sometimes very pale ; the segments ovate- 
lanceolate, acute. Stamens about two thirds the length of the perianth ; filaments subulate, 
gradually and moderately dilated downward ; anthers oblong. Cells of the ovary 2-ovulate. 
Capsule subglobose, 3-lobed; the cells rounded at the summit, usually perfecting but a single 
ov.ite black seed. 

Allium acuminatum, Hook. Fl. Bor.-Am. 2, p. 1S5, t. 196. San Diego, near the boundary 
line; Parry. New Almaden, California ; Thurber. 

Allium (H^pbroscordium) maritimum, Torr. Bot. Whippl. Rep. p. 149 ; Benth. PI. Hartio, 
p. 339. Sandy places near Monterey, California, March; Parry. 
28 k 



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218 UNITED STATES AND MEXICAN BOUNDARY. 

Allium (Nothoscorditjm) striatum, Jacq.; Hot. Mag. t. 1035 ; Ell. Sk. 1, p. 385. 
of ■western Texas and along the Eio G-raude ; common ; flowering from March to Septemher. 
Janos, Coralitas river, Sonora ; Capt, E. K. Smith. 

Sub-genus Chrysoscordium, Sepala basi vix connata, erecto-patentia, uninerTia. Filamenta 
filiformia, baai utrincLue nnidentata. Ovarium sessile : ovula in loculia 4-5. Herba Californica 
scapigera, bulbosa? ; foliia lincaribua ; floribus uinbellatis aurantiacis. 

Allium (Cir.) croceum (n. sp.) Summit of the mountains east of San Diego, California ; 
Parry. Leaves all radical, about a foot long and 2^ lines wide, glabrous. Scapo as long as the 
leaves, slender, terete, naked. Umbel 9-12-flowcred ; the pedicels 8-10 lines long, spreading, 
articulated close to the flower. Spatbe of 4-5 lanceolate acuminate valves, which are nearly 
distinct to the base. Sepals 4-5 lines long, orange-yellow, oblong, rather obtuse, with a ciliolate 
callosity at the tip. Stamens one fourth shorter than the sepals; filaments filiform, vrith an 
oblong adnate tooth on each side at the base. Ovary oblong ; style about as long as the sepals, 
filiform ; stigma very small; 3-lobed. Capsule (immature) obovate ; seeds compressed. This 
species resembles a small Calliproa lutea. It differs from most of the genuine species of Allium 
in its yellow flowers, more numerous ovules, and articulated pedicels. 

OAMAsaiA Fraseri, Torr. in Sot. Wliippl. Bep. p. 147. Scilla esculenta, Ker. S. Fraseri, 
Gray, Man. ed. 2, p. 469. Prairies of western Texas ; Wi-igM. 

Brodi^a (Dichblostemma) capitata, Benth. PI. Hartw. p. 339. Dichelostemma congestum, 
Torr, Bot. Wkippl. Bep. nonKuntk. Near Monterey, California, Parry; and Napa valley, in 
the same State ; Thurber. Until very recently, I had never seen the true B. congesta ; all the 
numerous specimens of what I have taken for it having 6 perfect stamens. As an early figure 
of Hookeria pulcbella, S'alish., which several botanists have referred to B. congesta, represented 
the flowers as hexandrous, I supposed that the fertile stamens were commonly 6. I have, 
however, just examined a Brodifea from Oregon, which exactly accords with Smith's description 
of B, congesta. Nevertheless it is possible that the usually abortive stamens are sometimes 
anthoriferous. 

Var.? paucielora: umbella 2~4-flora ; pedicellis valde intequalibus partim spatha 3-4-valva 
subduplo longioribus. Near the Copper MineSj New Mexico; Bigelow. On the Gila river, 
March ; Parry. San Francisco Spring, Sonora, Oapt. E. K. Smith. This may prove a distinct 
species ; for we have seen no intermediate forms. 

Brodi.^a srandiflora, Smith, I. c; Kunth. Enum. 4, p. 471; <& var. macropoda, Torr. Bot. 
Whippl. Bep. p. 149. San Pasqual, California, May; Thurher. 

Calliproa lutea, Lindl. Bot. Beg. t. 1590 ; K%nth, Enum. 4, p. 476. Dry grassy hill sides, 
near Monterey, California, May ; Parry. 

Chlorogalum pomekidiahum, Kunth, Enum. 4, p. 682. Anthericum pomeridianum, Gawl. Bot. 
Beg. t. 561. (Tab. LX.) Pinasquitos, California, May ; Thurber. 

ANDKOSTEPHIUM, Nov. Gen. 

Perianthinm corollaceum, infundibuliforme, 6-Mum, regulare, porsistens ; laciniis tube sub^- 
q^ualibus patulis uninerviis. Stamina 6, omnia fertilia ; filamentis superne in tubum brevem 
cylindraceum connatis, inter et ultra antheras biloculares introrsae dorso medium affixas in 
coronam 6-foliolatum productis. Ovarium sessile, oblongnm, 3-1 ocular e ; loculis 12-14-ovuIati8: 



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BOTANY. 219 

stylus iiliformie, stamina ffiquans ; stigma capitato-trilobum. Capsula late-obovata, truncata, 
S-loba, lobis compresais. Semina in loculis 8-14, verticalia, eompresa, Hseriata, nigra. Herba 
bulboso-tuberosa. Folia omnia radicalia, linearia, semi-cylindrica. Flores in apice scapi 
umbellati, pedicellati, violacei, bracteie 3-4 involucrati ; pedicellis inarticulatis. 

Ahdrostbphium violacbum. — Hills and prairies on the rivers Blanco and Colorado, Texaa 
March ; Wright. We hare excellent specimens from Dr. E. Gleason, United States army, 
collected near Fort Arbuckle ; and it occurs in Lindheimer's Texan collection fasc. IV. Leaves 
fi-8 inches long and 1-2 lines wide, arising from a small coated bulb which surmounts a depressed 
globose bulb or corm. Scape about as long as the leaves, rather stout, bearing at the summit 
an umbel of 2-7 flowers, which have a faint sweet^ador, Bracts scarioua, lanceolate, acuminate, 
3-nerved. Pedicels rather shorter than the flower. Perianth nearly an inch long, 6-cleft nearly 
to the middle, the segments more or less spreading, oblong, obtuse. Stamens 6, the freo portion 
of the filaments united into a tube which arises from the orifice of the perianth is conspicuously 
exserted, and produced between and beyond the anthers into a crown of 6 oblong emarginate 
lobes. Anthers linear-oblong, notched at each end. Style about aa long as the stamens. Ovary 
entirely free from the base of the perianth. Capsule sessile, with 3 very prominent laterally 
compressed lobes or cells, which open loculicidally. Seed suborbicular, laterally much com- 
pressed and narrowly winged, vertically imbricated in a double series. Embryo slender, 
cylindrical, a little curved in the axis of fleshy albumen. The Mexican genus Bessera most 
resembles this, but it differs in the very short tube of the perianth, in the tube of filaments having 
only a short tooth between the filaments, and in the form of the capsule. 

MiLLA BiFLORA, Cav. Ic. 2, p. Tfi, t. 196, ex Kunth, Enum. 4, p. 478. M. csirulea, Scheele in 
Linnma, 25, p. 260. On the Rio San Pedro, Sonora; Schott, Tkurber. No. 1913, Wright. 
Scape l~3-flowered. Bulb subglobose, clothed with light brown scales. Our plant wholly 
resembles Mexican speciraeus collected by Dr. Halsted and others. 

EciiBAHDiA TBRNiPLORA, Ortega; Kunth, Emm. 4, p. 627. Var,? angustifolia: foliis 2-4 lin. 
latis, pedicellis infra medium articulatis; ovarii loculis sub-16-ovulatis. Copper Mines, New- 
Mexico ; rocky places near the month of the Pecos, and near Kock Creek, J uly— August ; Bigdow; 
(No. 69 and 1912, Wright.) Cretaceous hills and ravines near the Pecos; SchoU. Monterey, 
Mexico ; Dr. Edwards. New Mexico, Fendler, No. 851. Eoot a fascicle of thick fleshy fibres. 
Leaves usually less than 3 lines wide. Stem scapiform, l|-3 feet long, very slender, often nearly 
simple above, but more commonly somewhat paniculately branched, the branches erect. Flowers 
2-4 or more together in fascicles ; the terminal ones racemose and mostly solitary. Pedicels 
jointed about one-third their length from the base. The expanded perianth about three-fourths 
of an inch in diameter, orange-yellow; segments narrowly oblong, with closely approximated 
nerves along the middle. Stamens scarcely half the length of the perianth ; filaments roughened 
with short, obtuse, somewhat retorse teeth; anthers linear-oblong. Ovary obovate, the cells 
with about 16 anatropous ovules in a double series; style|one-third longer than the stamens, 
filiform ; stigma minutely 3-lobed, ciliolate-papillose. Capsule ohlong-obovate, obtuse, 3-Iobed, 
thin. Seeds angular, black. E. terniflora differs from our plant in the leaves being 6-7 lines 
wide, the pedicels jointed in the middle and the more numerous ovules (23-24 in each cell of 
the ovary.) 



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220 UNITED STATES AND MEXICAN UOUNDAKY. 

SCI-10:NOL1EION,Nov. Gen. 

Perianthium corollaceum, 6-pliylliim, peraistens ; sepala 3-5-nervia, patentia. Stamina 6, 
inife basi aepalorum inserta; iilamenta subulata basi complanata ; anthera oMongie, utrioquo 
bilidai, introrsae. Ovarium liberum, ovali-globosum, subsessile, 3-loculare; ovula in loculis 2, 
collateralia, horizontalia, anatropa; stylus filiformis, rectus; stigma minutum, 3-lobum. Oapsula 
globoso-obovata, 3-loba; loculis 1-2-spermis. Seraina subglobosa nigra nitida. — Herbfe pe- 
rennes; rliizoraate bulboso-tuberosa ; foliis subradicalibus angusto-linearibue subcanaliculatis ; 
ecapo gracili ; floribus albis in racemia simplicibus vel laxe paniculatis ; pedicellia juxta florem 
articulatia basi bracteatis. 

ScHffiNOLiEiON MiCHAUXii: pedicellis bractois 2-4-plo longioribua ; sepalis ovatis,iiorvis sub- 
distaotibua. — Phalangium croceum, Michx. Fl. 1, p. 196. Ornitbogalum ? croceum, Ell. Sk. 
1, p. 397 ; Kiintli, Enum. A, p. 371. 0. Texanum, Sdieele in Linnaia, p. 146. Moiat places on 
the Colorado of Texas, March — April ; Wright. Also found on the Eed Eiver of Louisianaj by 
Dr. Hale, and in East Florida by Mr. BucUey and Dr. Chapman. Rhizoma oblong or sorae- 
tinjea elongated, about as thick as the little finger, crowned with a scaly bud or bulb. Leaves 
1-1^ foot long, narrowly linear, glabrous, somewhat channelled above, and rounded underneath. 
Scape 1^-3 feet high, terete, slender, simple, or with a few branches above. Racemes 8-25-flow- 
ered, the pedicels S-S-linea long, somewhat spreading, with short bracts at the base. Perianth, 
when expanded, 4-5 lines in diameter, spreading, white, the 3 exterior sepals greenish externally 
along themiddle. Stamens a little shorter than the perianth ; filaments white. Capsule coriaceous, 
somewhat truncate, with 3 rounded lobea ; cells 1-2-seeded, one or two of them abortive. Seeds 
globose-ob ovate, blact and shining. Embryo straight in the axis of flesliy albumen. The 
flowers of this species are yellowish when dry, a circumstance which doubtless gave rise to the 
specific name of Michaux, but which had best be superseded, as it may lead to error. S. album, 
Durand, differs in its pedicels being much shorter than the subulate bracts ; in the oval sepals 
which are narrowed towards the base, and in the almost confluent nerves. The perianth is also 
of much more delicate texture than in 8. Michauxii, and dries white. This genus was indicated 
in Durand's account of a collection of California plants made by Mr. H. Pratten and published 
in the Journal of the Academy of Philadelphia (a. ser. vol. 2.) It is much more nearly related 
to Ornitbogalum than to Phalangium. 

Smilaciha 8TELLATA, Desf. m Ann. Mus. 9, p. 51. Near the Copper Mines, New Mexico; 
Bigelow. Moist places near Monterey, California, April ; Parry. The raceme is looser, and 
the pedicels considerably longer than in the eastern plants. 

Smilacina racemosa, Dcsf. I. c. Mountains on the Mimbres, April— May ; Bigdow, Thurbcr. 
California ; Parry. The branches of the panicle are shorter and fewer- flowered, both in 
the California specimens and in those of New Mexico, than in the plant of the Eastern States. 

PoLyooNATUM m^LORVM, FU. S&. 1, p. 393? Copper Mines, New Mexico, June; Bigelow. 
(No. 1917, Wright.) Whole plant quite smooth. Stem about a foot and a half high. Leaves 
narrowly oblong, glaucous underneath. Peduncles 2-flowered, Filaments very slightly rough, 
inserted below the middle of the tube of the perianth. 

Yucca angustipolia, Pursh, Fl. 1, p. %1^ ; Nutt. Oen. 1, p. 218, Sandy hills and plains. New 
Mexico, Westorn Texas and Cliihuahuaj May — August. (No. 910 and 911, Wright ; No. 850 
of Fendler's New Mexican collection.) 



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BOTAfiY. 221 

iTiiccA? PABViFLORA (ti. sp.): subacauHs ; foliie anguste-linearibus canaliculatia rigidig recurvatis 
margine filamentosia ; pediiiiculis scapiformibus subpaniculatis ; bracteis e basi dilatatis promisee 
aeuminatis; pedieellis faaciculatis ; sepalia linearibus subconniventibus; stylus filiformibus 
stigmate integro truiicato. Gravelly hills near the mouth of the Pecos ; Bigdoio. Stony hills 
■west of the Nueces, Texas ; Wright, (No. 1908). Oaudex apparently very short. Leaves 12- 
18 inches long, 4-5 lines wide, conduplicate when dry, very smooth, acute at the tip, but not 
pungent ; the filaments on the margin 1-2 inches long and about as thick as common sewing- 
thread. Scape 3-4 feet long, with distant clasping bracts ; the upper part racemose and some- 
what branching. Pedicels 3-4 together, 6-10 lines long, arising from the axis of a clasping 
bract, erect, a little thickened upward and articulated close to the flower. Perianth white? the 
divisions about three-fourths of an inch long, scarcely 2 lines wide, rather obtuse, ecarceiy 
united at the base. Btamens 6, shorter than the perianth; anthers oblong; bifid at the base. 
Ovary oblong, 3-celled ; the cells with numerous horizontal ovules ; style a little exserted 
filiform, triangular and a little enlarged toward the extremity. This differs from all the other 
species of the genus in its elongated filiform style and narrow sepals. The fruit of Mr. Wright's 
specimens in Dr. Gray's herbarium is unripe. It is subglobose, and about an inch in diameter. 
As Mr. Wright likens it to a fig, it is doubtless fleshy. 

Yucca pubbrula, Haw. in Phil. 3Iag. March 1828, ex Kurdh. Enum. 4, p. 2'r2. Y. brevifolia 
A. Schotf, MSS. Valley of the Santa Cruz river, and Sierra del Pajarito, near the monument 
Konora, June ; Schoti. Stems 6-8 feet high. Leaves mostly in a terminal crown, about a foot 
long and 5-6 lines wide, concave above, a little rounded underneath, of a thick and firm texture 
■with a few loose threads on the margin, the apex armed with a spine. The persistent retrorsely 
imbricated vestiges of former leaves give the stem a very rough appearance. Scape 2-3 feet 
long, paniculate above, pubescent. Bracts at the base of the branches lanceolate, tapering to 
a long point. I'lowers apparently white. Sepals broadly elliptical 1^- inch long, rather acute. 
Fruit about 2^ inches long, and IJ in diameter, pointed with the base of the styles. "This is 
the Sotol of the Sonorians, but not of the Texans along the Kio Grande. It bears large fleshy 
fruits which are edible, and called Datili, probably on account of their shape," — Schott. 

Yucca rupicola, Sckeele in Linncea, 23, p. 143. Y. tortifolia, Lirtdh. MSS. Gravelly hills and 
plains, western Texas, New Mexico, and Chihuahua, April-May. (No. 688, 689, and 1 909 
Wright. No. 709, Fasc. IV, Lindheimer.) Fruit an inch and a half long, dry or nearly so often 
remarkably constricted near the middle. 

Yucca baccata (n. sp.) : foliis lanceolatis planis crebris margine filamentiferis apice convolutis 
spina terminali brevi ; floribus campanulatis ; fructibus racemosis cernuis ovatis baccatis. Parras 
Cohahuila ; Thurher. High table lands between the Eio Grande and the Gila ; Major Emory. 
This is the same species that is noticed in the Botany of Whipple's Report as having been found 
at Hurrah Creek, New Mexico, by Dr. Bigelow. According to Dr. Eigelow it is a low species 
with a subterranean caudex. We have no information as to the length of the scape. The 
flowers appear to form a racemose panicle. They are larger than in any other species of Yucca 
here noticed ; the sepals being 2^-3 inches long, tapering to each end and 6-7 lines wide in the 
middle. The fruit is the size of a large fig, -with a sweet edible pulp. Near Monterey, Cali- 
fornia, Dr. Parry collected the leaves of a yucca resembling those of this species, except in 
being smaller. On the plains of western Texas, near the Limpio, and in the vicinity of Presidio 
del Norte, Dr. Bigelow found a yucca 10-15 feet high, with leaves almost exactly like thoae of 



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222 UNITED STATES AKD MEXICAN BOUNDAKY. 

