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BOTANICAL SERIES
VOLUME VIII
THE ne wpy or THE
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UNIVERSITY OF ILLINOIS
CHICAGO, U. S. A.
1930-1932
PRINTED IN THE UNITED STATES OF AMERICA
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CONTENTS
PAGES
Studies of American Plants III. By Paul C. Standley.
July 9, 1930 1-74
Spermatophytes, Mostly Peruvian II. By J. Francis
Macbride. July 9, 1930 ,. . . . 75-130
Studies of American Plants IV. By Paul C. Standley.
October 22, 1930 131-236
The Cyperaceae of Central America. By Paul C. Standley.
January 26, 1931 237-292
Studies of American Plants V. By Paul C. Standley.
June 25, 1931 293-398
Revision of the Genus Cosmos. By Earl Edward Sherff.
September 2, 1932 399-448
iii
866509
FB NH.t..
K.f
STUDIES OF AMERICAN PLANTS III
PAUL C. STANDLEY
The following pages are devoted chiefly to descriptions of new
species of tropical American plants, but there are listed, also, a few
new combinations necessary for conformity with the International
Rules.
Most of the new species described are from one of three principal
sources. Many of them are Venezuelan Rubiaceae, which it was
intended to publish in an enumeration of the plants of that family
occurring in Venezuela, but since the publication of that account
must be delayed for some months, it seems desirable to publish the
new species at the present time.
Many of the plants here described are from Yucatan. Their
diagnoses precede a flora of that region which, it is expected, will
be issued in the near future.
Finally, the present paper contains descriptions of a large
number of apparently new plants discovered in the current collec-
tions received for determination by Field Museum. Most of these
novelties are Central American. A few were collected by the writer
in Honduras in 1927-28, and several were found in the Salvadorean
collections which Dr. Salvador Calderon, with his customary
enthusiasm and diligence, has continued to forward.
The majority of the new Central American species were collected
in British Honduras, a country in which unwonted botanical activity
has developed during the past year. Several were detected in the
northern part of that colony by Mr. C. L. Lundell, whose large
collection of the past season is supplying the first adequate repre-
sentation of the flora of any limited region of British Honduras.
Mr. Lundell's collections have furnished the first records of the
occurrence in Central America of numerous species known pre-
viously only from Yucatan or from more northern parts of Mexico.
The majority of the new British Honduras plants here described
are from the astonishingly rich collection made lately by Mr.
William A. Schipp. He seems to have a genius for discovering rare
plants, or at least those which have escaped the attention of earlier
explorers. Certain species occurring in his series are quite unexpected
discoveries. Some represent substantial extensions of range, and
4 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
others illustrate species known heretofore only from the original
collection. Particularly noteworthy is the discovery so far north-
ward of the genus Bredemeyera, presumed previously to be confined
to South America, and of a second Central American species of
Quiina, the first having been named from Panama only recently by
the present writer.
Unless indicated otherwise, all the specimens cited on the
succeeding pages are in the herbarium of Field Museum.
PALMACEAE
Acoelorhaphe Wrightii (Griseb. & Wendl.) Wendl. Originally
described from Cuba, this handsome palm probably occurs also in
Florida and the Bahamas. It may now be added to the flora of
Central America, on the basis of a collection made in British
Honduras, along the Stann Creek Railway, in March, 1929, W. A.
Schipp 93. At first I was inclined to believe that the British Honduras
plant represented a distinct species, but the differences between it
and the Cuban form do not seem to be of specific importance.
Bactris hondurensis, sp. nov. Caudices erecti gracillimi
c. 1 m. alti, ut yidetur inermes, c. 1 cm. diam., in sicco brunnei,
glabri, internodiis c. 3 cm. longis; folia in parte superiore caudicis
sparsa; petiolus gracilis 28-33 cm. longus et ultra, supra sulcatus,
aculeis paucis gracillimis atro-brunneis vel nigrescentibus 2-3.5 cm.
longis armatus, basi valde ampliatus et yaginans; lamina bifida,
simplex vel infra medium pinnatisecta, yiridis, supra glabra vel
sparse pilosula, subtus dense molliterque pilosa, segmentis 2 termin-
alibus latissimis, latere superiore 23-27 cm. longis, 7-17 cm. latis,
inferioribus brevioribus angustioribusque, omnibus longissime et
anguste caudato-attenuatis, ad margines saepe aculeolatis, aculeolis
adpressis; spadices 4-5 cm. longe pedunculatae, 2-4 cm. longae;
fructus ruber, 1.5 cm. diam., globosus, sessilis, apice mamillatus.
Honduras: Wet forest, Lancetilla Valley near Tela, Dept. Atlantida,
alt. 150 m., March 13, 1928, Paul C. Standley 56798 (Herb. Field
Mus. No. 581,781, type). Also No. 54212 from the same locality.
This palm grows only in the deep forest well up on the hillsides
above Lancetilla. It is a slender and graceful plant, much less
offensively armed than most species of the genus.
MUSACEAE
Heliconia reticulata (Griggs), comb. nov. Bihai reticulata
Griggs, Bull. Torrey Club 31: 446. 1904.
Heliconia revoluta (Griggs), comb. nov. Bihai revoluta Griggs,
Bull. Torrey Club 42: 322. /. 3. 1915.
STUDIES OF AMERICAN PLANTS 5
ORCHIDACEAE
Cypripedium montanum Dougl. In recent years, in spite of
the extensive collections that have been made in Alaska, very few
species new to the flora of the territory have been found. To the
two species of Cypripedium hitherto known from the region may
now be added this one of altogether different appearance. The data
are as follows: Alaska: Glacier Bay, July 16, 1929, William S.
Cooper & Frances E. Andrews 212. It is remarkable that so showy
a plant should not have been found by some of the numerous col-
lectors who have visited this locality in former years.
PIPERACEAE
Peperomia achoteana Trelease, sp. nov. A moderately small,
glabrous, stoloniferous, rupicplous herb with short leafy branches;
stem 2-3 mm. thick, purplish, striate-angular; leaves alternate,
elliptic-subobovate, obtuse or abruptly emarginulate-apiculate,
acute-based, 2x2.5, 2.5x3.5, or 3.5x5.5 cm., 3-5-nerved, coriaceous,
subrevolute, paler beneath; petiole 5-10 mm. long; spikes terminal
and axillary, as yet 1x15 mm. and short-stalked; bracts round-
peltate. Honduras: On stone wall, El Achote above Siguatepeque,
Dept. Comayagua, alt. 1,500 m., February, 1928, Paul C. Standley
56160 (Herb. Field Mus. No. 581,095, type). 1
Peperomia siguatepequensis Trelease, sp. nov. A small
erect crisp-pubescent terrestrial herb; stem 2-3 mm. thick, naked
below; leaves alternate, broadly ovate, acute, subacute at the base,
5x10-15x20 mm., reddish beneath, thick but drying translucent
and 3-nerved by transmitted light; petiole very slender, 5 mm.
long; spikes terminal, filiform, 30 mm. long, closely flowered;
peduncle scarcely 5 mm. long; bracts round-peltate; berries round-
ovoid, mucronate; stigma oblique. Honduras: Moist shaded bank,
Siguatepeque, Dept. Comayagua, alt. 1,100 m., February, 1928,
Paul C. Standley 56534 (Herb. Field Mus. No. 580,969, type). 2
FAGACEAE
Quercus salvadorensis Trelease, sp. nov. Acutifoliae. Twigs
rather slender (2-3 mm.), little fluted, glabrous, reddish, with large
pale lenticels; buds glossy brown, glabrous, ellipsoid, very obtuse,
1 Peperomia achoteana Trelease, sp. nov. Herba parvula glabra
stolonifera, ramis brevibus foliatis, caule 2-3 mm. crasso striato-angulato; folia
alterna, elliptico-subobovata, obtusa vel abrupte emarginulato-apiculata, basi
acuta, 3-5-nervia, coriacea, subrevoluta, subtus pallidipra, petiolata; spicae
terminates et axillares breviter pedunculatae, bracteis orbiculari-peltatis.
2 Peperomia siguatepequensis Trelease, sp. nov. Herba parva erecta
terrestris crispo-pubescens; folia alterna late ovata acuta, basi subacuta trinervia,
petiolo gracillimo; spicae terminales filiformes densiflorae, bracteis orbiculari-
peltatis; baccae rotundato-ovoideae mucronatae, stigmate obliquo.
6 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
about 2x4 mm.; leaves persisting until after flowering time, hard-
papery, lanceolate, acute at both ends, serrate above the middle
with long-aristate deltoid teeth between which the margin is straight,
moderate (about 5x14 cm.), glossy, glabrous, dark green above, the
veins about 10x2, not looped; petiole glabrous, 1x25-40 mm.; catkins
not seen; fruit apparently biennial, the cup conical-saucer-shaped,
nearly 25 mm. in diameter, with rather thin, closely appressed,
glabrate, more or less pointed scales; acorn round-ovoid, blunt,
about 20 mm. long, dark brown and glossy, covered at the base
only. Salvador: Summit of Cerro del Guayabal, alt. 1,440 m.,
January 3-4, 1924, Salvador Calderdn 1981 (U. S. Nat. Herb., type). 1
"Roble bianco."