Y. baccata, but the fruit is longer, though not greater in diameter, and the pulp is thicker. It 
may, till better knowEj be regarded as a variety (macrocarpa) of that species. We have from 
Mr. Thurber the leaves and a portion of the fruit of a yucca which he collected near Parras, in 
Cohaliuila, where it covers the table lands. It is a tree sometimes twenty-five feet or more in 
height, with several spreading branches. The leaves are about 15 inches long, and from an inch 
to an inch and a half wide, flat, terminating in a spiny point, and the margin filamentoua. The 
fruit is two or three inches long, and has a thin sweet pulp. The seeds are thielc and black. 
A flgnre of the plant is given in Bartlett's narrative, vol. 2, p. 491. Our specimens are hardly 
sufficient for determining whether it is a described species. It may not be distinct from the 
yucca found by Dr. Bigelow. Mr, Schott, in his notes, states that on the upper Eio Grande 
he saw a yucca, bearing edible fruits, with a stem 18 inches in diameter. The trunks have been 
used in Mexico as palisades in the construction of stockades. Besides the above species, there 
are two or three others in the collections, which. I have not been able to determine satisfactorily 
for want of sufficient materials. One is a yucca found by Mr. Schott on rocks near San Pasqual, 
southern California. It is the same that is doubtfully referred to Y. aloifolia in the Botany of 
Whipple's Eeport, (excluding the synon. and No. 1909, Wright.) The caudes is 1-2 feet high, 
and the scape 2-3 feet. The leaves are 18 inches or more in length, channelled on the upper 
side, rounded or obtusely angular underneath, and slightly serrulate-scabrous on the margin ; 
the apex convolute and spiniferous. The flowers (as represented in a sketch) are in a spreading 
panicle. Capsule coriaceous, ohovate, and somewhat truncate, 3-lobed, an inch and a quarter 
long and of nearly the same breadth. Seeds semiorbicular, thin and flat. If it prove to be a 
distinct species it may be called Y. Whipplei. The late Dr, Gregg found between Parras and 
Cerralbo a yucca between 20 and 30 feet in height ; but his specimens are too imperfect for 
comparison. 

MELANTHACEJi;. 

Aniiclea Pebmonti, Torr. in Bot. Whippl. Eeport, p. 144, Fields around San Diego, Ca li 
fornia ; Parry. 

Xeropiiyllum tenax, Nult. Gen. 1, p, 235, Gray, Mdanth. in Ann. Lye. N. York, 4, p. 129. 
Helonias tenax, Pursh, Fl. I, p. 243, p. 9. Dry hills near the seacoast, Monterey, California, 
May ; Parry. 

8cH(ENOCAUL0N Vrvkmostiu, Gray, in Bot Beech, p. $BQ,adn. S. Tex&'h-um, Scheele in JAnnoia, 
25, p. 262. Near Yorktown, on the Lower Kio Grande, Texas, April — October ; Schott. This 
species was first discovered by Drummond, and is No. 284 of his third Texan collection. It was 
afterwards found by Dr. Riddell and Mr. Lindheimer. The filaments are AUnted upioard and 
not downward, as stated by Scheele 1. c. 

JUNCAOE^, 

JuNCua Balticds, WiUd. in Berl. 3Tag. 1809, p. 298, ex Eunth, Enum. Z,p. 316, Sandy moist 
places, western Texas, New Mexico, Souora and California, June ; (No. 1920 and 1921, Wright.) 

JUNCUS DEBiLls, Gray, Manual, ed 2, p. 480, J. polycephalus, var. ? depanperatus, Torr. Fl. 
N. Yorh. 2, p. 328, Wet places along the Limpio, July ; Bigelow. Arroyo de los Janos, 
Sonora; Schott. (No. 1925, Wright.) 

JuNCUs xiPiioiDES, C, A. Meg. in Meliq. UaenJc. 2, p. 143, ex K%nih, Enum. 3, p. 331. Near 
Monterey, California, May; Parry. Very near J. Menziesii/9, Californicus, Hooh. & Am. Bot. 
Beech, p. 402. 



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BOTANY. 223 

JtiNcus ARTicULATUS, Linn.] Gray, I. c. J. lamprocarpus, Fhrk. Near the Copper Mines, New 
Mexico, June ; Bigelow. Var. crassipolius : foliis craseis compreasia vix articulatis. Sonera ; 
SclioH. Var. WULTIFLORUS : capitalis paucis 20-30-flori8. Eronteras, Sonora; Thurber. 

JuNCUS NODOS0S, Linn. ; Gray, I. e. Laredo, on the Lower Rio Grande, June ; Bchott. Var. 
meqacephali:s, Torr. Fl. i^. Yorh, 2, p. 327. San Elceario on the middle Eio Grande ; Bigdaxo. 
Along the Gila, Sonera ; Thurher, SckoU. 

Juscua TENms, Wiild. sp. 2, p. 214 ; Torr. Fl. N. Yorh, 2, p. 327. Hills at the Copper Mines, 
New Mexico ; Thurber. 

JuNCUS MARGiNATUS, BostJc. Junc. p. 38, if. 2,/. 3. Western Texas; Wru/hl. (No. 1923 in 
part. 

Jtjhcus lon&istylis (n. sp.) : culmo erecto simplici compresso foliato ; foliia planis gramineis ; 
capitulis paucis 4-6-floris in panicula sub-simplici dispositis; sepalis lanceolatis mucronatis 
capsula ohovato-oblongo ohtuea mucronata pauUo longioribus ; seminibus oblongia utrinque 
acutis ecaudatis. Near the Copper Mines, New Mexico, June ; Bigehw, (No. 1924, Wright.) 
Culms from a rather stout root-stock, 12-18 inches high, slender, distinctly compressed. Leaves 
flaccid, 1-]^ line wide, obscurely nerved ; the radical ones 6-8 inches long, those of the culm 
(2-3 in number) shorter. Heads 4-8 in a contracted or oblong panicle, the bracts at the base 
ovate, scarioua, about as long as the sepals. Stamens 6. Style more than half as long as the 
ovary. Capsule usually about one-fifth shorter than the sepals. A very distinct species. J. 
marginatus, to which it is nearest related, differs in the usually much more numerous heads, 
triandrous flowers, short style, obtuse inner sepals and subglobose capsule. No. 857 of Fend- 
ler's New Mexican collection seems to be a variety of this species, with only two or three closely 
approximated heads. 

JuNccs BUFONios, TAnn. Sp. p. 466 ; Kuntk, Fnum. 3, p. 353. Moist places, Sonora and 
California ; Thurber. 

LuzDtA CAMPESTEis, BO.; Torr. Bot. Whippl. Rep. p. 143. Tine woods near Monterey, Cali- 
fornia, May ; Parry. 

PON TE DERI AOEiE. 

HETEiiANTnBRA LiMosA, Vahl, Enum. 2, p. 44 ; Pursh, Fl. I, p. 32 ; Kunth, Emim. 4, p. 122. 
"Wet places along the Limpio, and at the Copper Mines ; also in Sonora ; flowering through the 
summer and autumn. (No, 1927, Wright.) 

ScHOLLEEA aRAMiMiFoLiA, WilU. Hcterauthera graminea, Vahl, I. c; Torr. Fl. N. York 2 
p. 313, t. 133. Near Matamoras, in Tamaulipas, on the lower Eio Grande, May ; Scliott. The 
specimens appear to have grown in very shallow water, or on muddy ground. The stems are 
scarcely an inch long, and the leaves are only about twice that length. 

HYDEOCHARIDACE^. 
LiMNOBiUM Spokgia, Rich, in Mem. InstU. 2, p. 66, ;. 8. Hydroeharis spongiosa, Bo>ic. Near 
San Antonio, Texas ; Schott. 

COMMELYNACEJi;. 
CoMMELYNA ViRGiNiCA, Linn. Sp. p. 61 ; Gray, Man. ed. 2, p. 486. C. angustifolia Midix. Fl. 
1, p. 24. Moist thickets and borders of rivers. Western Texas, New Mexico, and Ciiihuahua ; 
flowering throughout the season. 



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224 UNITED STATES AND MEXICAN HOUNDAKY. 

/3,? LATiFOLiA : foliia ovatia tenuibua "basi obtusia sutnmis cordatis glabris, vaginis ore ciliatia ; 
spatha subtriflora brevi roatrata basi eubturbinata. — Shady alluvions of the lower Rio Grande, 
September ; Scliott. Stem brancliing, {only the upper part seen,) glabrous. Leaves very thin, 
2-3 inches Jong, 1-1^ inch wide, acute. Flowers only 2 and sometimes a rudiment in one 
spatlia. Sepals and petals nearly as in C. Virginica, but the latter, Mr. Schott says, are white. 
"We need more specimens, in order to determine whether the plant is a distinct species. 

CoMMstYNA LiNBAEiB, {BenUh. PI. BuHw. p. 27, var, longispatua:) caule erecto-subraraoso ; 
foliis lanceolato-linearibus corapHcatis, margine Bcabro ; spatha terminali complieata longissime 
rostrato-attenuata ; pedunculis geminis, incluso S-lO-floro, exserto 1-2-floro ; petalo imparl 
seesili latcralibus paullo breviore. — Near the Copper Mines, New Mexico, August; Bigelow. 
(No. 700, (in part) 1923 and 1930, WdgJit. No. 864, FendUr.) Stem 1-2 feet high, with 
short axillary branches. Leaves 4-6 inches long, and about a quarter of an inch wide, tapering 
at each end, slightly pubescent ; the sheaths a little swollen, fringed at the orifice. Spatha 
pedunculate, cordate, not at all tarbinate at the base ; the narrow tapering somewhat recurved 
point 1-2 inches long ; peduncles of the spatha hispidly pubescent, the terminal one much 
esserted. Exserted flowering peduncle about an inch long. Exterior sepal ovate, acute, 
carinate ; the two lateral sepals united above the middle, obtuse. Petals bright blue, the 
lateral ones uuguiculate, the odd one about one-third smaller and sessile. Stamens 6; filaments 
all glabrous ; 3 of the anthers abortive and cruciform ; the others fertile, oblong, one of them 
larger and curved. Style long and slender, a little incurved toward the summit. Capsule 
oblong, one of the cells usually abortive, the other cells 2-seeded. Seeds oblong or roundish, 
corrugated. A well characterized species, remarkable for the long attenuated apex of the 
spatha. I first received it from Lieutenant Abort, of the United States army, who collected it 
on the Pecos river. 

TRAnEScAKTiA ViRGiKiCA, Linn. 8p. p. 412 ; Kunili, Eiium. 4, p. 81. Valley of the Limpio, 
July; Bigdoio. A glabrous narrow-leaved form. No. 1928 and 1929, Wright, are other 
varieties of this polymorphous species. 

Teadescabtia micrahtha (n. sp.): caule subramoso repente linea alterne pubescente ; foliis 
ovatis subamplexicaulibuB acutia glabris margine serrulatis, vaginis brevibus ore ciliatis ; 
umbella pauciilora sessili ; sepalis obtusiuecuHs ad carinam hispidulis.— Lower Rio G-rande, 
towards the mouth, October ; Schott. Stems flaccid, smooth, except the narrow alternate line 
of pubescence. Leaves about three-fourths of an inch long, and one-third of an inch wide, the 
two uppermost connate. Umbels only terminal in our specimens. Pedicels 3-8 lines long, 
nearly smooth. Flowers scarcely one-third of an inch in diameter. Sepals ovate-oblong, equal. 
Petals pale blue, one-third longer than the sepals, obovate-orbicular. Stamens 6 ; filaments 
all bearded ; anthers all similar and fertile ; the cells separated by a broad connective. Ovary 
obovate ; style long and slender ; stigma peltate-capitate. This species has the aspect of Oallisia 
repens. 

Tradescastia biasdra (n. sp.): caule subramoso erecto glabro, suporne nudo ; foliis remotis 
lanceolatis glabris margine ciliolato-scabris, floralibus brevibus acuminatis, vaginis ore nudia ; 
umbella sessili multiflora ; pedicellis villosissimis ; filamentis imberbi bus. —Mountains and 
moist, rocky places, Puerto de Paysano, September; Bigelow. (No. 700, Wright.) Stems 
12-18 inches bigh, moderately branched above. Leaves 3-5 inches long, and 6-8 lines wide. 



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BOTANY. 225 

acute, scarcely narrowed at the base ; the sheaths wide and short. Floral leaves connate and 
spreading horizontally, ovate, acuminate, cordate at the hase. XJmhel 20-40-flowered ; the 
pedicel densely clothed with long white hairs. Sepals ohlong, rather obtuse, smooth. Petals 
round ish-obovate, a little narrowed at the h&ne, deep rose-color. Filaments all smooth, two- 
thirds the length of the petals ; anther-cells separated by a wide connective. Style filiform ; 
stigma capitate-peltate. Cells of the capsule 2-seeded. 

Var. BREvnroLTA : caule prostrate ; foliis ovatis approximatig crassiuaculis glaucis, vaginis ore 
ciliatis.— Mountains near the mouth of the Pecos ; Bigdow. The general appearance of this 
plant is certainly very unlike that of T. leiandra, but the pedicels and flowers are so similar 
that I hesitate to separate it as a distinct species. 

Tradescantia ahomala (n. sp.): caullbus pluribus erectis ; foliis inferioribus angusto-lanceolatia 
basi attenuatis ciliatisque, superioribus ovato-lanceolatis subamplexicauUbus, supremo (spatha ?) 
cordato ; racemo terminali paucifloro brevipeduncnlato ; pedicellis brevibus glabiis ; sepalis 
ovato-oblongis acutiusculis carinatis ; petalia valde inequalibua, lateralibus orbiculari-obovatis , 
impari rhomboideo parvula ; staminibus 6 ; antlieris difformibus ; filamentis 3 superne, 2 basi 
barbatis, una imberbe. Shady woods on the Blanco, Comale, and other rivers, Texas ; Wright, 
(No. 699.) San Antonio, Texas ; Thurher. I have long had Texan specimens from Mr. Wright, 
from near Austin, &c. The species is intermediate between Tradescantia and Commelyna ; 
resembling tlfe latter in the unequal petals and difformed stamens aa well as in the terminal 
leaf or bract (which is like a spatha laid open) ; and the former in the 6 fertile stamena with 
bearded filaments. The plant seems to he an annual, and is a foot or 15 inches high. Lower leaves 
4-6 inches long, and half an inch wide in the middle, the tapering base fringed with a few 
long hairs, otherwise smooth ; upper leaves much shorter and rounded at the base. Peduncle 
4-6 lines long. Eaceme about 5-flowered ; pedicels short, with ovate bracteoles at the base. 
Sepals glabrous, green. The 2 lateral petals bright blue, nearly twice aa long as the sepals, odd 
one rhombic, white, less than one fourth as large as the others. The 3 stamens that are 
opposite the petals shorter than the others and furnished with oblong anthers ; filament of the 
one opposite the small odd petal beardless, of the 2 lateral ones bearded with purple hairs near 
the base. The other three stamens have smaller roundish similar anthers ; the filament of the 
middle one winged on each side, from the summit to nearly the base, with a membrane which 
is fringed with yellow hairs ; the other two filaments are bearded only near the summit. Ovary 
ovate, 2-celled, (one of the cells abortive,) with 2 superimposed ovules in each cell ; style long, 
slender, and somewhat curved above ; stigma capitate. Capsule oblong, cells 2.seeded. Seeds 
as in the rest of the genus. 

Tradescantia rhodantha (n. sp.) : caule erecto simplici glabro ; foliis linearibus complicato- 
falcatis utrinque glabris margine scabriusculis, vaginis ore imberbibus ; umbeilis terminalibus 
longe-pedunculatia solitariis compoaitis 3-4-radiatis ; umbellulis 3-4-fioris; pedicellis sepala 
exterioreque (antica?) vix hispidulis ; filamentis omnibus barbatis; antheris conformibus. 
Corallitas, Chihuahua, August ; Thurher. Root fasciculate. Stem 12-15 inches high, slender 
Leaves about 3, the sides folded together. Peduncle 4-6 inches long. In the axil of the upper 
leaf there is second small umbel. Primary rays of the umbel 1-1| inch long ; pedicels of the 
buds short and nodding ; of the flowers 6-10 lines long. Sepals ovate-oblong, rather obtuse. 
Petals bright rose-color, orbicular-ovate, about 4 lines long. Stamens half the length of the 
29 k 



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226 UNITED STATES AND MEXICAN BOUNDARY. 

petals ; filaments bearded with white hairs ; cells of the anthers renifornij separated by a broad 
connective. Style filiform ; stigma peltate-capitate. This species resembles T, rosea, but differs 
in the smooth sheaths, compound umbel, etc. No. 701 of Mr. Wright's Texan collection (1849) 
seems to be a dvvarf state of T. rosea, but our specimens are too imperfect for satisfactory 
comparison. 

CYPERACEAE. 

Ctpbrus diandrus, Ton: Cat. PI. N. York, p. JlO, (£■ Gyp. p. 251. Western Texas; Wright, 
(No. 1T49.) 

Cyperxis FLAVIC0MU3, Michx. Fl, 1, p. 27 ; Torr. I. c. p. 253. Sonora, Mexico ; Thurber. 
(No. 1965, WrigJit.) Our specimens are smaller than the usual form of this species, and the 
umbel is 2-4-rayed ; but in other respects there is no essential difference. 

Cyperus imoBOiiOHTus, Torr. p. 255. C. Gatesii, Torr. I. c. Western Texas ; Wright. A 
comparison of specimens from numerous localities shows the necessity of uniting these two 
species. 

Cyperus articulatus, Linn. ; Torr. I. c. p. 256. Western Texas ; Wright. 
Cyperus latekiflorus (n. sp.) : umbella capitato-contracta quasi laterali ; involucro diphyllo, 
foliolis valde inequalibus, uno longissimo erecto culmum desinente ; spiculis confertis liuearibua 
12-20-floris ; squarais parum remotis suborticulari- ovatis obtusissimis (ferrugineis) obscure 
trinerviis ; floribus diandris ; achenio obovato triqnetro pallido scabriusculo nitidulo squama 
subtequali ; stylo trifido. Along mountain torrents, east of Santa Oruz, Sonora ; Wright, (No. 
1950.) Annual. Culms ctespitose, about three inches high, triangular, slightly rough on the 
angles. Leaves shorter than the culm, rough on the margin. Involucre of 2 very unequalleaves ; 
one of the leaves nearly as long as the culm, of which it appears to be a continuation, the other 
scarcely one fourth as long. Umbel somewhat capitate and apparently lateral, sometimes with 
a single short ray. Spikelets 2-3 lines long. Scales light brown on the sides with a pale narrow 
margin and keel. Kachis very narrow and zigzag, slightly margined. Allied to C. fuscua 
of Europe. 