Quercus guayabalana Trelease, sp. nov. Linguaefoliae. Twigs
moderately stout (3-4 mm.), little fluted, rather persistently and
densely brown-tomentose, purplish gray when denuded and with
paler lenticels; buds ovoid, brown-hairy but becoming glabrate and
glossy brown, 2x4 mm.; leaves evergreen, elliptic- or lance-oblong,
acute, cordulate, entire, slightly revolute, moderately large (4-5.5x12-
17 cm.), coriaceous, tomentose becoming glabrate and glossy except
in sheltered places, the veins about 13x2 with some short inter-
mediates, looping and somewhat forked; petiole grayish-tomentose,
thick, scarcely 5 mm. long; staminate catkins 10 cm. long, floccose,
rather loosely flowered, the glabrous ellipsoid anthers somewhat
exserted; fruit biennial, paired at the end of a peduncle scarcely 1
cm. long at the end of the first year; scales of the young cup rounded,
gray-tomentulose except at the margin. Salvador: Summit of
Cerro del Guayabal, alt. 1,440 m., January 3-4, 1924, Salvador
Calderdn 1982 (U. S. Nat. Herb., type). 2
"Roble negro."
MORACEAE
Coussapqa Purpusii, sp. nov. Arbor semi-epiphytica, ramulis
crassis ferrugineo-brunneis glabris, lenticellis paucis magnis pallidis
conspersis; stipulae lanceolato-oblongae 12-18 mm. longae longi-
acuminatae, dorso et praesertim versus apicem minute sericeae,
brunneae, caducae; folia petiolata, petiolq 1.5-3 cm. longo gracili
glabro supra breviter sulcato; lamina coriacea, oblonga, elliptico-
oblonga vel ovato-oblonga, 9-14 cm. longa, 4-6 cm. lata, acuta vel
1 Quercus salvadorensis Trelease, sp. nov. Ramuli subgraciles glabri
pallide lenticellati; folia subpersistentia, crasse papyracea, lanceolata, utrinque
acuta, supra medium serrata, serraturis deltoideis longiaristatis, lucida, glabra,
petiolata; nux ut videtur biennis; cupula conico-patelliformis, squamis arete
adpressis subtenuibus glabratis plus minusve acutatis, nuce rotundato-ovoidea,
fusco-brunnea, lucida.
2 Quercus guayabalana Trelease, sp. nov. Ramuli validiusculi, subper-
sistenter brunneo-tomentosi, serius purpureo-grisei, pallide lenticellati; folia
sempervirentia, elliptico- vel lanceolato-oblonga, acuta, cordulata, integra,
subrevoluta, coriacea, tomentosa, serius glabrata, petiolo griseo-tomentoso
crasso; spicae masculae floccosae laxiflorae, antheris subexsertis; nuces biennes
ad apicem pedunculi brevis geminatae, cupulae juvenilis squamis rotundatis,
margine excepto griseo-tomentulosis.
STUDIES OF AMERICAN PLANTS 7
acuminata, basi rotundata, glabra, supra yiridis, nervis vix elevatis,
subtus pallida, costa gracili elevata, basi trinervia; inflorescentiae
numerosae axillares cymosae, 2-3 cm. longe pedunculatae, dichoto-
mae, ramulis gracilibus glabris; capitula globosa yel depresso-globosa
4-8 mm. lata, densissime multiflora, pedunculis 3-10 mm. longis
apicem versus paullo dilatatis. Mexico: Zacuapam, Veracruz,
April, 1928, C. A. Purpus 11162 (Herb. Field Mus. No. 588,337,
type); March, 1908, Purpus 5996.
This is the first true Coussapoa to be reported from Mexico. A
tree described by the writer under the name of C. Rekoi is stated by
Mildbraed (Notizbl. Bot. Gart. Berlin 10: 413. 1928) to be synony-
mous with Poulsenia aculeata Eggers, of Ecuador.
Ficus Schippii, sp. nov. Arbor epiphyticus 15-metralis, trunco
10-12.5 cm. diam., ramulis crassiusculis teretibus brunnescentibus
et plus minusve griseis glabris, internodiis brevibus; stipulae 15-18
mm. longae, anguste lanceolatae, longe attenuatae, crassae, brun-
nescentes, glabrae, caducae; folia longiuscule petiolata, petiolo
gracili 1.5-5.5 cm. longo glabro; lamina subcoriacea, oblonga vel
pvali-oblonga, 8-14.5 cm. longa, 4.5-5.8 cm. lata, apice obtusa vel
interdum rotundata et abrupte cuspidato-acuminata, acumine
angusto c. 1 cm. longo obtuso, basi obtusa vel rotundata, integra,
utrinque glabra, costa nervisque supra prominulis, costa subtus
elevata, gracili, nervis lateralibus utroque latere c. 13, angulo lato
divergentibus, fere rectis, prominentibus, prope marginem conjunctis;
receptacula geminata sessilia subglobosa vix 5 mm. diam. glabra,
ostiolo piano, involucre adpresso glabro, lobis 2 subaequalibus c. 1
mm. longis apice rotundatis. British Honduras: Middlesex, alt.
60 m., September 1, 1929, W. A. Schipp 334 (Herb. Field Mus.
No. 602,917, type).
Since the writer published, in 1917, an account of the Mexican
and Central American species of Ficus (Contr. U. S. Nat. Herb. 20:
1-35), very few new species of the genus have been detected in
Central America. This is remarkable, in view of the fact that
during the past twelve years a great deal of collecting has been
done in the region. Apparently, most of the species of Central
America have been collected.
The present plant does not agree, however, with any of the
species hitherto recorded for Central America. Probably it is
related to F. Colubrinae Standl., but that differs in having smaller
leaves, more or less pubescent, and with only 2-4 pairs of lateral
nerves.
LORANTHACEAE
Struthanthus cassythoides Millsp., sp. nov. Frutex epiphy-
ticus omnino glaber, ramis longis ut videtur pendentibus, saepe
volubilibus, griseis, teretibus, internodiis brevibus vel elongatis;
8 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
folia subsessilia (petioli vix 2 mm. longi), obqvata vel oblongo-
oboyata, 2.5-3.5 cm. longa, 0.8-1.5 cm. lata, apice late rotundata,
basi cuneata, crassa, basi 4-5-neryia, subtus minute granulosa;
cymae solitariae vel ad nodos fasciculatae, valide 2-5 mm. longe
pedunculatae, 3-10-florae, floribus splitariis vel congestis sessilibus;
calyx ovario adjecto 1 mm. longus, limbo truncate; petala 4 linearia
3 mm. longa; filamenta valida petalis aequilonga; stylus crassus
glaber petalis aequilongus. Yucatan: Progreso, G. F. Gaumer 1174
(Herb. Field Mus. No. 438,251, type), 2220, 2458. Without definite
locality, Gaumer 23997.
This was indicated as a new species of Loranthus by Dr. Mill-
spaugh, but no description of it has ever been published. The
Yucatan plant is perhaps related to S. diversifolius (Benth.) Standl.,
a little-known species of central Mexico.
ARISTOLOCHIACEAE
Aristolochia Schippii, sp. nov. Frutex alte scandens c. 10 m.
longus, ramulis subteretibus, vetustioribus cortice crassa suberosa
profunde sulcata et corrugata qbtectis, c. 1.5 cm. crassis, novellis
glabris; folia longipetiolata, petiolo 10-15 cm. longo gracili glabro;
lamina subcoriacea, late deltoideo-ovata, c. 24 cm. longa et 18 cm.
lata, acuta vel breviter acuminata, basi profunde cordata, sinu
subquadrangulari c. 5 cm. longo et 3.5 cm. lato, Ipbis basalibus late
rotundatis, glabra, 5-nervia, nervis utrinque prominentibus, nervulis
subtus prominulis et arete reticulatis; flores ut videtur e ramis
defoliatis nascentes, fasciculati, pedicellis gracillimis 2-2.5 cm. longis;
calyx glaber, flavescens, venis rubro-brunneis reticulatis, 5 cm. longus,
paullo curvatus, parte basali inflata 1 cm. longa et 7 mm. lata,
tubo 1.5 cm. longo, labio fere 3.5 cm. longo longe acuminato basi
explanato 14 mm. lato; capsula 11 cm. longa, 1 cm. crassa, basi
abrupte contracta et stipitata, apice quoque contracta et acuminata,
6-costata, glabra. British Honduras: In jungle, Big Creek, alt.
15 m., March 11, 1929, W. A. Schipp 75 (Herb. Field Mus. No.
588,326, type).
POLYGONACEAE
Coccoloba cardiophylla, sp. nov. Omninp glabra, ramulis
teretibus obscure striatis griseis, internodiis brevibus vel elongatis;
ocreae caducae 8-12 mm. longae crassae brunneae; petioli graciles
1-2 cm. longi; lamina ovato-rotundata vel rotundato-ovata, 5-7 cm.
longa, 3.5-5.5 cm. lata, apice obtusa vel acutiuscula, basi rotundata
et emarginata vel profunde cordata, sinu usque ad 6 mm. longo,
lobis basalibus rotundatis, subcoriacea, opaca, concolor, basi 5-
nervia, costa utrinque neryos 3-4 graciles subtus prominentes
emittente, nervulis gracillimis arctissime reticulatis sed inconspicuis;
racemi flpriferi 1-2 cm. longi, sessiles vel subsessiles, fructiferi c. 3
cm. longi, laxi et remotiflori, pedicellis validis divaricatis 2-3 mm.
longis ocreolis minutis multo longioribus; sepala 1 mm. longa ovalia;
STUDIES OF AMERICAN PLANTS 9
stamina sepalis aequilonga. Yucatan: Without definite locality,
in 1917-21, G.F.Gaumer 24013 (Herb. Field Mus. No. 552,016, type).
Kancabtsonot, Gaumer 23865, 23905.
Coccoloba cardiophylla is well differentiated from other Mexican
species by the small broad leaves with cordate base, and by the long
pedicels.
Coccoloba changuinolana, sp. nov. Arbor usque ad 9 m.
alta, trunco 10-13 cm. diam., ramulis gracilibus teretibus rimosis
glabris, internodiis brevibus; ocreae deciduae; folia breviter petiolata,
petiplo 1-2.2 cm. longo subtereti supra anguste sulcato glabro;
lamina crasse membranacea, ovalis vel ovali-elliptica, 12-21 cm.
longa, 5.5-10.5 cm. lata, apice acuta vel plerumque rotundata et
abrupte breviterque acuminata, acumine vix 1 cm. longo triangulari,
basi obtusa vel subrotundata et saepius plus minusve obliqua,
glabra, costa nervisque supra prominulis, subtus elevatis, costa
gracili, nervis lateralibus utroque latere c. 11, gracilibus, angulo
lato adscendentibus, subarcuatis, juxta marginem conjunctis,
nervulis prominulis reticulatis; racemi terminales foliis saepe longi-
ores, solitarii, simplices, brevissime pedunculati, 4-19 cm. longi,
dense vel remote multiflori, rhachi minute puberula, ocreolis 1.5-2
mm. longis; pedicelli in anthesi ocreolis subaequales, glabri, peri-
anthio glabro 1.5-2 mm. longo; stamina exserta; fructus late ovoideus
7 mm. longus obtusus, perianthii tubo accrescente inclusus.
Panama: Farm Six, Changuinola Valley, March 3, 1924, V. C.
Dunlap 499 (Herb. Field Mus. No. 580,004, type). Daytonia Farm,
region of Almirante, in 1928, Cooper 421. Costa Rica: La Palma,
Changuinola Valley, Dunlap 467.
Related to C. Schiedeana Lindau, of Mexico and northern Central
America, in which the leaves are coriaceous.
AMARANTHACEAE
Alternanthera martinicensis (Moq.), comb. nov. Telanthera
martinicensis Moq. in DC. Prodr. 13 2 : 366. 1849.
Alternanthera obovata (Mart. & Gal.), comb. nov. Bucholzia
obovata Mart. & Gal. Bull. Acad. Brux. 10 1 : 348. 1843. Telanthera
obovata Moq. in DC. Prodr. 13 2 : 370. 1849.
Alternanthera megaphylla (Standl.), comb. nov. Achyranthes
megaphylla Standl. N. Amer. Fl. 21: 141. 1917.
Alternanthera panamensis (Standl.), comb. nov. Achyranthes
panamensis Standl. Contr. U. S. Nat. Herb. 18: 89. 1916.
Alternanthera stenophylla (Standl.), comb. nov. Achyranthes
stenophylla Standl. Contr. U. S. Nat. Herb. 18: 90. 1916.
Alternanthera pycnantha (Benth.), comb. nov. Brandesia
pycnantha Benth. Bot. Voy. Sulph. 157. 1884. Telanthera pycnantha
Moq. in DC. Prodr. 13 2 : 376. 1849.
10 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
Alternanthera cordobensis (Standl.), comb. nov. Achyranthes
cordobensis Standl. Contr. U. S. Nat. Herb. 18: 90. 1916.
Aerva scandens (Roxb.) Wall., f. sanguinea, f. nov. Folia
sanguinea vel purpurea; ceteris formae typicae omnino similis.
Cuba: Jardin Botanico, Havana, cultivated, March 4, 1929, L. H.
Bailey 12116 (Herb. Field Mus. No. 600,264, type).
Dr. Bailey reports that this red-leaved form is grown in Havana
as a border plant, in the same manner as some of the well-known
fancy-leaved forms of the genus Alternanthera.
CHENOPODIACEAE
Suaeda Palmeri (Standl.), comb. nov. Dondia Palmeri Standl.
N. Amer. Fl. 21: 91. 1916.
Suaeda tampicensis (Standl.), comb. nov. Dondia tampicensis
Standl. N. Amer. Fl. 21: 91. 1916.
Suaeda taxifolia (Standl.), comb. nov. Dondia taxifolia Standl.
N. Amer. Fl. 21: 91. 1916.
Suaeda brachyphylla, nom. nov. Dondia bremfolia Standl. N.
Amer. Fl. 21: 92. 1916, not S. brevifolia Phil., 1895.
Atriplex nitens Schkuhr. This introduced species is not listed
from Utah, but the following collection may be reported: Damp
saline soil, Beck's Hot Springs, Salt Lake County, September 12,
1924, S. Flowers No. 643. The specimen was communicated by
Professor A. 0. Garrett.
NYCTAGINACEAE
Allionia cristata (Standl.), comb. nov. Wedelia cristata Standl.
Contr. U. S. Nat. Herb. 12: 331. 1909.
Allionia glabra (Choisy), comb. nov. Allionia incarnata var.
glabra Choisy in DC. Prodr. 13 2 : 435. 1849. Wedeliella glabra Cock-
erell, Torreya 9: 167. 1909.
Allionia glabra Kuntze (Rev. Gen. 2: 533. 1891) is a member of
the genus Oxybaphus, therefore the specific name glabra is valid for
a species of the genus Allionia, as that generic name is employed
here.
Oxybaphus corymbosus (Cav.), comb. nov. Mirabilis corym-
bosa Cav. Icon. 4: 55. 1797. Allionia corymbosa Kuntze, Rev. Gen.
2: 533. 1891.
Oxybaphus microchlamydeus (Standl.), comb. nov. Allionia
microchlamydea Standl. Contr. U. S. Nat. Herb. 13: 405. 1911.
STUDIES OF AMERICAN PLANTS 11
Oxybaphus gausapoides (Stand!.), comb. nov. AUionia gausa-
poides Standl. Contr. U. S. Nat. Herb. 13: 406. 1911.
Oxybaphus decipiens (Standl.), comb. nov. AUionia decipiens
Standl. N. Amer. Fl. 21: 233. 1918.
Oxybaphus lanceolatus (Rydb.), comb. nov. AUionia lanceo-
lata Rydb. Bull. Torrey Club 29: 691. 1902.
Oxybaphus pumilus (Standl.), comb. nov. AUionia pumila
Standl. Contr. U. S. Nat. Herb. 12: 345. 1909.
Oxybaphus rotundifolius (Greene), comb. nov. AUionia
rotundifolia Greene, PL Baker. 3: 33. 1901.
Oxybaphus Grayanus (Standl.), comb. nov. AUionia Grayana
Standl. N. Amer. Fl. 21: 227. 1918.
Oxybaphus longipes (Standl.), comb. nov. AUionia longipes
Standl. N. Amer. Fl. 21: 229. 1918.
CARYOPHYLLACEAE
Drymaria excisa, sp. nov. Herba gracilis, caulibus usque ad
50 cm. longis, internqdiis elongatis, inferioribus glabris, superioribus
viscido-puberulis; folia longe petiolata, petiolo plerumque 1-2 cm.
longo fere filiformi glabro, foliis superioribus interdum fere sessilibus;
lamina membranacea, latissime rotundato-obdeltoidea vel interdum
fere rotundata, 1-2.8 cm. longa, 1-3.4 cm. lata, apice truncata vel
brevissime retusa et apiculata, rarius rotundata, basin versus paullo
angustata et late cuneata, trinervia, glabra, nervis late arcuatis, apice
laminae conjunctis; stipulae lineares vel subulatae 1.5-2.5 mm. longae
erectae; flores pauci subumbellati, pedicellis gracilibus elongatis
puberulis; sepala lanceolato-oblonga 5-6 mm. longa viridescentia
acuta minute puberula; petala alba sepalis paullo longiora.
Mexico: Real Alto, trail to El Tajo de Santiago, Sierra Madre
Occidental, Jalisco, on densely wooded, damp, north slope, alt.
750 m., February 23, 1927, Ynes Mexia 1748 (Herb. Field Mus.
No. 579,891, type).
The species may be recognized easily by the form of its leaves,
which are very different from those of any other species.
MENISPERMACEAE
Hyperbaena nectandrifolia, sp. nov. Ramuli brunneo-
olivacei teretes striati glabri internodiis brevibus; petioli 1.3-4 cm.
longi crassiusculi, superne paullo incrassati, subteretes, glabri;
lamina crasse coriacea, integra, oblonga vel anguste oblonga, 11-24
cm. longa, 4-8.5 cm. lata, acuta vel acuminata, basi acuta vel
acutiuscula et saepe inaequalis, supra viridis, lucida, costa ut nervi
et nervuli prominente, nervulis arete reticulatis, subtus vix pallidior,
sublucida, costa crassiuscula elevata, nervis lateralibus utroque
12 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
latere 6-8, angulo acuto adscendentibus, yalde inaequalibus, eleyatis,
subarcuatis, remote a margine irregulariter conjunctis, nervulis vix
prominulis, lamina e basi saepe trinervia; paniculae laxae petiolis
paullo longiores, fasciculatae, ramulis gracilibus minute ferrugineo-
pilosulis, floribus breviter pedicellatis; bracteis minutis pilosulis;
flpres in alabastro vix 1 mm. lati, sepalis subrotundatis extus minute
pilosulis. Yucatan: Izamal, in 1888, G. F. Gaumer (Herb. Field
Mus. No. 181,606, type).