Cyperus Michauxianus, SchuUes, Mant. 2, p. 123 ; Torr. Gyp. p. 25^. Wot places, western 
Texas and New Mexico, westward to the Colorado. No. 1946, Wright, is a dwarf variety. C. 
speciosua, Vahl, or at least of Torr. Gyp,, of which we have Californian specimens collected by 
Rev. A. Fitch, ia, perhaps, only a luxuriant form of this species, in which the partial umbels 
are furnished with conspicuous involucels. 

Cyperus tktragonus, EU. Sk. 1, p. 71 ; Torr. Gyp. p. 261. Santa Cruz, Sonora; Thurber. 
Since this plant was noticed in the Monograph of North American CyperaccEe, I have seen the 
original specimens of Elliott, and have also received it from east Florida, Louisiana, and Texas, 
The umbel consists of 4-1 somewhat spreading rays, each bearing a narrowly oblong spike an 
inch or more in length. The spikes are either simple or they produce 1-3 smaller ones at the 
base. Spikelets very numerous, obtuse and somewliat quadrangular, crowded on the rachia and 
spreading horizontally, (or the lower ones reflexed,) about 2 lines long, usually perfecting 2 or 
3 achenia. Scales oblong, rather obtuse, light brown on the sides, with a narrow stripe along 
the obtuse keel. Stamens 3. Style deeply 3-cleft. Achenium oblong, triangular, dull, 



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BOTANY. 227 

embraced by tbe broad membranaceous margins of the rachilla, which at length separate and 
appear like 2 inner scales, in which character it accords with the subgcmis Papyrus. This 
species is allied to C. ligularis, Linn. 

Cypbrus DissiTiFLOiius, Torr. Gyp. p. 2(16. Western Texas ; WrigU. Resembles the last, but 
is a much smaller plant, with short rays and spikes; the spikelets acute, with narrower scales, 
etc. 

CrPERUS RBPBNS, Ell. 8h. 1, p. 69 ; Tor. Gyp. p. 264. C. phymatodes, Muhl. Gram. p. 23. 
Hills near the Copper Mines, New Mexico, and dry ravines on the Limpia, western Texas ; 
Bigeloiv. Sandy river-banks, San Luis Eey, California ; Farry. (No. 1948, WrigU.) 

CrPERUS SETiGERUS, ToTT. & Hooh. in Torr. Gyp. p. 434. Havinea near Eagle Pass, on the Bio 
Grande ; Biffdoiv. "Western Texas ; WrigU. 

Cyperus lutescbss, Torr. d Hooh. I. c. Western Texas ; WrigU, (No. 705.) Perhaps tuo 
near the last species. 

Cypbrus Baldwinii, Torr. Gyp. p. 70. Dry plains between thePecos and Devil's river; Bigelow. 

Cypbrl's trachysotus (n. sp.) : culmo valido foliisque glabro obtuse trigono ; umbella simpHci 
3-6-radiata, radiis valde inequalibns ; involucro 3-4-phyllo longissimo ; spicis subglobosis 
polystachyis laxiusculis, spiculis lanceolatis compressis 10-14-floris ; sqnarais parum remotis 
ovatis acuminatis apice subreeurvatis mucronatis, carina superne denticulato-spinulosa; stamina 
3 ; acheniis triquetris hasi attenuatis (nigris) squama duplo longioribus. Eavinea near the 
mouth of the Pecos and on Devil's river ; Bigelow, Schott. (Nos. 704 and 1943, WrigU.) I 
have this plant from Key West. It is a well marked species, and does not appear to have been 
hitherto described, 

Cypbrus filiculmis, VaU, Enum. 2, p. 328 ; Torr. Gyp. p. 267. Western Texas ; Wright. 

Cyperus ovdlaris, Torr. Gyp. p. 278. Mariseua ovularie, Vahl, Enum. 2, p. 374. Western 
Texas ; Wright. 

Cypbrus Haspah, lAnn. Sp. p. 66; Kunth, Enum. 2, p. 34. C. gracilis, Mukl. Gram. p. 18. C. 
leptos, SchuUes, Mant. 2, p. 105 ; Torr. Gyp. p. 273. Western Texas ; WrigU. 

Cypbrus Drummondii, To'rr. <& Hook, in Torr. Gyp. p. 437. Leone, western Texas ; Bigelow 
WrigU. Differs from Drummond's plant, in the somewhat compound umbel, longer rays and 
larger spikelets with the scales less closely set. We have specimens also from Louisiana and 
Florida, in which the umbels are compound, but the spikelets are smaller, like those of the 
original plant. 

Cyperus viress, Midix. Fl. I, p. 28 ; Torr. Gyp. p. 275. Moist ravines, western Texas and 
New Mexico, near the Eio Grande ; Bigeloio. 

Cypbrus arisiatus, Botih; Kunth, Enum. 2, p. 23. C, inflexua, Muhl. Gram. p. 16 ; Torr. 
Gyp. p. 274. Western Texas to California. (Nos. 1951 and 1955, WrigU.) A widely-spread 
species, including perhaps moat of the Cyperi belonging to the section Ariatati of Kunth, so far 
as we can judge from the charactera. 

Cypbrus Schweinitzh, Torr. Gyp. p. 276. C. Houghtonii, Torr I. c. Hills near the Copper 
Mines of New Mexico, and wet placea, Rock Creek ; Bigelow. (Nos. 703, 1944, and 1945 
WrigU.) Our numerous specimens show a gradual transition from C. Houghtonii to C. 
Schweinitzii, 

FuiRGNA SQUARROSA, Miclvc. Var. AKiSTULATA, Torr. Gyp. p. 291. Wet places, Leon Springs, 
liio Coleto and other places in western Texas. 



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228 UNITED STATES AND MEXICAN BOUNDARY 

Eleochaius EQurSBTOn>BS, ToiT. Cyp. p. 296. E. Elliotfci, Dietr. Spec. 1, p. 82, ex Kunth. 
Scirpus equisetoides, J?;L Sk. 1, p. 79. In water, borders of the San Felipe. Near the Eio 
Grande, October ; Bigehw. The nodes of the culm, especially on the upper part^ are much 
more closely approximated than usual. 

Eleocharis cbllulosa, Torr. Cyp. p. 298. Boggy banks of the Royo Zaquete, September ; 
Schoit. Eio Colezo, Texas ; Thurher. Kutenville in the same State ; Wright. We have speci- 
mens also from Key West, collected by Mr. Blodgett, 

Eleocharis palusteis, II. Brown, Frodr. p. 224 : Torr. Cyp. p. 299. Alluvial soils, in over- 
flowed places, from the Bio Grande to California. A variety with spikes nearly an inch long, 
and with only rudimentary bristles at the base of the nutlets, was found by Dr. Bigelow near 
San Elceario, on the Rio Grande. {Nos. 710, 712, 1934, 1957, and 1960, Wright.) 

Eleochaeis obtusa, SchuUes, Mant. 2, p. 89 ; Torr. Cyp. p. 303. Western Texas ; Wright. 

Eleocharis capitata, It. Brown, Prodr. p. 225 ; Torr. Cyp. p. 305. On the Eio Coleto, Texas; 
Thurher. (Nos. 1932 and 1933, Wright.) 

Eleocharis bostbllata, Torr. Fl. N. York, %,p. 347. Scirpus rostellatus, Torr. Cyp. p. 318. 
Pedro, Pinta, etc. Santa Eita del Cobra, New Mexico ; Bigehw. San BernanJinOj tSonora ; 
Tlmrher. (Nos. 1931, 1934, and 1956, Wright.) 

Eleochaeis TEHUis, Schultes! , var . ji. Torr. Cyp. p. 310. Western Texas; Wright, (No. 713.) 
In old spikes the scales are deeply bifid, and the divisions acute. The nutlets are pyriform, of 
a brownish yellow color, very obscurely triangular, with three slightly elevated lines at the 
angles. The bristles are only rudimentary. 

Eleocharis arbnicola, Torr. in Engelm. & Gray, PI. Lindh. p. 30. Western Texas ; Wright, 
(No. 1958 and 1959.) The plant is much taller (12-15 inches) than the original specimens, 
and the bristles are barely as long as the nutlets ; bnt in other respects there is no difference. 

Eleocharis aciculaeis, B. Broivn, Prodr. 1, p. 224 ; Torr. Cyp. p. 308. Western Texas to 
California. Wright's No. 1937 is a small form, growing on wet ground. 

Scirpus Olneyi, Gray, in Engelm. (& Gray, PI. Lindh. p. 30, (adn.) d Man. ed. 2, p. 499. 
Copper Mines, New Mexico, Bigelmo. San Bernardino, Sonora ; Thurher. (No. 1964, Wright.) 
The style is sometimes 3, and even 4-cleft. 

Scirpus pungexb, Vahl, Enum. 2, p. 255 ; Gray, Man. I. c. Erontera, Texas ; Parry. (No, 
1941 and 1963, Wright.) The spikes are oblong or sometimes almost cylindrical, and the style 
is more frequently 3- than 2-cleft, 

SciEPUS LACUSTRis, iJTiH.; Torr. Cyp. p. 321. S, validus, VaM, Enum. ^,p. 268. S. acutus, 
M%H. Gram. p. 33. On the Bio Grande and its tributaries, from El Paso to San Jose, and 
westward to California. On the valley of the Sacramento, Dr. Hulse, there are thousands of 
acres covered with this plant, and of the height of 9 or 10 feet. It is called Tvla or Giant rush. 
It varies much in the size of the panicle. The pcrigynons bristles are mostly narrow and 
retrorsely hispid, but sometimes broad and retrorsely or horizontally plumose. These characters 
are not constant, there being intermediate forms. Bentham refers No, 2021 of Hartweg's Cali- 
fornian collection to S. riparias, Presl, which Kunth regards as identical with Elytrospermum 
Californicum, G. A. Mey. ; which again is the same as the earlier Malacochete of Nees. In our 
specimen of Hartweg's plant there are four plumose bristles, while Meyer states that there are 
but two in his Elytrospermum. The number of these organs is, however, by no means constant 
in this genus, and in every other respect Elytrospermum resembles the form of 8c. lacustris with 



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broad plumose seliB. Scirpus lacustris of ihe old world is said to differ from ours in having a 
3-cIeft style, but iu our aatheutic European specimens the style is 2-cleft. 

Scirpus makitimus, Linn.; Torr. Gyp. p. 323. On the Rio Grande, and westward along the 
Gila to the Colorado. (No. 1942 and 1962, Wright.) The long creeping rhizoma produces one 
or more ovate farinaceous tubers about an inch in length. They are white inside, and covered 
with dark brown scales which terminate in long filaments. 

FiMERisTYLis SPADICBA, Vaftl, Enum. 2,^. 294; Torr. Gyp. p. 316. F. cylindrica, Valil, I. c. 
Leon Springs, western Texas ; Bigdow. 

IsoLEPis CAPiLLAEis, Roem. d SchuUes, Syst. 2, p. 118; Torr. Gyp. p. 350. Fimbristylis capil- 
laris, Gray, Man. ed. 2, p. 503. Oak woods on the Colorado, Texas; W-rigU, (No. 1936 in 
part.) Var. culmo l-2-8tachyo. Base of the Limpio mountains, and near the Copper Mines of 
New Mexico; Bigelow. (No. 1936, in part, Wright.) Culms 3-6 inches high, often bearing 
only a single spike, and very rarely more than two ; the primary one solitary and the other on 
a ray 2-3 lines long. Involucre of two very unec[ual leaves, one of which is longer than the 
ray, the other mostly shorter than the sessile spike. Scales and nutlets as in the ordinary form 
of the plant. 

DicHROMEKA LEUCOCEpHALA, Michx. Fl. 1, p. 37 ; Torr. Gyp. p. 357. Near the Guadalupe 
river, above Victoria, Texas ; Schoti. (No. 716, Wright.) 

HE3IICARPHA SUBSQUARROSA, Nees, Gyp. in Endl. & Mart. Fl. Bras. p. 61, f. 4, f. 1 ; Torr. Fl. 
New York,2,p.3&2. Scirpus subsquarrosus, JfWJ. (?mm.^). 39. Isolepissubsquarroaa,*S'c/irad.; 
Torr. Gyp. p. 51. Hills near the Copper Mines of New Mexico. (No. 715 and 1936, Wright.) 

Clamum EPFUSUM, Torr. Gyp. p. 374. Schoenus effusus, Swariz; Muhl. Gram. p. 13. Wet 
places in elevated valleys on the Limpio ; Bigehio. Western Texas ; Wright 

GENUS CAREX. 

BY PROFEHSOE C. DEWEY, 

Carbx Hoodii, Boott, in Hook. Fl. Bor.-Amer. 2, p. 211, t. 211. Copper Mines, New 
Mexico; Bigelow. 

Carex Douglasii, BooU, I. c. t. 214. Copper Mines and other parts. New Mexico; Bigelow. 

Carex marcida, Boott, I. c. t. 213. Kiver banks near San Luis Key, California, March ; Farry. 
San Bernardino^ Sonora, and along the Gila, June; Thurier. Camp Tezotat, Sonora; Thurber, 
Schott. 

Carex siccata, Dewey in Sill. Journ. 29, p. 2T8, t. F. f. 18, & 14, p. 353. C. pallida, Meyer. 
Chihuahua ; Parry. 

CXBEs.¥ESiTV A, Dewey in Sill. Jour. 22, p. Sol, t. W. f. 71, Monterey, California, April; 
Farry. 

Carex cephalopjiora, WilU. Sp. A, p. 220. In woods, western Texas ; Wright. 

Oakex liooK^mk-SK, Dewey in Sill. Jour. 29, jp. 248, (. X.f. 75. Copper Mines and Rio Mim- 
bres. New Mexico ; Bigelow. The specimens are numerous, large and small forms, and are well 
characterized. 

Carex LiDBONi, 5oo;;, iw Hook. Fl. Bor.-Amer. 2, p. 214, t. 215. Copper Mines, May; 
Thurber. 

Carex monhcola (Dewey): spiels distinctis erectis brcviusculis oblongis ; starainifera terminali 



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'^30 UNITED STATES AND MEXICAN BOUNDARY. 

solitaria inferne teretl brevi-bracteata cum equamis oblongis obtusiuseulia dorso excepto cas- 
taneis; pistiliferis 2-sublaxifloris, superiore sessili illi eontigua, iufima interdum sub-remota 
vaginata exserte peduneulata ; perlgyuiis 2- vel raro 3-stigmaticis lato-ovatia oblongis convexo- 
concavis acutiusculia vix roatratis ore integria vel aubbifidis aubvillosia nervoais, squama lato- 
ovata acuta vel inferiore mucrouala paulo longioribus ; foliis vaginatis culmum superantibua.— 
Mountains east of San Diego, California, Parry. OuIeq 8-10 inches high, scabrous above, leafy ; 
leavea flat, rough on the edges, sbeathed to the base and longer than the culm ; the lower scales 
of the perigynium sometimes mucronate and equal to it ; the achenium ovate or obovate and 
convex above. In species where the stigmas are commonly two but sometimes three, the ache- 
nium has the lenticular shape belonging to two stigmas, probably the other stigma being 
abortive. 

Carexbecta, Boott; Hook. Fl. Jior.-Amer. 2, p. 220, t. 222, no. 95. Rio Mimbres, New 
Mexico, May ; Thurher. 

Carex striciior, Dew. C. stricta, var. strictior, Carey rii Gray's Man. Kio Mimbres, New 
Mexico, May ; Thurber. 

Carex stricta, Lam. Kio Mimbres, New Mexico, June ; Bigeloio. 

Carex Emoryi (Dewey) : apicis staminiferis terminalibus ternis oblongis cylindraceia erectis, 
auperiore longiore brevi-pedunculata, inferiorihus seasilibus brevioribus illi eontiguia brevi-brac- 
teatia, densifloria, omnibus cum aquamis oblongis obovatia obtusis castaneis ; spicis pistilliferia 
4 longc-cylindraceia densifloris sessilibus longo-foliaceo bracteatia, superioribus apice stamini- 
feris, infima omnino fertili et subremota; perigyniis distigmaticis ellipticiabasi teretibus apienlatia 
vel brevi-rostratJB ore integrie squama ovata oblonga subacuta duplo longioribus ; culmo auperne 
scabro; bracteis evaginatis margine scabris; planta pallido-viridi vel glauca.— The staminate 
spikes are rather short and contiguous, the upper longest and sub-clubform ; pistillate spike 4, 
rather long, 1^-2 inches, cylindric, erect, aessile, staminate at the apex and bracteate^ the lowest 
wholly fertile and slightly aheathed and nearly sessile ; perigynium narrow- elliptic, tapering 
below, flattish, obovate and apiculate or short and round, rostrate, at the orifice entire, stigmas 
two ; pistillate scale ovate, oblong, acutish, halfaslongaa the fruit; culm triquetrous, scabrous 
above ; bracts scabrous on the margin, long and leafy and surpassing the culm, whole plant 
pale green or glaucous. On the upper Rio Grande ; Bigelow. 