The plant is rather similar to H. phanerophlebia Standl., but in
that species, of Salvador, the flowers are glabrous or nearly so, and
the leaves cuneately acute at the base and with distinct venation.
Hyperbaena isophylla, sp. nov. Ramuli graciles teretes
striati glabri, olivacei vel grisei, internodiis brevibus vel elongatis;
petioli graciles 1.5-2.2 cm. longi, subteretes, prope apicem paullo
tumidi; lamina coriacea, lucida, integra, elliptico-oblonga vel
lanceolatp-oblonga, 10-13 cm. longa, 4-5 cm. lata, acuminata, basi
acuta et interdum plus minusve inaequalis, costa ut nervi et nervuli
utrinque prominente, nervulis arete reticulatis, fere concolor,
pinnatinervia, costa gracili, nervis lateralibus utroque latere c. 6,
inaequalibus, angulo acuto adscendentibus, arcuatis, prope mar-
ginem irregulariter conjunctis; paniculae masculae fasciculatae,
axillares et e ramulis defoliatis nascentes, laxe multiflorae, petiolis
multo longiores, ramis gracillimis dense puberulis, floribus breviter
pedicellatis, bracteis et bracteolis minutis dense pilosulis; flores in
alabastro vix 1 mm. diam., pubenlli. Costa Rica: Santo Domingo
de Golfo Dulce, in 1896, A. Tonduz 7232 (Herb. Field Mus. No.
195,419, type).
The leaves are somewhat like those of H. phanerophlebia Standl.,
but in that species the blades are commonly more or less 3-nerved
or triplinerved, and the flowers are glabrous or nearly so.
MYRISTICACEAE
Dialyanthera multiflora, sp. nov. Arbor 9-metralis, trunco
10 cm. diam., ramulis gracilibus teretibus, vetustioribus ochraceis
vel brunnescentibus, novellis glabris vel sparse et minutissime
puberulis, internodiis plerumque 5-8 mm. longis; folia alterna
petiolata, petiolo gracili 5-8 mm. longo sparse et minute puberulo
vel glabrato supra sulcato; lamina coriacea, lanceolato-oblonga,
5-8 cm. longa, 1.5-2.5 cm. lata, acuta vel sensirn acuminata, apice
ipso obtuso, basi acuta, glabra, supra viridis, minute pallido-
puncticulata, nervis subimpressis, subtus pallida, costa gracili
elevata, nervis lateralibus utroque latere c. 13, angulo lato adscen-
dentibus, prominentibus, subarcuatis, prope marginem conjunctis;
inflorescentiae laterales, floribus umbellatis, umbellis plerumque
5-7-floris, racemosis vel paniculatis, paniculis anguste pyramidalibus
pedunculatis 3-6 cm. longis, pedunculis infimis plerumque 6-10 mm.
longis, sparse puberulo-tomentellis, superioribus multo brevioribus,
STUDIES OF AMERICAN PLANTS 13
divaricatis; flores pedicellati, pedicellis gracilibus 2-4 mm. longis
dense tomentellis; perianthium 1.5-2 mm. longum dense ochraceo-
tomentosum, in alabastro obovoideum et apice obtusum. British
Honduras: In jungle, Stann Creek Railway, alt. 30 m., July 16,
1929, W. A. Schipp 279 (Herb. Field Mus. No. 598,216, type).
The small leaves recall those of D. acuminata Standl., of Panama,
but in the latter the leaves have long and narrow acuminations and
longer petioles, and the inflorescences are few-flowered and but little
longer than the petioles.
CRUCIFERAE
Sisymbrium Storkii, sp. nov. Herba ramosa, ramis cras-
siusculis teretibus satis dense pilis longis mollibus albidis pilosis;
folia caulina sessilia, obovato-oblonga vel lanceolato-oblonga, 4-8
cm. longa, 1-2.5 cm. lata, herbacea, acuminata, basi versus paullo
angustata, basi ipsa breviter cordata et amplexicauli, auriculis
rotundatis 2-4 mm. longis, subintegra vel remote serrato-denticu-
lata, utrinque albido-pilosa; racemi 20-30 cm. longi et ultra, remoti-
flori, rhachi glabra valida, pedicellis late adscendentibus solitariis
3-6 mm. longis glabris; sepala purpurascentia oblonga obtusa
glabra 2 mm. longa; stamina sepalis aequilonga, filamentis crassis,
antheris oblongis; siliqua linearis subteres 2-3 cm. longa glabra,
valvis tenuiter trinerviis, rostro crasso cylindraceo 1.5 mm. longo.
Costa Rica: El Roble, alt. 2,850 m., common in forest, May 16,
1928, H. E. Stork 2005 (Herb. Field Mus. No. 598,852, type).
Sisymbrium costaricense Standl., the only other representative
of the genus known from Costa Rica, has glabrous stems and leaves
and slightly larger flowers.
LEGUMINOSAE
Schrankia Nuttallii (DC.), comb. nov. Leptoglottis Nuttallii
DC. Me*m. Le"gum. 451. 1825. S. uncinata T. & G. Fl. N. Amer.
1: 400. 1840.
Schrankia hystricina (Small), comb. nov. Leptoglottis hystricina
Small ex Britt. & Rose, N. Amer. Fl. 23: 139. 1928.
Schrankia paucijuga (Britt. & Rose), comb. nov. Leptoglottis
paucijuga Britt. & Rose, N. Amer. Fl. 23: 139. 1928.
Schrankia occidentalis (Woot.& Standl.), comb. nov. Morongia
occidentalis Woot. & Standl., Contr. U. S. Nat. Herb. 16: 135. 1913.
Schrankia Halliana (Britt. & Rose), comb. nov. Leptoglottis
Halliana Britt. & Rose, N. Amer. Fl. 23: 141. 1928.
Schrankia confusa (Britt. & Rose), comb. nov. Leptoglottis
confusa Britt. & Rose, N. Amer. Fl. 23: 141. 1928.
Schrankia microphylla (Dryand.), comb. nov. Mimosa
microphylla Dryand. ex J. E. Sm., Insects Georgia 2: 123. 1797.
S. uncinata Willd. Sp. PI. 4: 1043. 1806.
14 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
Schrankia Palmeri (Britt. & Rose), comb. nov. Leptoglottis
Palmeri Britt. & Rose, N. Amer. Fl. 23: 143. 1928.
Hymenaea Courbaril L. If one were to read the description
of Inga megacarpa Jones (Contr. West. Bot. 15: 140. 1929), and
attempt to place the plant by description alone, one would prob-
ably encounter some difficulty. Examination of the type collec-
tion, however, shows at once that the "Inga" is really Hymenaea
Courbaril, one of the most common trees of the Pacific coast of
Mexico. The leaflets are, of course, a single pair, as usual, not
"about 5 pairs," as described by the author.
Parosela Gaumeri, sp. nov. Frutex glaber vel fere glaber,
ramulis gracillimis ochraceis glandulis numerosis elevatis nigres-
centibus conspersis; rhachis cum petiolo 7-14 mm. longa, glandulosa,
interdum prope basin minute puberula, non alata; stipulae anguste
subulatae 1-1.5 mm. longae; stipellae minutae glanduliformes;
foliola c. 7, oblonga vel cuneato-oblonga, 4-7 mm. longa, 2-4 mm.
lata, apice late rotundata, basi obtusa, supra viridia, subtus paullo
pallidiora, dense glandulis magnis conspersa, petiolulis 0.7 mm.
longis; spicae solitariae vel paniculatae, terminales, sessiles vel
breviter pedunculatae, 1-1.5 cm. longae, subdensae, pauci- vel
multiflorae, floribus sessilibus, rhachi saepe flexuosa, dense glan-
dulis magnis elevatis fuscis onusta; bracteae caducae ovatae subulato-
cuspidato-acuminatae, glabrae, glandulosae, calyce multo breviores;
calyx 3-3.5 mm. longus, extus glaber, 10-costatus, glandulis magnis
elongatis inter costas onustus, fauce dense barbata, lobis subulato-
acuminatis apice saepe incurvis inaequalibus, lobo maximo tubum
fere aequante, ceteris multo brevioribus; petala in sicco ochroleuca,
vexillo 5 mm. longo, alis carinaque brevioribus. Yucatan: Chichan-
kanab, G. F. Gaumer 1457 (Herb. Field Mus. No. 57,386, type).
San Anselmo, Gaumer 1727. Pocoboch, Gaumer 2408.
The plant is a well-marked species, perhaps referable to
Rydberg's group Thyrsiflorae, although certainly very different
from any of the species placed in it.
Chaetocalyx yestita, sp. nov. Herba gracilis volubilis ramosa,
caulibus dense pilis gracilibus patentibus pilosis; stipulae lanceolatae
3-4 mm. longae attenuatae virides pubescentes; folia pinnata
5-foliolata petiolata, rhache dense breviterque pilosa, foliolis breviter
petiolulatis ovalibus vel oblongo-ovalibus 1.2-3 cm. longis, 0.7-1.3
cm. latis, utrinque rotundatis, apice apiculatis, tenuibus, supra
viridibus et curvo-puberulis, subtus pallidioribus, dense pilis brevibus
saepe curvis plerumque fulvis pilosis; flores in axillis fasciculati,
pedicellis 8-12 mm. longis gracilibus dense pilosis; calyx 6-7 mm.
longus dense pilosus, pilis paucis crassioribus lutescentibus interdum
admixtis, lobis triangularibus vel lanceolato-triangularibus acutis
vel acuminatis plerumque tubo brevioribus; vexillum suborbiculare
STUDIES OF AMERICAN PLANTS 15
12-15 mm. longum apice profunde emarginatum, extus dense pilis
brevibus albidis adpressis pubescens; alae vexillo aequilongae
glabrae; legumen lineare 7.5-11 cm. longum, 1.5 mm. latum, dense
pubescens, c. 10-articulatum, apice versus stylum gracilem longi-
attenuatum, segmentis c. 1 cm. longis conspicue longitrorsum
striatis. Yucatan: Xnocac, December, 1916, G. F. Gaumer 23509
(Herb. Field Mus. No. 460,300, type). Buena Vista Xbac, Gaumer
1077. San Anselmo, Gaumer 2165. Without definite locality, Gaumer
24117.
No other representative of the genus Chaetocalyx (as now
restricted) is known from Mexico, and only one, C. latisiliqua
(Desv.) Benth., from Central America. The Yucatan plant is
related to C. hebecarpa Benth., a South American species.
Hedysarum americanum (Michx.) Britton, f. albiflorum,
f. nov. Petala alba. Alaska: Davidson Glacier, July 4, 1929,
William S. Cooper & Frances E. Andrews 95 (Herb. Field Mus. No.
598,264, type).
In the usual form of the species the corolla is purple.
Dalbergia glabra (Mill.), comb. nov. Robinia glabra Mill.
Gard. Diet. ed. 8. Robinia No. 5. 1768. D. campechiana Benth.
Journ. Linn. Soc. 4: Suppl. 37. 1860.
This species has been collected recently in British Honduras:
Honey Camp, August, 1929, C. L. Lundell 305.
Machaerium Merrillii, sp. nov. Frutex scandens c. 15-
metralis, ramulis validis teretibus cinnamomeis, novellis pilis longis
stramineis divaricatis basi valde dilatatis hispidis, quoque albido-
pilosis atque plus minusve albido-tomentosis, ramis vetustipribus
basibus pilorum persistentibus asperis; stipulae persistentes spinosae
et induratae, crassae, acutae, plerumque 5-7 mm. longae, puberulae
et tomentellae; folia 7-11 cm. longa, breviter petiolata, petiolo ut
rhachis gracili, dense puberulo; foliola c. 45, brevissime petiolulata,
oblonga, 5-9 mm. longa, c. 3 mm. lata, retusa, basi oblique rotun-
data, supra viridia, enervia, glabra, subtus pallidiora, ad costam
elevatam minute puberula vel glabrata, aliter glabra, nervis laterali-
bus obsoletis; flores paniculati, paniculis angustis laxe multifloris
8-18 cm. longis inflorescentiam amplam terminalem efforman-
tibus, ramis hispidis et tomentellis, pedicellis 1-2 mm. longis validis,
bracteolis rotundatis concavis c. 3 mm. longis puberulis striatis;
calyx anguste campanulatus 5 mm. longus breviter lobatus, lobis
late rotundatis, sericeus; vexillum 8 mm. longum profunde emar-
ginatum, extus dense albido-sericeum, alis et carina glabris; legumen
immaturum 3.5 cm. longum, ala tenui apicem versus 1 cm. lata,
dense pilosa, parte seminifera dense stramineo-hispida. British
Honduras: In jungle, Stann Creek Railway, alt. 15 m., April 2,
1929, W. A. Schipp 113 (Herb. Field Mus. No. 593,114, type).
A woody vine, climbing high over tall forest trees, the trunk
about 10 cm. in diameter. Flowers pale pink.
16 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
In most characters this plant resembles M. setulosum Pittier,
of southern Mexico. In the latter, however, the leaflets are several
times as large, and the pubescence is different.
At the collector's request, this species is named for Dr. Elmer
D. Merrill.
Cicer arietinum L. This is a fairly well-known plant,
supplying, as it does, one of the chief foods of the Iberian Peninsula,
the garbanzo or chick-pea. In Mexico, likewise, it is a favorite
food, procurable in any village market, and planted in wide fields,
like beans or maize. It was inevitable that it should attract the
attention of one unfamiliar with the region, yet that is perhaps not
sufficient reason for describing this Old World plant as a new species,
and in a genus other than that to which it really belongs. To the
synonymy of Cicer arietinum must be added the following quite
superfluous name: Ononis crotalarioides Jones, Contr. West. Bot.
15: 138. 1929.
RUTACEAE
Zanthoxylum trichilipides, sp. noy. Ramuli inermes, validi
et crassissimi, grisei, ad apices dense foliati, pilulis griseis vel lutes-
centibus minute stellato-tomentosi; folia imparipinnata petiolata,
petiolo 3-5 cm. Ipngo, rhachi 7-11 cm. longa gracili stellatim griseo-
tomentulosa; foliola 9-13, oblonga vel lanceolato-oblonga, 3.5-8 cm.
longa, 1-2 cm. lata, acuminata vel longiacuminata, basi obliqua,
uno latere rotundata, alip acuta, subcoriacea, in sicco nigrescentia,
opaca, glandulis numerosis pellucido-punctata, supra lucida, sparse
minuteque stellato-pubescentia, subtus paullo pallidiora, primo
subdense stellato-pubescentia, cito glabrata, margine fere integro
subrevoluto; paniculae terminates 7-10 cm. longae multi-ramosae
sessiles foliis breviores, ramis stellato-pubescentibus; pedicelli
florum femineorum fere 2 mm. longi validi; calyx 1 mm. latus
persistens, sepalis 5 ovatis; petala 5 lineari-oblonga 2 mm. longa
obtusa extus stellato-pubescentia; ovarium 1 dense tomentosum
sessile, stigmate sessili; folliculus 1 oblique obovoideus 3 mm.
longus stellatq-pubescens, basi abrupte contractus, glandulis numero-
sissimis parvis elevatis conspersus. Yucatan: Without definite
locality, in 1917-21, G. F. Gaumer 24014 (Herb. Field Mus. No.
552,017, type), 24339, 24005.
The nearest relative of this Yucatan species is Z. microcarpum
Griseb., which has conspicuously crenate leaflets, obtuse to merely
acute at the apex, and few large glands on the follicles.
MALPIGHIACEAE
Byrsonima bucidaefolia, sp. nov. Ramuli grisei apice dense
foliati, novellis dense sericeis mox glabratis; petioli usque ad 5 mm.
STUDIES OF AMERICAN PLANTS 17
longi pilis rufis adpresso-pilosi; lamina obovata vel cuneato-obovata,
5-8 cm. longa, 2.5-3.5 cm. lata, apice late rotundata, saepe emar-
ginata, basi cuneata vel late cuneata, tenuis, supra yiridis, glabra,
vel pilis paucis laxis deciduis induta, subtus pallidipr, laxe pilis
albidis tomentosa, marginibus saepe revolutis; racemi pedunculati
foliis subaequales, multiflori, rhachi c. 5 cm. longa pilis lucidis
ferrugineo-tomentosa, pedicellis 4-8 mm. longis tomentosis; bracteae
ovatae obtusae 3 mm. longae extus tenuiter tomentosae, intus
glabrae, bracteolis rptundato-ovatis usque ad 2 mm. longis, prope
basin pedicelli insertis; sepala 3-3.5 mm. longa ovata obtusa superne
tenuiter tomentosa, glandulis 2 magnis basalibus sepalis duplo
breyioribus; petala longe unguiculata in sicco rubescentia, glabra,
lamina reniformi 5 mm. lata grosse dentata; antherae connectivum
vix loculis aequilongum; fructus globosus 8 mm. diam. glaber,
stylis persistentibus 3-4 mm. longis. Yucatan: Kancabtsonot,
May, 1917, G. F. Gaumer 23869 (Herb. Field Mus. No. 466,338,
type). Without definite locality, Gaumer 24012, 24391, 23966.
British Honduras: Honey Camp, September, 1929, C.L.Lundell 353.
A good many species of Byrsonima have been described or
reported from Mexico and Central America, but all or most of them
seem to me to be mere forms of the variable B. crassifolia (L.) DC.
This Yucatan plant, however, is so strikingly different, and so
uniform in its foliage characters, that it seems safe to regard it as
a distinct species.
POLYGALACEAE
Bredemeyera lucida (Benth.) Benn. The genus Bredemeyera
has not been known previously from North America, although well
represented in South America. The following collection seems to be
referable to B. lucida: British Honduras: Stann Creek Railway,
alt. 15 m., in jungle, April 4, 1929, W. A. Schipp 169. The plant is
reported to be a subscandent shrub 2.5 m. high, with stems 5 cm.
in diameter. The collector states that it is rare in the region.