Carex DBCIDUA {Boott. in Linn. 3Va?iS. 20, ^. 119): spicis 3-6 erectis cylindraceis graciiibus 
atro-purpureis, suprema staminifera brevi-pedunculata clavteformi omnino stamina habente vel 
B^pe basi aut interdum medio pistillifera, cum squamia oblongis obovatis obtusis dorso albi- 
nervoaia ; pistilliferis 1-5, interdum 1-3, sessilibus bracteatis, superioribus 1-3 brevibua parvis 
contiguis apice staminiferis, inferiorihus 2-3 longioribua subremotis foliaceo-bracteatia ; 
perigyniis distigmaticis oblongo-ovatis vel partim obovatis rostellatis inferne teretibus nervatis 
ore integris, squama oblonga obtusa dorso pallida aubduplo longioribus. Banks of rivera 
Santa Barbara, California ; Parry.— GvUm 1-1^ foot high, triquetrous and very rough on the 
edges above, leafy towards ihe root, and sheathed, rather slender ; staminate spike single, about 
1^ inch long and rather thick, short-pedunculate, often pistillate at the base, and sometimes 
in the middle, or both, the rest destitute of pistils ; pistillate spikes erect, sessile, rough- 
bracteate, varying in number, sometimes 1-3 short and approximate, and near the staminate 
having stamens at the apex with two or three and longer spikes below not androgynous, some- 
times only two or three pistillate spikes, of which the upper is short and the lower longer and 



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liOTANY. 231 

more remote ; stigmas two ; perigynium ovate-oblong or obovate, very short rostrate, 
entire at the orifice, nerved and lens-like, scarcely stiped ; pistillate scale oblong, ohtuse, pale 
on the keel, and near twice as long as the fruit, 

Carex Barbarje (Deivey): spieis staminiferis terminalibus 2 raro 3 erectis cylindraceis, 
suprema longa pedunculata, inferiore breviore illi contigua, infima sub-elongata ; pistilliferis 3 
longo-cylindraceis, 2-4-unciaUbu8 gracilibns, snperiore apice staminifera brevi-hracteata erecta, 
inferioribus longioribus subremotis subrecurvis basi laxifloris brevi-vaginatis foliaceo-bracteatis, 
omnibus nigro-pnrpureis ; perigyniis distigmaticia oblongis obovatis apiculatis ore integris, 
squama oblon^o obovata dorso pallida mucronata brevioribus ; culmo erecto glauco longe- 
foliato vaginatoque. Banks of streams, Santa Barbara, California ; Parry. — Calm 16-20 
inches high, erect, with long leaves towards the base and long leafy bracts above, glaucous ; 
spikes 3-6, eylindric, slender, blackish-purple ; starainate terminal 1-3, commonly 2, the upper 
nearly two inches long, pedunculate, the lower sessile, contiguous and shorter, the third longer 
than the last and more remote ; pistillate 3, long-cylindric, 2—4 inches long, slender ; the upper 
staminate at the apes, short-braeteate, erect ; the lower longer, subremote, subrecurved, loose- 
flowered at the base and short-sheathed ; perigynium oblong-obovate, short-rostrate, entire at 
the orifice, stigmas 2, pistillate scale oblong-obovate, on the back pale, and the nerve extended 
into a mucronate point, making the end of the scale sometimes emarginate, The locality gives 
the name of the species. 

Carex Schottii (Dew.) : epicia staminiferis terminalibus 3-5 erectis nigro-rubris approximatis 
prope geminatis cylindraceis, superiore longa 3-unciali medio inflata, inferioribus brevio- 
ribus sessilibus contiguis vel infima remotiore et inferdum geminata ; pistilliferis 3 raro 4 
perlongo-cylindraceis gracillimis 6-8 uncialibus pevlaxifloris iniequaliter pedunoulatis, inferi- 
oribus longe peduncuiatis folioso-bracteatis basi vaginatis vix fructiferis vel abortivis, cum 
squamis oblongis arctis obovatis vix acutis; perigynio carente vel nimis immaturo ; culmis 
superne scabris subproatratis ? cum foliis hracteisque viridi glaucis. Banks of rivers, Santa 
Barbara, California ; Parry. — This species has very variable spikes and form, as the description 
shows ; spikes 6-8, eylindric ; sometimes staminate 5 and pistillate 3, sometimes 4 and 3, some- 
times 3 and 3, or again 3 and 4, most of which are long, and some very long ; the staminate 
upper 3 are approximate, so as to be almost geminate, the highest 3 inches long and ventricose 
in the middle, and the lower a little remote and shorter, often one lower and a little remote and 
rather long, and on one specimen geminate and one quite short ; the staminate scale oblong, 
obovate, dark red and pale on the back ; pistillate spikes 3, rarely 4, very long and slender, 4-8 
inches, very loose-flowered, unequally pedunculate, the lowest long pedunculate and long 
vaginate, all leafy bracteate, with scarcely the rudiment of fruit, or abortive, and with a 
narrow, oblong, obovate scale scarcely acute ; perigynium wanting, or too immature ; culm 
triquetrous above and scabrous, with glaucous leaves and bracts. This species has some afiinity 
to C. Darwinii, Boott. in Trans. Linn. 20, ^. 120, but the numerous difl'erenccs far separate the 
two. There may have been some crushing of the culms to account for their proatrate appear- 
ance, without which, at least, the pistillate spikes must have been long-retrocurved as in C. 
pendula, Gooden. 

Carex phtllostachys, Meyer, Trans. Acad. 8i. Petersh. Collected in California by Dr. 



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232 UNITED STATES AND MEXICAN BOUNDARY. 

Parry. Clearly diatinct from Cacex G-eyeri, Boott., and closely related to Carex Wildenowii, 
Schk. 

Cases umbellata, Schk. Car. II, p. 75, t. Wio w. fig. 171, var. victna, Dew. in Sill. Journ. 
9, p. 31, c6 11,^1. 316, t. D. f. 13. Often with three pistillate spikes near the staminate spike, 
as well as the radical spikes, on the same tuft. Woods on the Colorado and Blanco rivers, 
Texas; Wright, la both these localities, the plant described and drawn hy Schk., and the 
variety also abound together, the latter most common. 

Oakbx Tiiueebbi {Deioey) : spicis 4 oblongo-cylindraceis pedunculatis foliaceo-hracteatis ; 
apica staminifera terminali solitaria sublonga cum squamis oblongis obtosis mucronatia fulvis ; 
pistilliferis 3 suhcrassis vix nutantibus densifloria sub-approximatis, superioribus vix vaginatis, 
infima cum podunculo sublongiore vaginato exserto ; perigyniia tristigmatieis ovato oblongis 
mnlto-nervosis subventricosis brevi-conico-roatratis bidentatis sijuama hrevi-oblonga obtusa 
dorso trinervata scabro-ariatata longioribus vel basi spicarum brevioribus ; cnlmis et foliis mar- 
gine scabris. — Mabibi, Sonora, June ; Thfrber. — Culm two feet high, erect, scabrous above and 
smooth below the apikes, leafy towards the base ; upper leaf vaginate and long as culm, and 
with the leafy bracts rough on the edges ; ataminate spike single, erect, long, and bracteate ; 
pistillate spikes three, oblong, cylindric, thickish, densely flowered, pedunculate, the lowest 
vaginate, with an exsert peduncle ; stigmas three j perigynium ovate or oblong, many-nervedi 
tapering iato a shortish beak, bidentate, some inflated or ventricose ; pistillate scale short, 
oblong, obtuse, scabrous cuspidate, shorter than the fruit, except at the base of the spikes ifc is 
longer. This differs much from C. liystricina, Willd., to which it is related. 

Oarex hystricina, Willd. Spec. Plant. 4, p. 232. On the banks of the Limpio, Texas ; and at 
Santa Eita del Cobre, New Mexico ; Bigelow. 

Carex Wrightii (Deioey): spicis staminiferis 2; rare 3; oblongo cylindraceis erectis, 
terminali longiore brevi-pedunculata, secunda brevi ilia contigua sessili raro remotiuscnla, tertia 
remotiore, omnibus bracteatis cum squama oblonga acuta castanea inferne aristata ; spicis pistil- 
liferis 2-3 oblongo cylindraceis gracilibus sublaxifloris remotia cxaerte pedunculatis, superiore 
apice staminifera evaginata, infima longe vaginata et longe exsorta, omnibus foliaceo-bracteatis ; 
perigyniis tristigmatieis ovatie subconicia subtriquetris brevi-rostratis multo-nervatis ore bilabi- 
atis subscabris vix ventricosis squama ovato-oblonga cuspidata paulo longioribus vel inferne 
paulo brevioribus. In woods on the Colorado of Texas, and near the Rio Grande; Wright. 
Culm about a foot high, erect or flaccid, with snhradical flat nerved vaginato leaves and leafy bracts 
nearly equalling the culm ; spikes 3-6, oblong-eylindrie ; staminate 2, upper an inch long and 
pedunculate, the lower one-third as long and commonly close tD it, rarely a third, which is 
romotish, and all bracteate ; pistillate spikes 2-3, remote and pedunculate, the upper staminate 
at the apex, the lower longer pedunculate and exsert ; all rather loosely flowered, especially 
towards the peduncle ; stigmas three ; perigynium ovate, snb-conic, slightly triquetrous, short 
and round, rostrate, many-nerved, bilabiate and subscabrous ; scale ovate-oblong, rough cuspi- 
date, a little shorter than the fruit, except on the lower part of the spike where it often surpasses 
the fruit. Differs from C. scabrata, Sckto., to which it ia nearly related iu the number of 
staminate apikes, and in various particulars of the fertile spikes and their fruit. Named after 
Mr. C. Wright, one of the exploring party, 

Carex lanuginosa, Michx. Flor. Bor.-Amer. 2, p. 175. Rio Mimbres and Santa Rita del 
Cobre, New Mexico ; Bigdoto, TImrba: 



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BOTANY. 233 

EQUISETACE^.* 

Equisetum arvense, Linn. ; Parsh, Fl. 2, p. 651 ; Braun <& Engelm. in Sill. Jour. 46, p. S3 ; 
Torr. Fl. N. Yorh, 2, p. 480. Near the Mimbres, New Mexico ; TImrber. Small sterile 
specimens, 

Equisetum LJEvraATUM, Braun .6 Engelm. I. c. Banks of the Bio Grande, near El Paso, and 
near the Coper Mines. 

Equisetum robusium, Braun <£ Engelm. I. c. Banks of the Hio Grande. 
FILICES. 

WooDWARDiA KADicANS, Willd. Sp. 5, p. 418 ; Hooh. & Am. Bot. Beech, p. 162 d- 405. W. 
Chamissoi, Brack. Ferns of the V. S. Expl. Exped. p. 138. Between San Diego and the 
Colorado ; Schotl. 

Adiantum Capillxis-venbris, Linn. ; Hook. Sp. Fil. 2, p. 36. From San Antonio to the Rio 
Grande, and northward to New Mexico ; common along running streams. 

Adiantum Ciiilehse, Kaulf. Enum. p. 207 ; Hook. I. c. p. 43. California, Texas ; Wright, 
(No. 2123.) 

Var. ntRSUTUM, Hooh. I. c. p. 43, t. 75, B. A. pilosum. Fee, Gen. EH. p. 118. Rocks near 
the month of the Pecos ; Bigelow. 

Pteris AQuruNA, Linn. Var. ^. lanuoinosa, Hooh. Fl. Bor.—Am. 2, p. 263 ; Brack. I. c. p. 
119. P. lanuginosa, Eooh. <& Am. Bot. Beech, p. 405 ; Agardh, Gen. Pterid. 51. ? Between 
San Diego and the Colorado ; Schott. 

Pbll^a ELEXUOSA, iirai. FH. Sp. p. 60; Fee, Gen. Fil. p. 129. Allosorus, Kmse ; Schk. 
Fil. Supp. 1, j3. 46, t. 23. Pteris, Hook. Ic. PI. 2, t. 119. On running streams near the Kio 
Grande, and along the San Pedro and the Gila. {No. 825, Wright.) 

Pbll^a andromed;bfolia, Fee, I. c. AUosorns andromedaBfolius, Kunze, Anal. Pterid. p. 18, 
(. 11. Pteris, Kaulf. Enum. Fil. p. 188. Between San Diego and the Colorado ; Sdtolt. 

PELtiBA ruLCHELLA, Fee, I. 0. AUosorns pulchellns, Mart, d Gal. Fil. Mex. p. 47, t. 10, Jig. 

1. A. formosus, Liebmann, Mex. Breg.p. 68. From Howard's Springs and the Pecos to the 
San Pedro and the Waterholes ; Bigeloto, Schott. (No. 824, Wright.) 

Pell^amucrohata, AllosoTUB mucrona,tus, B. O. Eatonin Sill. Jour. (ser. 2,) H, p. 138- Torr. 
Bot. Whippl. Rep. p. 160. Pelliea Wrightiana, longimucronata, & Ornithopus, Hook. Sp. 
Eil. 2, p. — , (. 115 & 116, {ined.) On rocks from the Eio Grande, westward, to the Colorado 
and California. (No. 2130 and 2131, Wright.) This fern varies in height from two inches to 
over a foot. In its simplest state the upper pinna; are trifoliate, and the lower qiiinquefoliate ■ 
from this it varies to a state in which the secondary rachis bear numerous and minute trifoliate 
pinnules. Some of the forms resemble P. ternifolia. Link. I. c, (Pteris ternifolia. Hook, d 
Grev. Ic. Fil. 2, (. 126,) but have not the narrow linear outline of that species, nor its obovate- 
cuneate sterile pinnules. 

Pell^a atkopurpurea, Jjink. I. c. Pteris atropnrpurea, WiUd. Sp. PL 6, p. 375; Pursh I. c. 

2, p. 668. Platyloma atropnrpurea, J. Smith; Torr. Fl. New York, 2, p. 488. AUosorns 
atropurpureus, Presl. Tent. Pterid. p. 153. ; Gray, Manual, 2d ed. p. 591 Along the Mimbres 
New Mexico ; Bigelow. 

" This and the following orders of Acrogens were elaborated by Daniel C. Eaton, esq., of the Sfiienlific Salioolof Yale Coiloffi, 
The Grasses will be the subject of a separate report, to bo published in the Smithsonian contributions. 
30 k 



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23i UNITKD STATEB AND MK \ICAN DOUNDAKY 

CiiEiLANTiiES WmonTir, Rook. Sp. Fil. 2, p. 87, 1. 110, A. Near the Rio Grande and the Gila. 

CiiEiLASTiiES Alabamessis, Kun%e in Sill, Jour, (2d ser.) 6, p. 87 ; Hook. I. c, p. 89, t, 103, B. 
Bocliy and sliady ravines, at the month of the Pecos ; Bigelow. On the lower Bio Grande, Sohott, 

Cheiunthes tombntosa, Link. I. c J3. 65 ; Hook. I. c. p. 96, (. 109, A. From the Rio Grande 
westward along the Gila to the Colorado. 

Cheilantues lanosa, 0, vestita, Hook. I. c, p. 98, t, 108, B. Nephrodium lanoaum, Michx. Fl. 
Bor.-Am. 2, p. 270? Myriopteris gracilis. Fee, I. c. p. 150, t. 29, /. fi. Along the Eio Grande ; 
Wright, The name of 0. vestita iinquestioaably helongs to the fern described and figured by 
Professor Gray under that name in the Manual, {2d ed.) p. 592, t. 10. 

OiiEiLANTiiES LmDHBiMERi, Hook. I. c. p, 101, t. 107, A. At the Copper Mines and in Wild- 
rose Pass ; Bigelow, Scliott, 

CiiEiLANTnBS Fehdlbri, Hook. I. c. p. 103, t, 107, B. Near the Copper Mines, New Mexico ; 
Bigelow, Sonora; Farry, Some of the specimens are fully a foot high, and have the pinnjw 
more remote than usually, 

CiiEiLANTHES ASPEBA, Hook. I, c. p. Ill, I, 108, A. Lower Kio Grande; Sclioit. Near the 
Copper Mines and along the San Pedro ; Bigelow. The characters of a new species of this 
interesting genus are subjoined. 

Chbilanthes gracUiLIMA (sp. nov.) : fronde lineari-oblonga bipianata; pinnis pinnuliscLue con- 
fertis, pinnulis sessilibus ovatis obtusis superne pauciter albo-pilosis subtus tomento denso fulvo 
obtectie, margine reflexo involucrem continuum efficienti. — Stipites ebenei plures ecaudice 
paleaceo subrepente erecti. Rachides primarii secundariique cum stipite juniore paleis gracilibus 
instruct!. Cascade mountains of Oregon at 7,000 feet of altitude, latitude 44°, collected by Ur. 
Newberry in Williamson's Expedition, and by Dr. Bigelow in Whipple's Expedition. A very 
delicate little fern of the Lendigera group. Stipes 2-3 inches long; frond half as long, and 3-5 
lines wide ; pinnje 7-10 pairs ; pinnules 2-3 pairs. 

HyroLEPis Califobnioa, Hook. I, c. p, 71, t. 88, A. Collected between San Diego and the 
Colorado ; Svliott, 

NoTHOcnL/BNA RUFA, var. ;9. Fresl, Beliq, Rmnhe, 1, j^. 19; Blartens& GaleoUi, I. c. p. 45; Leib- 
mann, I. c. p. C2. Cheilanthes ferruginea, Willd. Herh.; Link, I. c, p. 65. Along the San Pedro 
and Rio Grande, and on the Organ mountains of New Mexico. 

NoTirocHL^ENA siNUATA, Kuulf. I. c. p. 135) Kunze in Sckk. Fil. Supp. \,p. 95, t. 65. Acrosti- 
chum, Swartz, Syn. p. 14. Western Texas from San Antonio to the Pkio Grande, and along 
that river northward to New Mexico. C. Wright, No. 814, (1849.) A variety of this species 
having smaller and crenated, not pinnatifid pinnse with whiter ciliated scales beneath, and a 
denser stellate pubescence above, looking through a lens like newly fallen snow, was collected 
in rocky places near the San Pedro and the Gila, 

NoTHOCHLiBSA PULVBKACEA, Kunze in Linnma, 13,^. 135, & 18,^. 338; Liebmann, Mex. Bregn. p. 
63. Lower Rio Grande; Schott. Rocky places on the Pecos and San Pedro; Bigelow. No. 
820 and 2124, Wright. Kunze and Liebmann consider this distinct from Cheilanthes pulveracea, 
Fresl, Bel. Hcenk. 1, p. 64 ; Hook. Sp. Fil. 2, p. 78. 

KoTHOCHL^ajJE CEifiTACBA, Lithmann I. c. p. 64? At Tainted Camp and at the entrance to 
Wild-rose Pass; Bigelow, Schott. G. Wright, No. 821, (1849.) Our plant agrees well with 
the description cited, but has not been compared with authentic specimens. It grows in tufts 
about 6-8 inches high, and has much the appearance of Gymnogramme triangularis, Kaulf.; 



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BOTANY. 235 

the frond being five angled and covered beneath with a dense light-yellow farina. Stipes stout, 
reddish brown and shining ; frond 1-2 inches lon^ and fully as wide. 

NBUHOflRAMMB PEDATA, LMc, FU. 8p. p. 139 ; Fee, Gen. p. 168. Hemionitis, Swarlz, Syn, 
Fil. p. 20 c6 209, t. l,f. 3. Along the Eio Grande, San Pedro, and G-ila; mostly on rocks. 

Gtmnogramme triangularis, Kawlf. Enum. p. 73 ; Hoo3c. <& Grev. 2c. Fil. t 153 ; Hook. Fl. 
Bor.-Am. 2, p. 259. Between San Diego and the Colorado ; Schoti. 

AsPLENiUM SBPTESTRioNALE, Hoffmann, Deutscldands Flora, 2, p. 12; Ilooh. & Am. Brit. Flor. 
ed. T, p. 588 ; Lindley & Moore, Nature Printed F&rns, t. 41, C. On Ben Moore, New Mexico, 
May ; Bigelaio. (No. 2122, Wright.) 

Asplenium.Triotomanbs, Linn.; Torr. Fl. New York, 2, p. 491 ; Lind\. <& Moore, I. c. t. 39. 
New Mexico ; Wright, (No. 2121.) 

AsPLESiTJM EBEiSBiiM, WHld. Sp. PL 5, p. 329 ; Pursli, Fl. 2, p. CC6 ; Torr. Fl. Neio York, 2, 
p. 492. In the Great Canon of the Eio Grande ; Parry. 

PoLYPODiUM OALiPORNrcUM, Kaulf. Fnum. p. 102 ; Rook. & Am. Bot. Beech, p. 161 d- 405 ; 
Hooh. FL Bor.-Am. 2, p. 258. {Exd. Syn. Hook. & Grev. Ic. FiL t. Sf!.) San Diego; 
Bigeloio. 

POLYPODIL-M racANCTM, WHld. Sp. PL 5, p. 174 ; Piirsh, FL 2, p. 659 ; Gray, Manual, p. 590. 
On igneous rocks near the Great Caiion of the Eio Grande ; Parry. 

Lastrea PATENS, Presl, Tent. Pterid. p. 75; Liebmann, L c. p. 119. Aspidium, Swz.; Willd. 
Sp. PL 5, p. 244; Hook, d Arn. Bot. Beech, p. 162. A. moUe, Kumein SUL Jour. {ser. 2) 6, 
p. 83. Common in western Texas and near the Rio Grande. This fern is found from Florida 
to Texas and in California, {BoL Beech. L c.) Our specimens agree with those from the Kew 
Gardens in Herb. Gray, and do not present the venation of Nephrodium molle so well shown 
in Schott's Genera FiUcum. 

Lastrba arguta, Brack. L c. p. 196. Aspidium argute, Kaulf. L c. p. 242 ; To^-r. BoL WhippL 
Pep. p. 160. Between San Diego and the Colorado. In Lindley <& Moore Nat. Print. Ferns, 
18, tins is said to bo only a larger and more developed form of L. rigida, Presl. 

PoLYSiiciiuM MtiNiTUM, Presl, L c. p. 83; Braek. L c. p. 203. Aspidium munitum, Kaulf. L c. 
p. 236; Hook. FL Bor.-Am. 2, p. 261. Between San Diego and the Colorado. 

Phakbropiilepia nobilis, Presl, L c. p. 85 ; Liebmann, L c. p. 124. Aspidium nobile, ScUecht. 
Linnaia5,p. 610; Kunze in Sohk. FiL Sapp. l,p. 155,^.67. A. pamiijim, AtarL dGaLLc.p. 
64, t. 17, /. 1. Hueco tanks in western Texas, and at Van Horn's Well. 

WooDSiA OBTirsA, Torr. OataL pL N. Y. FL N. Y. 2, p. 500; Hook. Sp. FiL 1, p. 62. 
W. Perriniana, Hook. <& Grev. Ic. FiL t. 68. Hills near the Copper Mines. The specimens 
are all small, and the pinnules are crisped and glandularly ciliated. The same form occurs on 
the Columbia river. 

Anemia Mexicana, Khtsch in Linncea, 18, p. 526 ; Kwme in Schk. FU. Supp. % p. 76, t. 131 • 
Hook. Ic. PL 988. Clefts of rocks in a deep arroyo near the mouth of the Pecos, and at Medina 
creek. (No. 826 and 2117, Wright.) 

LYCOPODIACEiE. 

Selaginella rupestris, Spring, Monog. Lycop. 2, p. 55. Lycopodium rupestre, Linn.; Hook. 

Fl Bor.-Am. 2, p. 267. Along the Eio Grande at Eagle Pass and at the mouth of the Pecos 

&c.;Schott,Bigeloiv. (So. 211G, Wright.) Ys^r. jS. Hook. L c. exd. syn. Fred. S. struthioloidea 

Torr. Bot. WhippL Pep. p. 159, excL syn. PresL Mountains near El Paso; Wright. Organ 



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236 UNITED STATES AND MEXICAN BODNDAEY. 

mountains, New Mexico ; Bigeloio. Lye. strnthioloides, Presl, referred by Hooker, and follow- 
ing him by Dr. Torrey, to the elender variety of the above, was considered by Spring (I. c. l,p. 32) 
a form of Lye. taxi/oUum, though he says he did not carefully examiue the original specimen in 
the Imperial herbarium at Vienna. 

Seiaginella lepidophylla, Spring, I. c. p. 12. Lycopodium lepidophyllum, Hook. Ic. PI. 2, 
t. 162, 163. In the valley of the Kio Grande, and near the Sau Pedro, mostly on lime rock. 
O. Wright, No. 2114, (1851-2). 

HYDROPTEEIDES. 

Maksilea uncinata, a. Braunin Sill. Jtmr. (2d ser.) 3, p. 55. New Mexico ; Dr. Bigelow, 
No. 166. 

Marsilea vestita, Hooh. <& Grev. Ic. Fil. i. 159. San Elceario on the Rio Grande and 
elsewhere in weatern Texas. C. Wright, '^o. 1112, (1851-2). 

Marsilea macropoda, A. Braun, I. c. Westeru Texas and along the Rio Grande. C. Wright, 
No, 2111 (1851-2). 

AzoLLA Carolihiana, Willd. Sp. 5, p. 541 ; Torr. Fl. N. York, 2, p. 513. Rio San Antonio, 
and Rio Gila. 



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INDEX, 



Abios Doiiglaaii 
Abruuiu areimna 

cyplopteri 
fragrana 
melliferit 
tnmraiUh i 
umbellata 
Abutilon cnipum 



parvulum 
Teiense 
Thurberi 
Acacia Covema 



Conlten 

craasifolia 

(uapidata 



llt'xuoaa 
Cregsii 

rigid uln 
Bcenieriana 
Schottii 
tephrolobs 

Wrigbtii 
A( fan pinnatifida 
Acalfpba Carolmiana 
gracilene 
hederacea 
phleoidei 

radians 
Virginica 
AcaDthac«% 
AeanthochiUiQ Wiigbtu 
Acantlio^onum rigidum 
Aearplia;a artemiaia^filia 
Aoerace'e 
Acer macropbfllum 
Aceratea auric ul&Ca 
decumbena 
MiiJiHora 
Achilles Hiillefoliuni 



ONYMS ARI! 


PllINTSD IN ITALICS. 


3IU 




170 


Ic/iyranfto r^wiu 


rn 




i-(i 




17(1 


A( liieantbea anianph;lla 


rii 


Berlandien 


1 u 


craasifulia 


39 


louKifliiin 


31 


Actmella argent on 


11 


Bigelovii 


39 


ehrysanthemoides 


31 


odorata 


f3 


Imeanfolia 


62 


scapoaa 


fii 


AcUnolepis multieaulis 


62 


Actinomens longifolia 


ts 


pedunculoiu 


62 


Wnghtu 


C2 


AdeQopbflliim Wrigbtii 


Fl 


AdeDOBtoma faaciculata 


C3 


HparBifLlia 


bl 


Ad^m hgwlnaa 


61 


Adhatoda diileramnlha 


*a 


kaf,itIora 


CI 


Adiantum C apiUiia veneria 


62 


Chileiiae 


t2 


jAlowm 


bl 


Adolphia infeata 


63 


TflculuB CaUfuruiea 


iqi 




mt 


Agassizia suavia 


aou 


Agave Americana 


mn 


m"'" 


2(1(1 


gemini flora 


2(I(J 


Lethegmlla 


ni 


maLuIata 


i2^ 


piiTiflora 


171 


.1 hli 


1 7 


\iieinica 


9 


Aldamauni nalit 


47 


Algar bia lukia 


47 




10(1 


juhlhrd 


ion 


%ltiiiiaslrum 


100 


AliBntacece 


1U> 


Alhomao^iiio 



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Allioda iDcaniata 
Allium a. 



mutabilo 
reticulatiim 



AUoeonisondromelaloliui 



Ainus oblongifulius 

virldis 
Alojaia Booroil noides 
Altemantln ra Acb\ranthi 
liDuginusa 
suftiBticosa 
Amaraatact i 
Amaraatue Blitiim 
hibndua 



AinarjllidaeeEe 
Amhljgona pdvgonoidos 
Ai]ibI)olepiB seligera 
AinbJjopappua pu'illus 
AmbroBia cheiraathi folia 

pailostaLbya 
Amelsnchter Canadenaia 
Am man I a laCifnlia 

Wngbtii 
Amoreuxia Scheidiaaa 

WngbHi 
Amurpha O'hMmcx 

fiuticoBa 

1 Pvlgata 
Ampeloptia qumquefulia 
Amamckia intermedia 

lyoupsoidea 
AiusoQia anyualijoha 

lal'/dit 
lougiSora 

Tabeinrmontaua 

tomeatt. aa 
Auacardiacei3 
Anaiilhenx dectintbeaa 
Aadroaace occidental is 
Androatephiiim violaceum 



An,ho, 



1 lo/xila 



Anemia Mexipana 
Anemone Caroliniana 
Anemopaifl Cahfjmn,a 
Aooda hastata 

pentascliuta 



AaoJa Wii«litii 

in'planttu rotitjiis 
Anredera scandens 
Aatotlnaora dioica 
Aniherimm pornTidianam 
Anticlea Fremontii 

iaiil hyiam h U iftopuadea 
Aatirrhmao) Coalterianum 

Nattalbanum 
Apbaiiosteplina ramon simus 
Aphora bumilis 

tanceolaca 
merrunalina 
Dim .mm 

Aphjilion faaticulatum 

uniiloTum 
Apiaittum anguatiloltum 
ApljppappuB ciliatua 



spmuluBua 
ApueynapeT 
Apoeynum eannabmum 
Apodanthera undulata 
AiiiilBeia Canadenais 

lept tera 
Aiabid inacrocarpa 

paCula 
Arbulua Meozleaii 
VritLBtapbylos pohfulia 
[ iingena 



Arenaria Avtenaina 
BenChamii 
didusa 

t«nella 
UianJulM 
AigLiuonefititHiiBa 

Mexican a 
iryoth amua herf acm 
AnaColnchia bievipes 

Califami(.a 
longifljra 
WnjUa 
Aromu tcmiir ha 
Arniea diatuidi a 
VrtLmisia Calif jrnica 
Canadfnala 



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239 



ArtemiHiii dracunculnidcs 

leucopb} Hum 

luC«oalbuiu 

njicropbjtlum 
pa lust re 
Spieueelii 
Arthrocnemum fmlKosum 

macristHibjiii 
AeelepiaflaceT 
Aadepiaa a re nana 

brmhjBtpphatia 



mvolacrata 

LmdkeiTiKT! 

hnconi 

longicorpu 

JnmeaiL 

Liaana 



uiinimulana 
obtusi folia 
parviflora 
subulata 
tuberona 
I! idiHonia 

Aspicarpa by s^opifulja 
loDgipes 

Ajndium argMie 

mundam 

ptinahtm 
AspleDlam ebeDeum 

septenCriouale 
Tncbomanee 
Aeter aoguetui 

btepbaiipbyllus 

Cbileneis 

divarioatua 

loDAifuliua 

Dultillorus 

Novi belglL 

puuciflorue 

pniiiceus 

SoDOrte 

xpinoaua 

Wnghia 
Aatraftaltis Bigelovii 
Cubrensis 
crotalaiia. 



pus 



Afltragaliis ijbiipi 
didjm. 
Fendl. 
glaieo.us 
Hartwegi 

laucnpin 
Nuttallianus 

tephiodes 
Tbiiibeti 

4 Irngi/m CToUmotdes 
A atrophy Hum dumiisum 
Alrageae alpma 

OLhotenna 
At n pi ex argentea 
Audiberiia grandiflora 
piiljataohja 
Btacbjoides 
AFiiLiiiiia tomentoaa 
Avemn mmophjlla 

Azolla Caruliuiana 



bra''b>pb(|]a 
< < ruleecpua 



W riabtu 



tntida 
Birteja niukuariiBta 

pleauadiata 
Parbarea vulgaiis 
BardtiCtia scapnea 
fasellt imcana 
Haaellaeeie 
liilidEiP 
Bads Californioa 



BaLtdtiis bttJ rails 
I BelliBintegrifolia... 



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Bartend aeei. 
Berberu A.q»ifolLiii 



Boilandura Ijrata 

Berula anguscifnlm 

Ilessera 

Betuiace i> 

Bletia aph>)ln 

BideiiBBjgeltvu 
bipitmata 
cbr^eantbemoidefi 
ftPDiLuIaLei 
LetProphjUa 
ht.tofoepci'ma 

Bignoniaoed. 

Blitum bunuE Henncus 

BLphmeria pjlindrica 

Buorhaavia BuiBOpbjIla 



gibbosa 

Grixhaiia . 

leioeotena 

liQuarifuba 

pauiculata 

pnrpursBcent 



Bpicata 
tt ngbtiL 
Bugenbardtia cnspa 
BoragiQaceT 
BorcicbiiL fruteseeua 
Borga luiialniia 
Bouchea Ehreubergii 
liQifuIia 
spathiilata 
Vt nghdi 
Bcufhdiz tr«(a 
BouvardiB biitella 
BowlesiBi lubata 
Brndbuciai hirtella 
Brasoria truDcata 
BriLbellia bacihandea 
betoniLTfulia 
cjlinJracea 
flartbunda 
grandiflura 
lacimata 
oligantbee 
remformia 
liiddellu 

'Wigtizem 
Wrigbtii 



Prodi I a einy 'in 

grHndifl"ra 
Bromeliact c 
Browallia lexana 
Bur-bnera eloncata 
BuddkmHumbolltiana 
marrubufiilia 

scordioidi a 
Bumelia recliuata 
Burrieha aatbemoideR 



lanoaa 
placjtaipba 
BjttneriaceB 

Caialia deiompuiita 
Cacuceie 

Ceeaalpioa putcbernma 
Cii}iput Tree 
Cuhfurma Ohiie 
Calais Doiig!a8ii 



liL< 



.iirdii 



Calais platyoarpba 
Cnloiumtba glabella 
C a! and Lima niaritima 
Meiiziesi[ 

Ch-tJiijris FTemonht 
Call mad ra ChHinii drye 

hetbacea 

bumibd 

FurtonceQsie 
Calliobrua plaijgluesa 
Calliproa luMa 
Cnllirhoe involuTats 
Calocbiiniia luteuB 

BpleudeiiB 
uaifbrna 

Cnlu^baaee loitant 

obi ODgl fill lus 

CaljcadfiniaFremonui 
pauoiflora 
tenella 
Ca]> cogens Parryi 

■\\LLghtii 

Cubpnema anjiiilijoltii 

a/hda 

decumf'ens 

Hunbundaa 

faljsteya VaamxliURa 
sop I urn 



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CalTsteg a 8 Idaaell 

CamasBaPraaer 
Campanulaoeie 
Campaauk rotu d fol 

perfd t 
Campylocera leptoca [ a 
Ca/ialiUa 
Cappandace's 
Cap ana mul Jt la 
Capnfol ace^ 
Capsella Bursa pastons 
Cape eumm cropiyll m 
Carl) Ileja ems 1 f U 
tomen osa 
Cardam ne angulaCa 
Cad BpermumHiil oaaabum 
(.ares Ba la -b 

cepbalopLora 

dec dua 

Emorji 

Hooker ana 
hyet c na 
lau gmoea 
L ddon 
marc da 
mnnt ola 



Dtegra 
lanata 



xijrjla 
M sail} J WIS 
occ dsDUl 3 
orJoc 7 



Thurbe 

umbel] ata 

Wight 
Canmnat a teou flu a 
Carphepliorae junceua 
Carphoeh-ete BIg«lo 
Carjaol ■eform 
Ca yopbjllacefe 

Caea a banh mn des 
CbauixD sCa 
el aiB ecr eto d e 

L Ddhf* me ana 

obtua fol a 



Caotau ea Amer cana 
Cei tourwfe u Dm nm d 
Cent osteg a Tiv rl o 
Centroa^ma Y Rmiana 
CephalanUius occ denCaUs 