DICHAPETALACEAE
Dichapetalum Donnell-Smithii Engler, Bot. Jahrb. Engler
23: 144. 1896.
This species has been known from Guatemala and Salvador, and
it may now be reported for a third country of Central America:
British Honduras: Middlesex, alt. 60 m., on river bank, a vine 9 m.
long, the stem 5 cm. in diameter, the flowers cream-colored,
September, 1929, W. A. Schipp 378. Same locality, in jungle, a
shrub of 2 m., in fruit, September, 1929, Schipp S.26.
18 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
EUPHORBIACEAE
Acalypha chlorocardia, sp. nov. Frutex metralis, trunco
2.5 cm. diam., ramulis novellis crassis subteretibus viridibus sub-
dense pilis longis albidis patentibus hirsutis, internodiis brevibus;
stipulae c. 1 cm. longae lineari-subulatae longe attenuatae dense
hirsutae secus margines glanduloso-denticulatae; folia crasse mem-
branacea longissime petiolata, petiolo gracili 12-16 cm. longo hirtello
et plus minusve hirsute subtereti; lamina ovata vel late ovata,
12-15 cm. longa, 7-9 cm. lata, longe et subabrupte sensimve acumi-
nata, acumine angusto longe attenuate, basi late rotundata et
cordata, sinu 5-10 mm. longo, arete adpressq-serrata, supra viridis,
undique subsparse hirsuta, subtus vix pallidior, undique subsparse
hispidula, basi 5-7-nervia; spicae terminales femineae 19 cm. longae
subdensae, e basi interdum breviter ramosae, bracteis numerosis,
inferioribus foliis conformibus breviter petiolulatis, usque ad 7 cm.
longis, longe angusteque acuminatis, superioribus sessilibus et
cordato-amplectentibus, c. 1 cm. longis, utroque latere c. 7-serratis,
acuminatis, adpresso-hispidulis, supremis 5 mm. tantum longis,
acutis, crenato-serratis; flores sessiles; ovarium dense hispidulum;
styli rami pectinatim multilacinuligeri. British Honduras: Middle-
sex, on river bank, alt. 60 m., September 16, 1929, W. A. Schipp
S.45 (Herb. Field Mus. No. 602,936, type).
Among the Central American species of Acalypha this plant is
conspicuous because of the very large, leaf-like pistillate bracts.
Croton Millspaughii, sp. nov. Frutex, ramulis gracilibus,
vetustioribus teretibus griseis rimosis et lenticellatis, novellis
olivaceis gjabris, internodiis brevibus; stipulae c. 4 mm. longae
fere ad basin in lacinias paucas filiformes apice glandulo-incrassatas
glabras dissectae, persistentes; folia longe petiolata alterna crasse
herbacea, petiolo gracili 8-12 mm. longo glabro subtereti; lamina
ovata vel oblongo-ovata, 1.7-3 cm. longa, 1-1.5 cm. lata, sensim
acuminata, basi obtusa vel rotundata, utrinque glabra vel subtus
hinc inde pilo stellate parvo onusta, integra vel subintegra, basi
trinervia, costa utroque latere venas c. 4 inconspicuas emittente,
subtus paullo pallidior, ciliata, ciliis subremotis 1-1.5 mm. longis
apice glanduloso-incrassatis; racemi terminales vel ex axillis
superioribus, 1-3 cm. longi, dense pauciflori, floribus 1-2 mm. longe
pedicellatis; sepala floris masculi ovali-ovata 1.5 mm. longa obtusa,
extus glabra vel hinc inde pilo minuto stellate induta; sepala floris
feminei oblonga 2 mm. longa obtusa, extus glabra, glanduloso-
ciliata; styli rami paucilacinulati, ramulis elongatis filiformibus.
Yucatan: Cozumel Island, February 21, 1899, C. F. Millspaugh
1593 (Herb. Field Mus. No. 61,593, type).
The vernacular name is "picosa." The plant has been reported
as C. ciliato-glandulosus Ort., which it closely resembles. That
common species of Mexico and northern Central America may be
distinguished at a glance by its dense covering of stellate pubescence.
STUDIES OF AMERICAN PLANTS 19
Pera barbellata, sp. nov. Arbor 9-metralis, trunco 15 cm.
diam., ramulis gracilibus teretibus, novellis dense stellato-lepidotis,
internodiis brevibus; folia alterna breviter petiolata, petiolo cras-
siusculo 5-7 mm. longo lepidoto supra sulcato; lamina subcoriacea,
oblongo-elliptica, 4-6.5 cm. longa, 2.5-3.5 cm. lata, abrupte acumi-
nata, acumine obtusissimo, basi acuta vel abrupte contracta et
decurrens, supra ad costam minute puberula, aliter glabra, lucida,
neryis prominulis, subtus concolor, sublucida, sparse stellato-
lepidota, in axillis dense breviterque barbata, costa gracili elevata,
nervis lateralibus utroque latere c. 13, angulo lato adscendentibus,
fere rectis, remote a margine arcuato-conjunctis, nervulis obscuris;
flores in axillis vel ad nodos defoliates fasciculati, pedicellis fruc-
tiferis 2-3 mm. longis dense stellato-puberulis; capsula (perfecta
non visa) 8-10 mm. longa, minutissime denseque stellato-puberula.
British Honduras: In jungle, Mullins River road, alt. 30 m.,
June 8, 1929, W. A. Schipp 201 (Herb. Field Mus. No. 598,227,
type).
In P. arborea Mutis, the only other species known from Central
America, the leaves are mostly rounded at the base, and they are
not barbate beneath.
HIPPOCRATEACEAE
Salacia belizensis, sp. nov. Frutex scandens 9 m. longus,
trunco 10 cm. diam., ramulis validis teretibus griseis minute lenticel-
latis; folia coriacea breviter petiolata glabra, petiolo crasso 4-7 mm.
longo supra sulcato; lamina oblonga vel lanceolato-oblpnga, 8-16.5
cm. longa, 3-6 cm. lata, acuminata vel longe acuminata, apice
obtuso, basi acuta vel obtusa, supra lucida, costa nervisque promin-
ulis, subtus plus minusve lucida, costa crassiuscula elevata, nervis
lateralibus utroque latere c. 8, elevatis, angulo lato adscenden-
tibus, gracilibus, curvis, irregularibus, juxta marginem conjunctis,
nervulis prominulis reticulatis, margine saepe revoluta; inflorescentiae
dense multiflorae cymoso-paniculatae paniculis usque ad 13 cm.
longis, ramis glabris crassiusculis dichotomis, floribus 1-1.5 mm.
longe pedicellatis, bracteis late ovatis 0.6-1 mm. longis acutis glabris;
sepala late ovata obtusa 0.6 mm. longa glabra; petala 5 ovalia 1.5
mm. longa apice rotundata minute erosa vel fere integra; fructus
globosus 2.5 cm. diam. lenticellatus, pedicello incrassato c. 1 cm.
longo. British Honduras: In jungle, Mullins River road, alt. 15
m., April 10, 1929, W. A. Schipp 128 (Herb. Field Mus. No. 593,117,
type).
"A large climbing shrub, plentiful in this locality. Flowers green."
Hippocratea yucatanensis, sp. nov. Frutex alte scandens,
ramulis teretibus griseis, novellis compressis sparse minuteque
puberulis; petioli validi 6-10 mm. longi, supra breviter sulcati,
minute puberuli; lamina elliptico-ovalis vel oblongo-elliptica, 5-9.5
cm. longa, 2.2-5 cm. lata, obtusa, basi obtusa vel acutiuscula, subcor-
iacea, concolor, brevissime remoteque crenato-serrata, supra glabra,
20 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
costa elevata, subtus interdum ad costam elevatam sparse puberula,
aliter glabra, nervis lateralibus utroque latere c. 6, gracillimis,
arcuato-adscendentibus, prope marginem irregulariter conjunctis;
cymae pauciflorae foliis duplo breviores, in axillis solitariae, pedun-
culo valido 1.2-2.5 cm. longo compresso minute puberulo; bracteae
usque ad 1.5 mm. longae ovatae; pedicelli interdum 4 mm. longi,
vulgo c. 1 mm. ; calyx c. 2 mm. latus, sepalis late rotundatis minute
ciliolatis; petala ovalia fere 4 mm. longa apice rotundata glabra;
discus magnus depressus; antherae 0.8 mm. latae; fructus ignotus.
Yucatan: Kancabtsonot, May, 1917, G. F. Gaumer 23859 (Herb.
Field Mus. No. 466,318, type). Izamal, Gtmraer 718. Chichankanab,
Gaumer 1371. Without definite locality, Gaumer 2366, 23991*.
Related, perhaps, to H. elliptica HBK., of western Mexico, in
which the petals are barbate within. The plant has been reported
from Yucatan as H. obcordata Lam.