CeratophjUa e^ 
Ceratf pijUum cleme at m 
occ teatal s 
c d um fl dum 
reianmi 
Ce cocarpus Ci Ij I u 

pa V fol us 
Cevalba a ata 
Cbceto aljiS hot u 
^ bzen 
Cka n 

Cbeilautbes Alabamen b 
aepe a 
Fondlo 



lanoaa 
tomentoaa 



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CheiraQthus ra/i(a'us 
Chenao la oaiphiiLlmm 
Btevioides 
tenuifoha 
Chenopodiai.e'e 
CheuopoiliuDi album 

aQthelmiatictim 
CbilopBiB ilvtmu a 
liiieana 
Chipatane 

Chlorugalum pomendianum 
Choiizanthe angustifolia 
brevioornu 
dittusa 
iimbriata 
pruBiimbens 
a Mexicans 



ChrjsaetiEi 
Chrjsopei 



foliuHa 
Lispida 
pilosa 

ChrjooBCordium 
Chth intaho biflura 

Cituta maculata 

Cirsuim Cuulteii 
Graliami 
Neumexifanum 
hrvcentnim 
Qudulatum 
Virgmicaiu 
Wnghtu 

Ciataeee 

Clad mm efiuaum 

Clappia au'LiIiefolia 

Clajtoaia perfohnta 
\ irgimca 

ClemaUs Drummnndil 
lasionUia 
ligueticasfolia 



Pitchen 

reticulata 

Cleomella aagustifijlia 

lungipea 

Sunora' 

Cut cuius Cacolmus 

Cuinogjne camosa 

ajfoiiflcaneacens 

CuJlumia gratilia 

gracdiflora 
Cdoaadiaj dhd: 

unbellata 
Commeljuace* 
Commelyna aw/« l/clii 
imoaria 
^ ligmi'^K 



Cotiobea mtermedia 

multilida 
Cinoclimum betonicum 

disaecttim 

I ordjlanthus hlifolius 

la\ifl)ruB 

■Wnghtu 

CoicopBia calliopaidca 

cardamiuefolia 
Drummoiidil 
Corethmgyae filaoinifolia 



Coruua Nuttaliii Aadul 

pubescens 
CiKaniaericiPfolia 
Meiiicatia 
^tansburyana 
Ciuduaiolus anguBtidcus 

etimulosus 
Coehloeperme'e 
ClIIidbiei bicolar 
CilpganmUngifolia 
pukl^ella 
Colubrinia Tatenaia 
Compoait Q 
I Condalla ubnvata 

spathulata 
CijmolTQlaee'B 
Convolvulus CaliGirnnu" 



Hermanni t 
lobatus 
NattaUu 
obliisifdiw 
a Drummundii 
peduQOulata 
t,orUiirus pilulubus 
Ciirdia Boss ion 
Greggi 
podopophala 
Coiiflpermum by'snpifulmci 
CorydaJis aurea 
Co manthus i isadus 
Cosmua bLpmnatus 
(MUjh leood 
Crassulaeej- 
Crepia ambigua 
Cresea < retica 

TruaU n!i! 
Cristatolla Jameait 
Cr()cidum multleaule 
Crotalana lupulma 
s igittaliB 
Crttin irgnanthPiQiiiii 






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C oton Berland e 
cap tatum 
eUp c 71 
fraticuloaum 
glnndnloeu 

Lindbe mer an 



Buaveolena 
ayr ng-Ef 1 um 
tr chocarpum 
Cruc fer 

Crj-pheanth s Barbadens s 
Crvploplei a C Ujirn ca 

Cue rbitacee 
OticurbiU digitata 
perenn s 
CunSa glal Mi 
Cnphea Wc ght 
Capressuadsf Ja 

J^a nab a n 
naavca p 
Capnl fer'p 

Cycl loth a ilba 
C}Uanthera d ase ta 
Cjmopterus Fend or 

Cynanclinm aug at fol am 
CjnogloBaun g im^e 
p osum 
CjperaoetE 
Cjperns ar atat s 



d sa tlorus 
Drunjiaoiid 
mi ulmua 



^ ' Dauc p 
De]pb ni 



laterlflu u 



1 tescens 
MIchaux am 
m crodont a 
ovalar a 
ph maoJ 
repena 
Schwem z 



3 7 ' Deam d i 



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pameiilatiiii 
Wughtu 



Dn 



P3 a argut. 



DianCliera Americana 
Diaperia prolifertt 
Dicentra chrf sactlia 
Dmhelasfeiania tongeslum 
Dichondra argentea 

Carohnmm 

repeQa 
Dicbromena ieuFOcephala 
Dirliptem reeupmata 

tlda poi ies 
DiGona cane'jGene 
DicranoLarpus paivifloru' 
DiMlia teres 
DioapyrtiB Tesina 
Diphims gbittnosua 
Diptopatpna eriooides 
modeeta 
DipteraoantLua nudjforas 

snffiudicoBus 
Ditbyrpa Cahfornn^a 

■Wislizeni 
Di deeatheon/nijfduni 

iiiteiirifoliii'ii 
Meadii 
DudoQ L ScheidiaDi 
Draba miorantba 
Draiocsphalumparviflorum 

DrcjiiaCieegii 

jancea 

puborula 

Ihurben 

Dijmaria djifusa 

frantemiides 
alaniulosa 
Bperi:,ulaitri>idea 

DjsmicodoQ oiatum 

perfohatum 
DjBodia chiysanthemoidta 
poropbjlloides 

Lbenace) 

Loheandia tecmflora 
Ectioreria lanoeulata 

pulvei uienta 

stnttiflLri 
Li hmoRpLimuic dtHetum 



,a briclijBipbju 
lypjleu II 
mauuailboB 



Eclipta erecta 
Fcidyabiapidishimi 
Ebretia elliptica 
Elaterium Coultmi 

"^^ riglitii 
Elatinaoe'e 
Elaune Amencaaa 
Eleochana acicalaris 

arentcola 



EUMn 
eqmaetoides 
obtuaa 
paluEti 18 
roBteJlata 

Elliaia thryainthemifoha 



Elf traria tiidentata 
MyfTO'^enimm Oibfoniicm 
Emmenanthe penduhflir 
fmoiva iauvLoleaa 
EDuiwCahfLrmLi 



EnMiem 

EDgelmanma pmnatitila 
Engdmmaita ^ulUilhana 
Epbedra antiaipbilitica 
Epilobmm. eoloiatum 
Epipactia gigantea 
ij iiiphtiim mmiTOtidtotde^ 

Equtsetace^ 

Lqoisetum arveoao 

1i Tigatuu 
rtibuatiim 

Eremoiafpua aetigerua 

Eiicaoea? 

Enciimt.'ia tricmdes 

Ecigtron Bellidiaatrnm 
rigebvu 
Canadease 
dplphmifolmm 
divelgcna 

encoiJea 
enoph(l!ura 
gKucum 
maoiimtbum 
modest I im 
subdeearl ens 
tnodjctmn Cabfoimcuui 
CTianfolatia 



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Eupatu umP rrj 




ciliatum 15- 


Q ra 






epmacoEcfol um 
Wrght 
EuphorL a acu a 

alb mar„ nata 

BQg St a 

au pMtcn 










graeile 

Mmnlhifmm 


176 

ITS 








17" 




176 


pharnaceoides 


177 


Ar zon ca 






















17f 


brachycera 










Tirgatum 

Wiightii 


176 


cap tellata 






coiorata 




crenulata 






.^atl^l.a 






filomeratum 

heiiotropioides 


J40 

140 


d ptjoHperma 




141 




peotocaryum 


14a 


eaul*f rm 9 






esstipuldta 












70 


glyptoaperroa 

heterantha 
bcteropljlla 

bype oMa 


Leavenworth ii 

Wrightil 


70 

70 




' 














Latbjr a 
m oti lU 

peel onlifora 
Pepl d on 
Pepio des 

petalo dea 
p lul fera 
polyearpa 
vol qonl la 






Jhnb«nda 

Texensis 

tricaetha 


157 

157 

157 

157 




31 


Eucbroma purpurea 

Eucnide baitotiioides 

Eiinanus FremoDti 


118 

G7 

116 


ISerlandieii 


7G 


coiivzoidea 


76 1 



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Euplinrbia proRtrata 



pj, 

revoluca 

Berpens 

beiTula 

etictoeperm: 

Unella 

tetrapora 



TiUifera 

Wright 11 
Euphrosjne ainbiosi'efolia 
Eupliica cinvolvulacea 
]<]urotis, lanata 
Euryptera luLidn 
EasMma eroltalvm 

Eaiselmnum 

EutQCa, Douglam 
ioa'jrf'lia 

Evas canleecens 
Evolvulue alsiQoidee 

argenteus 

di t-olor 

ovaljfollus 

P.11.R.. 

Ejeeohardtia amoiphoidis 
FsgoQia CabfomiLa 
Falluaia paradoxa 
Fendlera rupicola 
FilagiEOpsis Druniondn 
muUicaulia 
FilKgo Callfornica 
Filicea 
rimbiietjliB captUant 

spadicea 
Flaveria cliloi'J'hlia 

C'lntra^Biba 
Floreatioa tripleris 
Floucenaia eernaa 
Foreetinra angu tifolia 
liguetnna 
pli^lUreoidea 

,,t ,„ 

1 eCicalata 
aphBTOcftrpa 
Fouqaeriatere 
Fouquena eplendens 
Fragam Chilpnais 

Frangula Califormci 

L irrliniana 

l^'raukenia ^randif dia 



Frankeniaceie 
Franseria aSiKcaihs 

elimopodifolia 

conferUfoha 

deltoidea 

duiDOsa 

Hookenana 

teDutfolia 
Frasera Parrji 

epeciosa 
t raxmua Birlan itrian i 

cuepidata 
diputala 
piataci^folia 
Scheidiana 
I daitn/t 

Fntillarla Kamtathatcensis 
lanieolata 
mtdica 

Frcel!oh;a Dcucimonda 
Florid an a 

Fuirena e^uarroaa 



GaiUardia JalKOolata 
pukhtlla 
Galaetia canLaoens 
marfeinalis 

■ttnglitii 
Galineoga parciSura 
Galium Apaime 

Califorcicum 

miiropliylliliti 

proliferum 

sufFcuticoBum 

Wiightii 

Galphiima Imilulia 

Gairyace'e 

Garrja elliptic a 

Liadheimeri 
WrighlLi 

Oaultliena Bballim 

Drummondii 

parv [flora 

Buflulta 

vilJnsa 
Steuonphon virgatus 
Eulrbus CahtoiDicus 
Jussi'ea repent 
( eistUrM glandule n 
GentianacecD 
G<.iitiaDa aflims 
IctoDsa 



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Gentitina quimuLflota 
Ciraa cuness ni 
GeraniaeeEB 
Ceramum caspitoBum 

C arolimanutn 
Qeraidio hererophjlla 
pocpnrea 
Wnghdi 
Gilia achilleiFtalia 
aggregata 
androeaoei 

Califormca 
(.gpitata 



lacoJispicua 
luagi flora 

molCiHura 
multicaulis 
pharnaceoiJes 
pjljcladon 
rigid 111 a 

virgata 
Olandtdarui hinnnalijidti 
Glottiditim Flondatium 
Glyoycrhiza gluttneaa 
lepidfita 
Goruphrena cT-spitosa 
decumbena 
gliibusa 
Sonorie 
lionolobue tifloraa 

n nanchoides 
gramilatus 
parvifoliua 
pro due Cue 
jiroslralus 

C raljola puailla 
Goaaypiaothus ngidiflorus 

Qreggia camparum 

Gnudeha arguta 
muloides 
Inni I. jiata 



Gross ul ace i, 
Guardiola platyph} 11a 
Guiacum Coulteri 
GQilleminea dmisa 



Gjmnog 



GmicrreziagvuiQoapermLi] 
miciicephula 
ipfaarocephala 
Texana 
V, nghtii 
mme tnangulang 
Ojmnosperma corjTuboaum 
GyoaraMoBismonanthigjna 
( yrandra chironuitdea 
Habraulhua Andereoni 
Halea Toxana 
HaploeatLsB Greggu 
HaplophjtJB cimicidum 
IlarpB'carpaa eiiguaa 
Hedeoina deutata 

Drummondi 
iaeana 

plicata 



Helenium 

microtephalum 

fubcriiliim 

teQuirulium 

Heliintbeinum Can. Ilmanum 

Hell in thus angQatifolma 
argLpbj-Uus 
euouinenlulma 

gniaae aerratus 

lenticolariB 

maiitniliaiii 

liTocoj: 

Cnphrodes 
Heliomena multiflona 
tentiifolia 
Heliopbytum glabriuaculam 

parviflorum 
Holir psii buphthalmoidee 

panitoJia 

Ileteroapermum tBgetiauia 

Heliotropmm angustifoliiim 
CuraBHavicum 
C reggii 
muQdatum 
bmbatum 
pantjlorum 
phj'llostachyum 
tenellum 

Heimcarpha aubsijuarroaa 

Hemiptilium Sebotlii 
Bi^eloMl 



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Hemizonia atigusiifoti t 
dfcumbem 
faeciculata 



I/eii Itcandia ■amllifioTa 

proaanbsM 
Texeasii 
Heracleum laoatum 
Herman ma Tesana 
Herpestis chara edruidea 



mgrcKms 
Totuadiiblia 
Ileterantteia qrammea 

IimoBa 
Heteroapeimum dioranooarpum 
lleterotheca floubunda 

Bcabra 
Heucbura murantha 
parvifolia 
rubcaeeas 
Hibiacua oardiophjllua 
Ooulten 
denndatus 
nieracmra longipilum 
Hii'^a aeptentnonalij 
HulTmaQgeggia caudata 

melanofiticta 
la^crophflla 
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HohcKiltlirt LuKrji 
Hookelia paiad \a 
Hiaatkia aigophjlla 

bjathjcarpa 

cj tjBOidea 

jnncea 



obloDgifoha 

puberula 

Furshiima 

lubella 

scopana 

Btngoaa 

eubpianata 

toraentoha 

HingM,i 
Wrangehona 
Hulaeaf ahfornita 



HuinaliiH Lupului 
HydrocharidacetP 

lljdrixhan' fongiisa 

Hvdrocotyle Qacaiis 

rannnculoideB 
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Hydrophjllacee 

Hjdrupferidea 

HynienatiieTuiQ aci roaum 

( ua[haliapai! 

polydi Ptum 
tr iiuif ilium 
Wnghtu 
IlymeDOLlfli luonogyra 
IInnpQolobu^ diyaricatus 

pubona 
HymeDOpappus purymboaiis 
flaveacene 
luteus 
Hjmenothrix Wizliiem 
Wrightii 
Hynmiojys tah i 

HjpericumfrrmoBum 

Scoulen 
HypolepiB Cplifnrmca 
nyptis lanata 
apicata 
Jscqu nia pungena 

macro/xirpa 
JaniphaLriain^ii 
manihot 

Janasia graedis 
Jasmioace^ 
Tatcopba Berlandien 

maerorhua 

JimipJia 

muttiGda 
Illecehrum cdosoidea 

temtKuloiiait 
Indigofeca leptosepala 

LindbeimeriaQa 
Iiifantea Clateam 
lunidium lineare 
Ijiomtea commutata 

di eilii 
fastioiata 



[ rfnculans 
[anduiatii 



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tenailoba 

Ireeine ^Ifuaa 

vermioulaiiH 

iHolepia oapillans 

Isomens atborea 
Juglaadacea: 
Juglans data formic 

tupeBtria 
JuuaceiG 
Jimcuii articuhtus 

Balticus 

bufonms 

debiliB 

loagiHtjlis 

lamprocarpuB 

msrgiaatua 

COdOSQB 

pclyc^kalus 

xipiiioides 

Juuiperus Indioa 

uiudea talis 
pacliyplil La 
tctragona 
Virsimaad 

Juilmrt peduncultisa 

Iva dcalbata 

KalUtrtemia graudiflurK 

Kirwmskia Humboldtiaoa 
keerlia belhdifuba 
XipberliDia spinoea 
KoHteletzkia pimculata 
Kiamena caneeceii? 
lancoolata 
pHTTifoha 
IvramoiiaceiS 
KriniCzkia leiooarpa 
kuhnia eiipatonoidee 
Labrntc 

Lacbnoatoma parviflun 
Lagophylla diobotonia 

liiipea 
Lantana cineeceiis 
horrida 
macropoda 
odoratn 

32 k 



Larrea Mexicana 
LaHtbenia al«brata 
Labtrci arouta 



Lauraop i 



P'l)"uhiza 

til ul a 
LentihulacL i 
Lepachja cdummus 
Tagetes 

LppicJflothua phyllauthoides 

Lepidmm alyaaoidefl 

Califurmcum 
intermedium 

nitidnin 

V, ngbtii 
LepCooauhs echmatua 
i^j%Jojai3 iclmmiioides 
Leptosjoe Doilglaaii 
StiUmanm 
Lepuropetaloo apatiiiilatiim 
LenaDuCauB 
Lespedeza ti hoea 
Leacanilim Fa-mtnan i 
I cucophyllum am! /jvum 

To\anum 
Liatiis punctata 
Liboeedruadecuriens 
Llleacex 
LiuiDaDthactx 
LimDantbea Douglaaii 
Limnobmtii ep ngia 



Linum BeiLandicu 



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Lintim mulliLiule 



rupeatre 
Lin ana CanadeneiB 
LinoByna arboresoens 

COTOUOpifchSi 

Di ummondii 

graveolona 
MeDziesii 
Mexicans 
pulcbella 
Tamalosa 
TiGcidiflora 
Win,htii 
Lippift Borlanoien 
gemiDsta 

DOJi flora 
Lithophra^ma Cymbal iriae 
heterophvlla 
LUhophram la fro iT ti 
Lithoepetmum bioviflorum 



MetamoreaBe 
Lithrar-iaurinii 
Loaea<.ea. 
(Lobelia) fysa 

1 ail flora 

peclinata 

pubeiula 

LobBhucei. 
Lobeh* ami! lift 

Berlandieii 

c aid mails 

Chftirtiana 

teaeet rails 
Lfeeelia glanduloea 
Logaaiacea- 
lioai(?era dumosa 

Bubtpicata 
Lowellia aurea 
Luea.aa retuoa 
Ludwigia aatauB 
LiipinuH allinis 

albifions 

arboreus 

bicolor 

oytiaoidea 

deoaiflorua 

DongUsii 

birsutiseimug 

llttL Talis 



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miirantLus 

riTularia 

spiTsiflarua 

subcarQLSUs 



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Lycopodium lej. idi^ hyl'um 

Btrutheok ides 
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Lygodesroia aphjlla 

Lvthracet 

L} thrum alatiim 

Macb ^ranthera 

parvlflora 
taodcctifulia 

MiiriimPiia cindiflora 

MainrbjnchuB Cilf rmevs 
Ofilensia 
he tero phallus 



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Malacothni Call form ca 
Coulteri 
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rbtiiia 
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jMalpjgia glabra 

Ualpigiace^ 

Malva Aiiunean t 
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leptopbylluc 
MfinroHiiuin 



ppditilidum 
Thurbou 

MalvaTisoufc Drummondii 

Maneiuita 

Margarauthus solanaceiie 

Marrubmm vul^are 

MarBitea niaciopcda 



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Marsilea lestita 

Tiolacea 
Matntaria discoidea 
Maacaudia aQtirrhuuflora 

Wislizeni 
Majcenus pli^llantboidea 
Meconella Califaraica 
Meoonopeis heterophytla 
RIedieago dentuulata 



Melampoftiui 

hiepidum 

Mclanthaoeie 
Melilotue myilentalts 

Melochia pytamiiata 

toinentoei 
BtenLspermacet- 
Menodora heterophjlla 

stabra 
Mentha lauad iQeia 
Mectzehi albaaulie 
muitiflura 
oil oeperma 
V/nMn 
MetaeCelnia aDguRtifolia 
barbi^erum 
k hlechtendalii 
Mieromena Douglaeii 
Xalspenfixs 
Mekaiua sc and ens 
Mil la biflora 

Mimoaa Berlandien 

biunoifera 

bnrealis 

djaocarpa 

tlexuosa 

fragrana 

Lmdheimeri 

malai. phjUa 

.tnuU m 

Mimulus brevipes 

Cdrdmalia 



glabrai 





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Mil ibili 


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Calitjrui^a 




loHgillura 




inulliaiira 




oijbaphoid 


MUr^jI 


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Monard 


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hetul sa 



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punctata 
Uonaidella candicans 

odoratiaeima 
uiidulata 
villooa 
Honeebma Pilooella 
Monmtra eu«e,falm 
Monnina Wnglitn 
Munolopia major 
Montelia tamanecina 
M quinia hjpoleuca 
M rtoasa Greggii 
etabrella 
eamporpireae 
Mjrus rubra 
Mozzina canesoens 

cardiophilli 
spatbulata 
Mncronea Califurnica 
Mulgedmm pulobellum 
Myosotes suffratioosa 
Myosurus minimus 
Mriiop^Uum heterophjllu 

Naiadaotx 
Naias tanadcn is 

Nama duhutuma 

lamalcensis 
Nasturtium curvisiliyua 
ubtusiim 

eesadiHorum 
Navarretift atractjloidea 

Sobottu 
Negucdo aoeroidee 

UdiJ rmcum 
Nemacladus ramr sis'imus 
Nemast^hs acuta 

gemmijlora 
^emopbila aunta 

luiiflora 

pediineulata 

Neptunea lute a 
Neaiea lougipea 
saiitifiilia 
Neurngramme pedata 
Niculietia Edwirdsu 
Nicotian a p and u rati 

^lerembeigia vm be 



Nuttalia cerasiformie 
^yotaglnlice e 
Vyottgioia capitota 



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Nj'ctBgiuia ohtitvi 

Tbrreyann 

A'gcteniini lobatuin 
taieu/it 

Nymph tea advena 
Obion e aryentea 

acanthocaipa 
Harclagaiii 



confertiHora 

elegana 

haifolia 

occideutal^s 

radiata 
Ocotillo 
(En others ilhicaulu 

brachjLacpa 
caidiophjlla 
chamiPnenoideB 
(laveformia 



gauTi flora 

Haclnegi 

Jamesii 

lavendulifjlia 

margmata 



pricttiveria 
aermlata 



Wrightii 
Oldenlandm aceroaa 
anguBtifrli 
liumifiis I 



OleELP L 

Oligogjnelampii 
Oligomeris gh 
Oliieya Tesota 



Ouosmodinm Carolinianuin 
Oplotkeea Floridana 

Orehidaceie 

Oreodapbne Californica 
Ornilhogabim Mirkaaat 
TiiJirium 
Orobanchseei, 

Orobaiidie ciMiosa 

fi<ciculata 
Ludoucian i 



lai'ems 
purpurascene 
Os' ludeii' I tenfl!/ 
Osmofrhiza brichypuda 
oGci leutahs 
Ojtahdaeeii 
f> talis BerlandLPii 
decaphjUa 
diiliondr Lfolin 
Drummondii 
stricta 

M rightii 
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anguatiiulius 
t'nunfcsii 



ghbnfrihns 
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Iiireutus 

miillilknii 
□yctagineus 

oxjLaphoidos 
Oxyuca chr} eauthenioides 
PaehjBdma myrnnites 
PiPoma Bcoivnti 
Falafoxia calloaa 

IluukLnana 
linearis 
Teiana 
Papa7Brace% 
Parwtaiia debili3 

Flondaiin 
F ™.,I,.mm 
PackmBOnia acnleata 

miciophylla 
Pironjchia Jihipbu 

LindLeimeii 

Partheniee mollis 
I'attlioiiiuni argentatum 

Hjati-rophurus 



Paesifloraoe 
Passillfira affima 
faida 
Mexioana 
tenmloba 
Pavonia Wnghtii 
Pectia anguBliloli i. 
BerlaDiJ(<>ii 
liiipes 
imbeibia 



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PecUspiostiita 

toaella 
PectoparjaChilenma 
PeJiculaus centrantheri 
cletiaifiori 
grajtJ'jhirii 
Peganum Mejrieanum 
Pell La amlmmedi-folia 

atroparpurca 

flexuoBa 

longmtaa-onati 



BTralhy/ui, 
puleliella 
WngJUpm i 
Fentacli%Ca aurea 
Pentiioropl]3s W nghtii 
Pentalophus longiflorus 
Peutstemon ambignus 

auCiri binoides 

haeharifoliua 

baibaCuB 

brevifloiuB 

centranChifohuB 

cordifolius 

cyananihus 

dasfphjllus 

digitalis 

Fendleri 

heterophjlliia 

ijiiberffia 

Jamesii 

bnanoidea 

pimiceuH 

epectabilis 

eCenDphfllus 

ternaCus 

Mrgatus 
Wngbtii 
(Perezifl) Thurben 
thyrsuidea 
Wrightii 
Peiezia nana 



Pencome caudati 
fcriloma 
Pentyle aglosaa 

wronupihlia 

tmoryi 

Petalonyi 

Fetal ostemon candidum 

(maigmatuni 

Peteria scopaiia 
Petunia paivifloia 
Peucedattiim daejcarpum 
fieniculacpum 



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Neomes cana 

tauacel f 1 a 

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Piel p ea como a 
PhiladUpb sseriyllfolua 
Pliloi Dr mmond 

tnuT lata 
Pbotaaah fol a 
Pbjllanth a Carol n m s 

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Phjsal Altel enj. 



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Pbjtolaccaceie 


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Phytolacca deoanlra 


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Pickenag a moneana 


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Pitostjiea Thurber 


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Pinaropapp 9 Wiigi 


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eduha 
Iremonhoiia 



SitbiDmna 
Torreyana 

iabercalata 

Pistaeia Me\icana 

Pitavia dumoea 

Fitheeolobmm brevifohura 

PIsntagiDact'e 

Flantago ^purpltal ides 
inijor 
Patagonica 
Virginica 

Platanthera dilatata 

lencoBtaclij's 

Platanus Gjl}fvmica 

occidentAlie 



Plat^oma atropurpurea 
Platyetemon Califotnicum 
Phtystigma Iineare 
Plectntia congasta 
Pluehea camphorate 

fietiJa 
Plumbagmacoip 
Pogogyne Douglaeii 
Pdaniaia aniglaadalosa 
PdemomaceiB 
Polemiinmm cseruleum 
Pdyanthes Jfen unn 
Poljgala hamiptoearpa 

macradetiia 

mitkaDa 

W rightii 

Oa!iform<.a 
Polygalaceie 
Pol jgala alba 

Cah/ortimi 

eucuUda 

liemipterocarpa 

LindbeiB»en 

maoradema 

Nntkana 

OTatifblift 

pnberula 

ecopana 
Poljgonacee 
Pi Ijgomtam biflomm 
Pilv^nnam aere 

ampliibiuiii 



u i aiupoium 
lijdiopiperLidei 



Pdvpodium iDctuiain 
Pol\prfiiiium procumbens 
Pftijilicbomiii 
pgntederiatL i 



Pi imlm HI 



itif lia 



balaaiHifura 
nionilitDi t 
tremuloiJes 
tri(.hacarpa 
Porlieri angastifoLa 
Porophjllum Gre^gii 

inaeiocephalun 
ecoparium 
P'lrtulacacw 
Portulnta lanceolata 

piloaa 
Pntamogeton hjhriilus 
lueens 

pauuibiriiB 
ptamatu-* 
Pntentilla ADseriiia 

glaudul sa 

paradota 

Tbuiberi 
Preaanthes exigua 
Primulaoe'c 
Proaerpmaca paluatna 
Pmnus Capollm 

eul)L jrdata 

Vir^iniaaa 

Fsathj rotes ana la 

Bcaposa 
Peatliyrotea incisa 
Feilacbs asteroid ea 
Peilocaiphua tenellus 
P oralea esoulenta 
{lonbunda 
DiaLrostaclija 
orbieulariB 
psyoudea 
Ptelea aLguah folia 

tnfuliati 
Ptens aqiuhna 

ail If urpurea 

Itiniigino'' t 

femijvlia 

PtProstegia dr} matioides 

PlilooaljuGreggu 



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Ptlm 



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Py opappas Ca n 
Qirnnoc dmvu fin 
Quamoc t co iitea 

oLiys ep 



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Sal X 2a nJ 
oD^if a 

W igii 



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SambuouB Mexnaoa 
SamoluB ebrscteatus 
Jltri/iindoi 

Valerandi 
Swjii, lie Drogo 
Saoicula arctopoiiies 

bipmnatifida 

Menziesii 

nudicaulia 
SantiilaoeiB 
8iinvitalia Aberti 

trsgiii-folia 

Sapm^ua mar|,}natus 
bapium' annuum 

salicirohum 

Sarcoatonima bilobum 
dattsum 
eyiunukoides 



peterophjlluc 

Sarratia Berlandieri 
Sartwellia Fiaveiia' 
Sfosafroa Laiinl 
Saururaoe b 
Saxifia^aceT. 
SiMfiaaaParrji 

rir„inien-.is 
Stlii.ffemcuneif>Jia 
&(.haiieria linearifolia 

parvifolia 



Schmi 






Sdn^aphragfia puiiUa 
Sobkuhna Hopkirkia 

Wngbtii 
Bcbtenocaulon Drumraondii 

Si-licenolirion ellnim 

Micbauxu 
S *<rnm iffusus 
SeboUera grmuni folia 
Sclitaaliu UDcinRta 
holla eaadenla 

SciLpua acJitus 



tacustna 



Olaeji 
puDgena 

roildlahis 

subsquarrosiis 

mlidia 

Sckrocar^s txigvm 

Sderopia 

Screw bean 



Seropbnlanace i 
Sriopbulani pi 
Scutellaria Drummmdu 

tuberosa 
becluni odule 

apathul fuhuiu 
Wiigbtu 
&elag[neUa lepidopbylla 

mpeaWia 
SobDocaipns anguatifolius 

cheoopucliuitiBB 
dilTusus 
8Hlinucarpua ditlueuEi 



lilif ms 

loDgilobus 
multilubatus 

EiaSellii 

SL^uoia sempervircns 

Serjania lucisa 

SeT(^hytam Dmrnmandi 
Ittme^um 
pilosiKtmum 



be;ueria bipmnatisecta 

spibra 
Sida ElUuttii 
filicftulia 
lilipeB 

lepidota 
loiigipeE 
malvEeflora 
phyaoi,aljs 
SidalLea humilis 

nialvelloLa 
Si lasiapaiad xi 
Silene Auturhiiia 
Gteggu 
pulcbra 
qamquuvulnera 
Silpbiutn soaberrimum 
Siinanibaoefo 
Simmondaia CabfoitiKa 
Simsia calva 



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SiphonoglonRB PtloReUa 

dilTusum 
Sisj niicliium UerinudLsna 

bmilacetc 
fimilax B<ma nox 

BeyTKhtt 

katlaia 

Jiederi^olia 

pandarala 



atellulH 
Solanaocffi 
Snianura Bf}ariems 



citru]hrulium 
erenato dentaliaH 

elteagoifolinm 
Fendleri 

ffmistmda 

hderandrara 

heterudoium 

Hiiidsianiim 

JamesiL 

Lmdhamerian u m 

Ivlafiomm 

Bodiflorum 
BtemenaDUDi 



Texeme 
tnflorum 

Solanum C&ronqptu 
tnquii)TUm 
nmbellirerum 
Terbaseifolmm 

Solidago anguata 

Caiifornica 

Caaadunsia 

elongata 

uemoralis 

ocLLJeDtalia 

petiularis 

Badula 

Sonclius aaper 

oleracens 

cpeiioea 
tumeQtona 

Spergulatm rubra 
Sphacele cal^ciua 
Spb"eriileea aaguatifolia 
Feadlen 
lias tat ula 

33 k 



IphTrakiaineana 
sltUila 
Spilanthoa \uttallii 
hpiriea arufolia 

caispitota 

Gil'tfmm 

liumaea 
Spraguna umbellMta 
'itachji agrana 
enp penes 

Statua Liincniuni 
Stegnoiarpus caacei.eDa 
Stellaria media 

m ncltosflts 

Steaandrium barbatuiii 
Stepbaaomeria mioor 

Thurben 
SteYia Beriandieri 

caneaceae 

macella 

mioraiitha 

lalici folia 
tlilitnffia yhnlici 

Stipboniaiiitpgiiftiia 

fetreptanthua arcuatua 
carina! ua 
tlandulosus 
Jmeartrohus 
Inngifolius 
petiolana 
platycarpua 



Strombocarpa 

Stjkclina mitrupoidea 

StjracPfe 

Styra\ Calilurnicuni 

8u<pda fmCiLoaa 



&jmphornarpus mollia 

rftandlfubus 
Sjnthlipaifl Bsrlandien 
Gregtu 

Tagpter murantha 
Talinopaia fruteaieoa 
Taliaum aurantiaeum 

parTifulium 

ceflexiim 
Taxadium diatiehum 

Teciima stans 
Tdanl/iera piAiigonouL s 
Teb'ti'ipurniita 
TephroBia leaeaniha 

LmdhBimeK 



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TephroRm ten ell a 
7\pqpote 

Teasai]& boiaalis 
Jdradynaa ramosi iana 
Tetramerjum laspidum 



Teutn 



plaC) b tedium 

p l,>l.c!mm 

Cubense 

lacimaium 
ThsJictrumFendlBii 
Tbamngama montanum 
Tetaaum 
Thaapiuia montaama 
Tbolesperma iilitoliuDi 

Bimplicir liiiin 
TheljpodmLQ W Uf^htLi 
Theophrastnci* 
Thermopsis fabaci a 

Tblaspi Pendleii 

Tbuja gigBDtea 

TburbeiiatheapesioideB 

TbjBanoearpus (renatue 
elegana 
laiiLiatue 

Tiliacp !■ 

Tillandsia reourvata 
usneoid^B 

Tinantta g^soiliiloides 

Tiqailia brevifiilia 
dlcboComa 

Tithoma tubiefonnis 

ToamtfoHia 

Towns endia stn^osa 
Wrighfii 

T adeicanua an milu 

m^ractba 
rbodautha 

Virginiia 
Tragift angustiMia 
hctovecufoliii 

myneB'fi. Us 

Bcutellanipf lia 

Tnasthema monogyna 
IneboeoroniB 
Tncboptilium incieum 
Tncboatema diobomum 

lanatum 
Tndat bicokr 

Trifjlium dhnj-urpareaia 



Tnfulium JSpjariPrl'ie 
tucatum 
Unibnatum 
heterodnn 
luviilucratum 

phyaopclalum 

tilde ntatum 

Trifureia eie ulea 
Trixis angastijolta 
fiutescene 
Trompillo 
Tui-kertaania 

furntia tiiacrpcar^t 
jalula 

lyphaced. 
Typha latifjlia 
Ivna inyiic tfiilia 
Ultuus alata 



crassitjba 

opaca 
Umbellifera" 
Uneuadia specio'ja 

Uilica graciha 

purpura scen-j 

Urvi Ipa Mexioana 
Utnculana gibba 
Vaecmium uvatum 
\ acbelba Lindbeimeii 
Valeriana edulia 

Valenanacee 
VariUa TetaQa 
Vauquulinia cuiyuibnsa 
\ erbenaLfB 
' erbena Aubktia 

tipinnaliUda 



na podocephala 
capitatieja 
Virginica 
microplera 
polyce/.!mla 

Lindheimen 

a Anagallis 
peregrina 

la arsjrea 
dcnaiQura 
las^in.arpi 



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Vic la exi^ua 

pulcbella 

Vigaa villosa 

gtabra 

laleola 

Vi^aera cordifjlia 

laciQiaCa 
Villanora chrysfmtberaoide^ 
Viola adunca 

cui^ullaCB 

lobata 

ocellata 
pedauculata 
Violaot e 
Vitacese 
Vins <estiTali9 
bipinnata 
Califnrmca 

Walthena detonsa 
Wedelia 
Wedelia hiepida 
Werlgenta laspida 
Te.ana 
Wiaaadula rnnci: Dulata 
Wislizena refracts 
Withami; sordido 

Woodeia obtnea 

rerrtmaaa. 