CELASTRACEAE
Wimmeria obtusifolia, sp. nov. Ramuli teretes, novellis
obscure et minutissime puberulis; petioli graciles 4-5 mm. longi
minute puberuli; lamina elliptica vel oblongo-elliptica, prope medium
latissima, 3.5-4 cm. longa, 1.4-2 cm. lata, versus apicem obtusum
interdum emarginatum angustata, basi acuta, concolor, ut videtur
integra sed minutissime remoteque adpresso-serrulata, statu juyenili
minutissime et inconspicue ad nervos puberula, costa gracili utrinque
elevata, nervis lateralibus utroque latere c. 4, angulo acuto adscen-
dentibus, prope marginem irregulariter conjunctis, supra elevatis;
cymae in axillis solitariae, plerumque foliis duplo breviores, vulgo
2-4-florae, pedunculo gracili 8-12 mm. longo minute puberulo,
pedicellis gracilibus viridibus minute puberulis 5-6 mm. longis
patentibus; bracteae vix 1 mm. longae, bracteolis minutis prope
basin pedicelli insertis; calyx 2.5 mm. latus, sepalis late rotundatis
imbricatis viridescentibus; petala oblongo-ovalia, 3 mm. longa, apice
rotundata, glabra; fructus ignotus. Yucatan: Without definite
locality, in 1917-21, G. F. Gaumer 24259 (Herb. Field Mus. No.
552,264, type).
Closely related to W. confusa Hemsl., of northern and western
Mexico, in which the leaves are usually smaller, widest near the
apex, and conspicuously crenate.
SAPINDACEAE
Cupania auriculata, sp. nov. Arbor 9-metralis, trunco 10 cm.
diam., ramulis yalidis subteretibus lenticellatis minute puberulis
vel glabratis; folia 5-7 cm. longe petiolata, petiolo subtereti puberulo
vel minute sericeo; foliola c. 10 alterna, 3-9 mm. longe petiolulata,
petiqlulo supra sulcato, oblonga, 10-12 cm. longa, 4.5-5 cm. lata,
breviter acuminata vel saepe subrotundata et caudato-acuminata,
acumine c. 1 cm. longo, basi obtusa vel truncata, vulgo valde inae-
STUDIES OF AMERICAN PLANTS 21
qualia, uno latere interdum decurrentia, coriacea, undulata vel
sinuata vel fere Integra, basi latere superiore plerumque hastato-
lobata, lobo brevi rotundato-ovato acuto vel apiculatq, supra lucida,
glabra vel ad nervos minute puberula, costa nervisque elevatis,
subtus glabra vel ad nervis minute sparseque sericea, costa nervisque
valde elevatis, nervis lateralibus utroque latere c. 11, angulo lato
adscendentibus, subarcuatis, marginem attingentibus, nervulis pro-
minentibus arete reticulatis; paniculae terminales et ex axillis super-
ioribus nascentes, sessiles vel pedunculatae, foliis longiores, c. 30
cm. longae, multiramosae, dense multiflorae, angustae, ramis dense
minuteque cinerep-sericeis, floribus aggregatis brevissime pedicel-
latis vel subsessilibus; bracteae subulatae plerumque 3-5 mm.
longae; sepala oblonga vel ovalia 2-2.5 mm. longa obtusa dense
puberula; petala ochroleuca sepala vix aequantia glabra; stamina
petalis paullo longiora, pistillo 3-3.5 mm. longo. British Honduras:
Stann Creek Railway, in broken pine ridge jungle, alt. 15 m., July
20, 1929, W. A. Schipp 267 (Herb. Field Mus. No. 598,228, type).
"Flowers fragrant." The proposed species may be recognized
readily by the peculiar auricled leaflets.
Talisia diphylla, sp. nov. Arbor 12-metralis, ramulis subtere-
tibus griseis vel fusco-ferrugineis, glabris, dense foliatis, lenticellis
numerosis parvis pallidis conspersis, internodiis breyissimis; folia
plerumque bifoliolata, inferiora simplicia et foliolo similia; petioli
validi 2.5-6 mm. longi glabri; foliola oblonga vel oblanceolato-
oblonga, 5-8 cm. longa, 1.5-3 cm. lata, apice obtusa vel interdum
rotundata et breviter emarginata, versus basin sessilem obliquam
acute angustata, subcoriacea, glabra, integra, supra viridia et lucida,
subtus pallida et opaca, costa subtus prominente, venis lateralibus
utrinque prominulis, utroque latere c. 7, fere rectis, prope marginem
irregulariter conjunctis; paniculae terminales sparse ramosae, folia
aequantes vel paullo longiores, 5-6 cm. longae, ramis minute pube-
rulis, bracteis minutis, pedicellis 8-12 mm. longis puberulis; sepala
ovalia c. 3 mm. longa, in statu fructifero persistentia et reflexa,
utrinque minute tomentosa; fructus immaturus subglobosus 7 mm.
diam. plus minusve asymmetricus, primo sparse adpresso-pilosus,
mox glabratus, stylo persistente 1-1.5 mm. longo. Yucatan: In
forest, Kancabtsonot, February, 1917, G. F. Gaumer 23573 (Herb.
Field Mus. No. 465,952, type).
It is not quite certain that this tree belongs to the genus Talisia,
but it seems to agree better with that than with any other group of
the Sapindaceae represented in Mexico and Central America. The
only species known previously from Mexico, T. olivaeformis (HBK.)
Radlk., has four leaflets.
Serjania yucatanensis, sp. nov. Frutex alte scandens, ramulis
vetustioribus subteretibus griseis, novellis brunnescentibus 6-sul-
catis glabris, internodiis elongatis; corpus lignosum e centrali
22 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
subtereti et periphericis 3 parvis approximates semiteretibus com-
positum; petioli yalidi 3-5 cm. longi glabri; folia palmatim 3-folio-
lata, foliplis sessilibus, ovatis, elliptico-oblongis vel ellipticis, 5-14
cm. longis, 3-7 cm. latis, versus apicem obtusum vel acutiusculum
angustatis, basi acutis et abrupte in acuminationem longam petioli-
formem contractis, versus apicem breviter et remote grosseque
crenato-serratis vel saepius integris vel subintegris, subcoriaceis,
glabris, supra viridibus, subtus multo pallidioribus; paniculae in
axillis foliorum reductorum insertae, breviter vel longe pedunculatae,
multiflorae, subdensae, 5-9 cm. longae, ramis sparse minuteque
tomentulosis vel glabratis, pedicellis plerumque 2-3 mm. longis,
bracteis minutis et inconspicuis; sepala interiora 3-3.5 mm. longa,
concava, subdense tomentosa, exteriora breviora, rotundata, minus
dense tomentosa; petala sepalis interioribus subaequalia, glabra;
fructus (immaturus) glaber, dissepimentis latis, lateribus loculi
firme coalitis, loculis 5 mm. longis latisque, irregulariter grosseque
exsculptis, ala 13 mm. longa et 10 mm. lata. Yucatan: Chichan-
kanab, April, 1917, G. F. Gaumer 23676 (Herb. Field Mus. No. 466,093,
type). Kancabtsonot, Gaumer 23596, 23595. Chichankanab, Gaumer
23715. Without definite locality, Gaumer 24419; Dr. Johnson.
Cozumel Island, Millspaugh 1533, 1554.
In a genus so complex as Serjania, it is difficult to suggest rela-
tionships of species with reasonable accuracy, and any suggestion is
likely to be misleading. In the writer's key to the Mexican species
(Contr. U. S. Nat. Herb. 23: 692. 1923) this Yucatan plant runs at
once to S. heterocarpa Standl., a species to which it is not closely
related.
RHAMNACEAE
Colubrina guatemalensis, sp. nov. Ramuli graciles teretes
vel subangulati, novellis breviter sordidp-pilosis, internodiis brevi-
bus; folia alterna petiolata, petiolo gracili 7-13 mm. longo pilosulo
vel puberulo; lamina subcoriacea, oblongo-ovata, 4.5-7 cm. longa,
2-3.5 cm. lata, longe acuminata, basi obtusa vel subrotundata et
abrupte breviterque cuneato-decurrens, remote crenato-serrata,
serraturis adpressis obtusis, supra griseo-viridis, subsparse breviter-
que pilosula, nervis impressis, subtus pilis brunnescentibus mollibus
patentibus saepe crispulis satis dense tomentosa, trinervia, costa
nervisque prominentibus, costa utrinque nervos 3-4 laterales angulp
acuto adscendentes percurrentes emittente; flores in axillis fasciculati,
pedicellis gracilibus 5-7 mm. longjs puberulis; hypanthium statu
fructifero pilosulum, sepalis reflexis late triangularibus acutis 1.5
mm. longis; capsula globosa apice depressa glabra 5-6 mm. longa;
semina obovoidea 4 mm. longa lucida. Guatemala: San Martin,
Dept. Chimaltenango, alt. 1,800 m., November, 1928, Jesus Morales
R. 1230 (Herb. Field Mus. No. 599,616, type).
This Guatemalan species is clearly related to C. Ehrenbergii
Schlecht., but in that Mexican shrub the leaves are mostly obtuse
STUDIES OF AMERICAN PLANTS 23
or only acutish, and thicker and more conspicuously veined than in
C. guatemalensis, and there is an abundant reddish tomentum on
the leaves and young branches.