W I ud»j 






Xuuthlema Texanuiii 
Xerophyilum tenax 
Xymeaeeia entehoiden 
itrha lit la [ olondnna 
^erba de San Pedro 
lierba Venado 
lucca aloijulia 

anf^Ubtifolia 

baceata 

iTcvifoha 

parvlflora 

puberula 

rupu ola 

turfluht 

Whipplti 
Zaaiji(.heIUa palnscna 
7antboxUuia CarnhDiatluiii 

Pte^^^^a 
Zauscbne la Caliform a 
Zexmenia brevifiilia 

Zinnia nc ou>i^a 

grand ifl^ri 

teiiuifiora 
Zizjpbus Ijciuides 
obt leifolia 

Parrji 
Zornia teti apb} 11a 
Zygophjllacea, 



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DESCRIPTION OF THE PLATES. 



PLATE I. CLEMATIS LASIANTHA.—Pagc 29. 

A PORTION OF THE PLANT OP THE NATURAL SIZE. 

Fig, L A perfect flower. Fig, 2, A head of carpels on its peduncle; of the natural size. 

PLATE IL DELPHINIUM.— Page 30. 

UPPER PORTION OP THE PLANT OP THE NATURAL SIZE. 

Fig. 1. A sepal; enlarged. Fig. 2. One of the upper petals; equally enlarged. Fig, 3, One 
of the lower petals; also enlarged. Fig, 4. A stamen; magnified. Fig, 5, The three pistiU; 
also magnified. 

PLATE IIL DENBROMEEON RIGIDUM.— Page 32. 

A, A FLOWERING PORTION OP THE PLANT. ' E. A PORTION IN PRUIT. 

Fig. 1. A flower bud; magnified. Fig. 2. A stamen; more magnified. Fig. 3. An ovule; 
still more magnified. Fig. 4. A seed; equally magnified. Fig. 5. The same; longitudinally 
divided. Fig, G. The embryo; highly magnified. 

PLATE IV. ISOMERIS ARBOREA.— Page 35, 

UPPER PORTION OP THE PLANT OF THE NATURAL SIZE. 

Fig. 1. Plan of the flower. Fig. 2. A flower bud. Fig. 3. An expanded flower. Fig. 4. 
A petal. Fig. 5. A stamen. Fig. G. Cross section of the anther. Fig. 7. A flower from 
which the petals have been removed, showing the torus and its appendages. Fig. 8. Trans- 
verse section of the ovary. Fig, 9. A seed, seen in front. Fig. 10. The same; side view. 
Fig. 11. Longitudinal section of the same. Fig. 12. The embryo. AH the figures more or 
less magnified. 

PLATE V. FRANKENIA GBANDIFOLIA— Page 35. 

A BRANCH OP THE NATURAL SIZE. 

Fig. 1. A flower. Fig. 2. Transverse section of the calyx. Fig. 3, A flower, with the calyx 
and part of the petals removed. Pig. 4, A petal, showing the inner side. Fig. 5. A stamen, 
showing the posterior side. Fig. 6. The pistil. Fig. 7. The ovary, divided longitudinally. 
Fig. 8. Transverse section of the same. All the figures more or less enlarged. 



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-"'^ Dl^SCKIPTION OF THE I'LATEM, 

PLATE V.[. THURBERIA THESPESIOIDES.— Page 40. 

A BEANCH OF THE NATURAL SIZE. 

Fig. 1. A flower, divided longitudinally; the corrolla removed; enlarged. Pig. 2. Transverse 
section of the ovary; also enlarged. Pig. 3. Fruit of the natural size. Pig. 4. The fruit 
enlarged and longitudinally divided. Pig. 5. Transverse section of the same. Pig. 6. A seed, 
longitudinally divided and enlarged. Pig. 1. The embryo. 

PLATE VIL LITIIB.^A LAURINA.— Pago 44. 

A. A FLOWERING BRANCH. B. A BRAXCII WITHTFRUIT: BOTH OF THE- NATURAL SIZE. 

Pig. 1. A flower; enlarged. Figs. 2 and 3. These figures are incorrect, as they do not show 
the disk upon which the petals and stamens are inserted. Pig. 4. The pistil; more magnified. 
Pig. 5. The same, longitudinally divided. Pig. 6. The ovule; more magnified. Pig. 7. A 
drupe, with the persistent calyx. Fig. 8. The same, longitudinally divided. 

PLATE Vm. HOLACANTIIA EMORYL— Page 45. 

Fig. 1. A flowering branch of tho sterile plant. Pig. 2. A branch of the fertile plant. Fig. 
3. A branch in fruit: all the figures of the natural size. Pig. 4. A flower bud, from the sterile 
plant. Fig. 5. A sterile flower; and Fig. 6. The same, longitudinally divided. Pig. 1. Au 
inside view of a magnified stamen. Fig. 8. An outside view of the same. Fig. 9. Compound 
pistil of a fertile fiower; magnified. Fig. 10. The same, longitudinally divided and more 
magniiicd. Pig. 11. A drupe, magnified; and Fig. 13. The same, longitudinally divided. Pig. 
12. The carpophore. 

PLATE IX. CEAN0THU3 RIi>IDUS.— Page 45. 

A, A FLOWERING, AND B, A FRUCTiyEBOUS, BKANCH, OP THE NATURAL SIZE. 

Fig. 1. A flower; magnified. Fig. 2. The pistil; more magnified. Pig. 3. The ovary; stil^ 
more magnified, and longitudinally divided. Pig. 4. Transverse section of the same. Fig. 5. 
The persistent base of the calyx. 

PLATE X. CEANOTHUS BENTATUS.— Page 46. 

A FLOWERING BRANCH, OF THE NATURAL SIZE. 

Fig. 1. A flower; magnified. Fig. 2. Petal from a bud. Pig. 3. Stamen, from the same. 
Fig. 4. Petal and stamen from an open flower. Pig. 5. Pistil and disk; the ovary with three 
fleshy protuberances at the summit. Fig. 6. Transverse section of the ovary. Pig. 7. Longi- 
tudinal section, showing one of the cells laid open, and showing the erect ovule. Fig. 8. A 
separate ovule. All the figures more or less magnified. 

PLATE XI. CEANOTHUS CRASSIFOLIUS.— Page 46. 

A FLOWERING BRAKCH, OF THE NATURAL SIZE. 

Pig. 1. An expanded flower; magnified. Fig. 2. An unexpanded fiower; also magnified. 
Fig. 3. A petal and stamen from the same. Fig. i. Transverse section of the ovary; more 
magnified. Pig. 5. Portion of the ovary; more highly magnified; showing one of the cells 
with its contained ovule. 



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DESCRirXION OF TIIH PLATES. 263 

PLATE XII. POLTGALA NUTK AX A. — Page 49. 

A PLANT OF THE NATURAL SIZE. 

Fig. 1. A flower laid open; moderately enlarged. Fig. 2. Sepals; «, the upper odd one; ?i, 
a lateral upper one; c, a wing. Fig. 3. Corolla laid open, showing the stamens; magnified. 
Fig. 4. Au anther, considerably more enlarged. Fig. 5. The pistil; magnified. Fig. 6. A 
capsule divided longitudinally, showing the pendulous seeds, considerably magnified. Fig. 7. 
Transverse section of the same. Fig. 8, A seed; more highly magnified. 

PLATE XIIL KRAMERIA CANESCENS.— Page 49. 

A rOKTIOS OP THE PLANT OP THE NATURAL SIZE. 

Fig. 1. Plan of the flower. Fig. 2. A flower bud and bractcoles; somewhat enlai^ed. 
Fig. 3. An expanded flower; more enlarged. Fig. 4. The throe upper petals. Fig. 5. The 
two lower fleshy and glandular petals; one an inside view, the other an outside view; the last 
two figures considerably magnified. Figs. 6-8. Different magnified views of a stamen, (fig. 6 
shows the vertical opening.) Fig. 9. The pistil; moderately enlarged. Fig. 10. The same 
considerably magnified and divided longitudinally. Fig, 11. Transverse section of the same. 
Pig. 12. Theovules, or rather young seeds detached. Fig, 13. A seed; considerably magnified. 
Fig. 14. A fruit of the natural size. Fig. 15. TJio upper part of one of the barbed prickles 
of the fruit pretty highly magnified. 

PLATE XIV. PTCKERINGIA MONTANA.— Page 51. 

A BRANCH OP THE NATURAL SIZE. 

Fig. 1. The vexillum. Fig. 2. One of the wings. Fig. 3. A keel-petal. Pig. 4. A flower 
with part of the calyx and the corolla cut away. The preceding figures moderately enlarged. 
Pig, 5. Part of a stamen; considerably magnified. Fig. 6. The pistil, equally maginfied, and 
the ovary longitudinally divided. Fig. 7. An immature seed; more highly magnified, 

PLATE XV. HOSACKIA GRACILIS.— Page 54. 

A PLANT OP THE NATURAL SIZE, IN FLOWER AND FRUIT. 

Pig. 1. A flower somewhat enlarged. Fig. 2. Separate petals; magnified; a, the vexillum; 
h, one of the wings; c, one of the keel petals. Pig. 3. A seed; considerably magnified. 

PLATE XVL ASTRAGALUS (PHAOA) LEUCOPSIS. — Page 56. 

A. UPPER PART OP THE PLANT OP THE NATURAL SIZE. B. A PEDUNCLE BEARING MATURE POLS. 

Fig. 1. A flower with the petals removed; moderately enlarged. Fig, 2. Separate petals; 
a, the vexillum; &, one of the wings; c, the keel. Fig. 3. The stamens and pistil; more mag- 
nified. Fig. 4. The pistil with its stipe; equally magnified. Fig. 5. The ovary laid open; 
more magnified. Fig. 6. A very young seed; considerably magnified. Fig. 7. Transverse 
section of a pod, of the natural size. Fig. 8, A seed; considerably magnified. 



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'ib* DESCHIPTION OF THE PLATES. 

PLATE XVII. ASTRAGALUS CROTALARI^.'— Pago 50. 

A. UPPER PART OP THE PLANT. B. A RACEME OP PODS: BOTH OP THE NATURAL SIZE. 

Fig. 1. A separate flower; moderately enlarged. Fig. 2. The keel; more enlarged. Fig. 3. 
The stamens, with the pistil enclosed in the sheath of filament; equally magnified. Fig. 4. 
The pistil detached. Fig. 5. An ovule; pretty highly magnified. 

PLATE XVIIL CH^TOCALYX SCHOTTIL— Page — . 

A FLOWERING BRANCH OP THE NATURAL SIZE. 

Fig. 1. The petals separated; a, the vexillum; bl, the wings; e, the keel; moderately magni- 
fied. Pig. 2. Lower portion of a wing; more magnified. Fig. 3. The monadelphous stamens 
and the exeerted style; still more magnified. Pig. 4. Pistil with the cavity of the ovarj' laid 
open; equally magnified. Fig. 5. Flower from which the coroUa has fallen; less magnified. 
Fig. 6. Immature pod, showing the wing-like termination; moderately enlarged. Figs. 1 and 8. 
Pods of C. Wislizeni, of the natural size. Fig. 9. A seed of the natural size. Fig. 10. The 
emhryo detached and magnified. 

PLATE XIX. AC^NA PINNATIFIDA— Page fi.S. 

A PLANT OP THE NATURAL SIZE. 

Fig. 1. An expanded ilowcr; considerably magnified. Fig. 2. Tlie calyx, shown separately 
and equally magnified. Pig. 3. Part of a stamen; more magnified. Fig. 4. A flower divided 
longitudinally, considerably magnified. Pig. 5. The pistil detached and equally magnified. 
Pig. 6. An ovule. 

PLATE XX. ADENOSTOMA SPAESIFOLIA.— Page fi3. 

A BRANCH OP THE NATURAL SIZE. 

Fig. 1. A flower with bracts at the base of the calyx; magnified. Fig. 2. The same with 
the bracts cut away. Fig. 3. A portion of the flower, more magnified; showing a petal and 
thre^ stamens. Fig. 4. The pistil; equally magnified. Pig. 5. The ovary of the same laid 
open, and exposing one of the ovules. Fig. 6. Transverse section of the ovary. Fig. 7. 
Fructiferous calyx, with the persistent filaments, magnified. Pig. 8. The fruit detached from 
the same. 

PLATE XXI. ROSA GYMNOSrEEMA.— Page — . 

A FLOWERING BRANCH OP THE NATURAL SIZE. 

Fig. 1. A petal; enlarged. Fig. 2. A stamen; considerably magnified. Fig. 3. Longitudinal 
section of a flower, showing tho pistils in the ventricose calyx-tube; the petals removed; enlarged. 
Pig. 4. A detached pistil; more enlarged. Fig. 5. Longitudinal section of the ovary; magnified. 
Fig. 6. Cross section of the same; equally magnified. 

' Incorrectly named Astragalus crotalarloidus on tlie plate. 



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DESCRIPTION OF THE PLATES. ^OO 

PLATE XXn. PETALONYX THURBEEL— Page 67. 
UPPEE PART OP THE PLANT OP THE NATURAL SIZE, 

Fig. 1. Haira of the leaves and stem; highly magnified. Fig. 2. An expanded flower, with 
its bract and bracteoles; considerably magnified. Fig. 3. The same, with the petals and 
stamens removed; more magnified. Pig. 4. A petal; equally magnified. Fig. 5. Part of a 
stamen. Fig. 6. Longitudinal section of the ovary. Fig. 7. The fruit. Pig. 8. Longitudinal 
section of the same; the last four figures considerably magnified. 

PLATE XXm. RIEES MENZIESIL— Page 68. 

A BKASCH Of THE SATCEAL SIZE. 

Fig. 1. A flower, with the calyx and corolla longitudinally divided; enlarged. Fig. 2. Limb 
of a petal; considerably magnified. Fig. 3. A stamen; the lower part of the iilament cut oif; 
equally magnified. Fig. 4. Transverse section of the ovary; enlarged. Fig. 5. An ovule 
detached; magnified. 

PLATE XXIV. ECHEVERIA LANCEOLATA.— Page (iO. 

A PLANT OP THE NATURAL SIZE, (WITHOUT THE ROOT.) 

Fig. L A flower; enlarged. Fig. 2. A portion of the flower laid open; more enlarged. 
Fig. 3. The pistils; magnified. Pig. 4. One of the pistils, considerably magnified and divided 
longitudinally. Fig. 5. Transverse section of the same. Pig. 6. A detached ovule highly 
magnified. Fig. 7. A ripe carpel; magnified. 

PLATE XXV. SAXIFRAGA PARRYI.— Page 69. 

AN ENTIRE PLANT OP THE NATURAL SIZE. 

Fig. 1. A flower; enlarged. Fig. 2. Inside view of a portion of a fiower; more enlarged. 
Fig. 3. A petal and stamen, showing their insertion on the calyx; still more enlarged. Fig. 4. 
The ovary; considerably magnified. Fig. 5. Transverse section of the ovary; more magnified. 
Fig. 6. Fructiferous calyx; enlarged. Pig. 7. A seed; pretty highly magnified. Fig. 8. The 
same longitudinally divided. Fig. 9. A transverse section of the same. Fig. 10. The embryo 
detached and more highly magnified. 

PLATE XXVI. DEWEYA ARGUTA.— Page TO. 

Vl'PES. PAET OP THE PLANT OF THE NATURAL SIZE. 

Fig. 1. Fruit, moderately enlarged. Fig. 2. Upper portion of the same, considerably 
magnified. Pig. 3. Transverse section of the same, and the position of the petals indicated. 

PLATE XXVn. EURYPTERA LUCIDA.— Page 70. 

ENTIRE PLANT OP THE NATURAL SIZE. 

Fig. 1. A flower; enlarged. Fig. 2. A petal; more enlarged. Fig. 3. The fruit; enlarged. 
Fig. 4. Transverse section of the same; considerably magnified. Fig. 5. Longitudinal section 
34 k 



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270 DESCEIPTION OP THE PLATES. 

le. Fig. 4. Longitudinal section of the same. Fig. 5. An ovule detached and highly 



PLATE LIII. PINUS LLAVEANA.— Page 208. 

A BRANCH OF THE NATURAL SIZE. 

Fig. 1. A mature cone. Fig. 2. The same, with the scales expanded. Fig. 3. A seed: all 
the figures of the natural size. 

PLATE LIT. PINUS MURICATA."— Page 209. 

A. A ERANCH WITH STAMINATE CATKINS OP THE NATUBAL SIZE. 

B. A CONE OP THE NATURAL SIZE. 

PLATE LT. PINUS INSIGNIS.— Page. 209. 

A. A BRANCH OF THE NATURAL SIZE. 

B. A COKE OF THE NATURAL SIZE. 

PLATE LVI. PINUS DEFLEXA.— Page 209. 
■LEAVES OP THE NATUBAL SIZE. 
Fig. 1. A cone. Fig. 2. A seed; both of the natural size. 

PLATE LVII. PINUS SABINIANA.— 210. 

A BRANCH WITH LEAVES, AND A CONE OF THE NATURAL SIZE, 

PLATES LVm AND LIX. PINUS TOREEYANA.— Page. 210. 

A BRANCH WITH LEAVES, AND A CONE OF THE NATURAL SIZE. 

PLATE LX. CHLOE-OGALUM POMEEIDIAKUM.—Page . 

UPPER AKO LOWER PORTION OF THE PLANT, OF THE NATURAL SIZE. 

Fig. 1. A sepal and stamen; enlarged. Fig. 2. Transverse section of the ovary; magnified. 
Fig. 3. An ovule; highly magnified. 

PLATE LXI. FEITILLAKIA LANCEOLATE.— Page . 

A AND E. BROAD AND NARROW LEAVED FORMS OP THE PLANT, OP THE NATURAL SIZE, 

Fig. 1. An exterior sepal; enlarged. Fig. 2. An interior sepal; equally enlarged. Fig. 3. 
A stamen; magnified. 

" Named P. edgariana on the plate. 



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