VITACEAE
Cissus gossypiifolia, sp. nov. Frutex scandens, ramulis graci-
libus subteretibus ferrugineis glabris, vetustioribus lenticellis magnis
elevatis dense conspersis; folia longe petiolata, petiolo 2.5-5 cm.
longo gracili glabro; laminae plus minusve dimorphae, glabrae,
lamina foliorum majorum 9-11 cm. longa et c. 8 cm. lata, basi
truncata vel breviter cordata, lateribus subparallelis et fere rectis,
remote adpresso-serrulatis vel fere integris, supra medium breviter
triloba, lobis lateralibus triangularibus acuminatis 1-1.5 cm. longis,
lobo terminal! multo latiore abrupte sensimve acuminate, lamina
basi 5-nervia, lamina foliorum superiorum ovata vel elliptica, 5.5-8
cm. longa, remote et adpresse serrulata vel interdum breviter triloba,
acuta vel acuminata, basi obtusa vel rotundata, basi trinervia;
cymae laxe multiflorae c. 2 cm. longe pedunculatae, c. 3 cm. latae,
ramis pedicellisque glabris, pedicellis validis 2-3 (in fructu ad 5)
mm. longis; calyx latus c. 0.3 mm. altus truncatus; petala 4 oblonga
obtusa glabra 1.8 mm. longa; bacca obovoidea 6 mm. longa apice
rotundata et apiculata. British Honduras: Honey Camp, Orange
Walk, September, 1928, C. L. Landell 25 (Herb. Field Mus. No.
580,827, type), 26.
The larger leaves bear a striking resemblance to those of some
species of Gossypium, and the species may be recognized easily by
their distinctive form.
Cissus formosa, sp. nov. Frutex alte scandens, ramulis
vetustioribus fusco-ferrugineis lenticellis paucis elevatis onustis,
noyellis subteretibus viridibus glabris, internodiis 2-5 cm. longis;
petioli 1.5-5.5 cm. longi graciles glabri; laminae valde variabiles,
foliorum superiorum simplices, deltoideo-rotundatae, c. 7 cm. longae
et latae, abrupte breviacuminatae, basi truncatae, remote et irregu-
lariter serratae, serraturis paucis; laminae foliorum inferiorum vulgo
breviter vel profundius (vix ad medium) 3- vel rare 5-lobae, 7-14
cm. longae, 8-12 cm. latae, basi truncatae vel concavae, interdum
abrupte breviterque decurrentes, lobis acutis vel acuminatis vel
abrupte breviterque cuspidato-acuminatis, remote adpresso-serratis,
lamina subtenui, glabra, basi 3-neryia, nervis lateralibus 3 ramos
exteriores emittentibus; cymae ad axillas solitariae, intense purpureo-
rubrae, 1.5-3 cm. latae, densae, multiflorae, pedunculo 1.5 cm. longo
sparse puberulo, pedicellis vix 2 mm. longis; calyx 1 mm. longus
subtruncatus; petala 2 mm. longa extus sparse minuteque adpresso-
pilosa; bacca obscure purpureo-rubra. Yucatan: Suitun, July,
1916, G. F. Gaumer 23389 (Herb. Field Mus. No. 460,122, type).
Chichankanab, Gaumer 23713. Without definite locality, Gaumer
24312.
24 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
Dr. Qaumer states that the plant is very showy because of the
deep crimson inflorescences and fruits. Some of the other Mexican
and Central American species also are strikingly handsome when in
full flower. This Yucatan Cissus is related to C. microcarpa Vahl
and C. rhombifolia Vahl, both of which have trifoliolate leaves.
MALVACEAE
Abutilon Gaumeri, sp. nov. Frutex, ramulis vetustioribus
teretibus griseis vel fusco-ferrugineis glabratis, novellis dense pilis
breyibus patentibus brunnescentibus stellato-tomentosis; petioli
validi 1.2-3.5 cm. longi dense tomentosi; laminae inaequales et
variabiles, plerumque late cordato-ovatae, interdum orbiculari-
cordatae vel late rhombico-obovatae, 3-7 cm. longae, 2-5 cm. latae,
longiacuminatae vel acutae vel interdum obtusae, rare rotundatae,
basi plerumque leviter cordatae, interdum rotundatae, plerumque
integrae, utrinque (subtus densius) dense pilis patentibus fulvis
stellatis velutino-tomentosae, basi 7-neryia; flores in axillis solitarii
vel plerumque 2-3-fasciculati, pedicellis subgracilibus 2-2.8 cm.
longis ad medium vel paullo supra medium articulatis dense stellato-
tomentosis; calyx 7 mm. longus dense pilis fulvis stellato-tomentosus,
profunde 5-lobus, carpella fere aequans et eis adpressus, lobis late
ovatis vel rotundato-ovatis acutiusculis; carpella plerumque 8 biovu-
lata 7 mm. Ipnga, apice acuta vel acutiuscula, dorso et apice dense
pilis patentibus fulvis stellato-tomentosa. Yucatan: Without
definite locality, in 1917-21, G. F. Gaumer 24072 (Herb. Field Mus.
No. 552,076, type). Also No. 24046.
In the key to the species of Abutilon in the Trees and Shrubs
of Mexico this plant will run to A. sphaerostaminum Hochr., which
is a quite different plant with cordate sepals and much larger carpels.
Sida cordifolia L. To the synonymy of this common tropical
American weed may be added the following name: Sida ampla
Jones, Contr. West. Bot. 15: 146. 1929.
Pavonia integrifolia, sp. nov. Suffruticpsa?, caulibus dense
foliatis crassiusculis stellato-pubescentibus; stipulae filiformi-subu-
latae c. 1 cm. longae, adpresse stellato-puberulae, virides, persis-
tentes, erectae; folia petiolata crasse membranacea, petiolo gracili
2.5-4.5 cm. longo stellato-puberulo; lamina oblanceolato-oblonga,
13-17 cm. longa, 3.5-5 cm. lata, breviter acuminata, basin versus
Ipnge sensimque angustata, basi ipsa anguste rotundata, supra
viridis, glabra, nervis non elevatis, subtus pallidior, sparse minuteque
praesertim ad nervos stellato-hispidula vel fere glabra, integra vel
obsolete remoteque serrulata, pilis breyibus rigidis adpressis hispi-
dulo-ciliata, costa gracili eleyata, nervis lateralibus utroque latere
c. 10, angulo lato adscendentibus, arcuatis, remote a margine con-
junctis; inflorescentiae umbellato-cymosae foliis longiores, longe
STUDIES OF AMERICAN PLANTS 25
pedunculatae, pedunculo gracili usque ad 20 cm. longo, dichotomo,
floribus paucis longissime pedicellatis, pedicellis interdum 7.5 cm.
longis, minute stellato-pubescentibus; bracteae involucrales c. 10,
alte connatae, c. 8 mm. longae, lineares, attenuatae, virides, stellato-
puberulae; calyx bracteis aequilongus, lobis triangularibus acutis vel
acuminatis extus sparse minuteque stellato-puberulis; fructus 12
mm. latus depressus, carpellis 5 apice rotundatis glabris, obscure
venosis, dorso costatis, dorso et lateribus aristis 3 c. 5 mm. longis
spiniformibus retrorso-barbatis armatis. Mexico: Moist shady
forest, "rare," Zacuapam, Veracruz, April, 1927, C. A. Purpus
11118 (Herb. Field Mus. No. 588,336, type).
Among the related species with spine-armed carpels, this plant
is distinguished by its entire leaves.
STERCULIAGEAE
Ayenia fasciculata Millsp., sp. nov. A. ovata Millsp. Field
Mus. Bot. 1: 310. 1896, non Hemsl. 1878. Frutex gracilis c. 2 m.
altus, caule stricto rare ramoso tereti pubescente vel glabrato,
ramulis brevibus alternis 1-9 mm. longis; folia subfasciculata, petiolo
2-7 mm. longo pubescente; lamina oblonga, 1-3 cm. longa, 0.5-1.5
cm. lata, acuta, biserrata, primo sparse pubescens, serius glabrata;
stipulae erectae, spinulosae, rubro-brunneae, 3-4 mm. longae; flores
in cymas axillares 1-3-floras solitarias dispositi; petala 5 unguiculata,
lamina lata auriculata, auriculis truncatis, dorso eglandulosa; sepala
5 ovata 2-3 mm. longa acuta viridia reflexa, sub fructu persistentia;
antherae 3-loculares; gynophorum in anthesi 1-1.5 mm. longum, in
fructu 3-4 mm. longum; capsula echinata. Yucatan: Buena Vista
Xbac, August, 1896, G. F. Gaumer 1120 (Herb. Field Mus., type;
duplicates in herb. Mo. Bot. Card, and U. S. Nat. Herb.). Chichan-
kanab, Gaumer 2184 (Herb. Field Mus., herb. Mo. Bot. Card., U. S.
Nat. Herb.). Silam, Gaumer 666 (Herb. Field Mus., herb. Mo.
Bot. Gard., Gray Herb.). Near Piste, Seler 3980 (Herb. Field Mus.).
The foreshortening of the lateral branches bearing the inflo-
rescences and leaves gives them a fascicled appearance, but close
examination shows that the leaves are alternate. 1
DILLENIACEAE
Tetracera mollis, sp. nov. Ramuli teretes densissime stellato-
pubescentes, pilis longioribus patentibus intermixtis; folia coriacea
petiolata, petiolo crasso 1.5-2 cm. longo dense stellato-piloso et pilis
longioribus piloso; lamina late oblonga .vel elliptico-oblonga, 9-13.5
cm. longa, 4-7 cm. lata, apice rotundata et interdum apiculata,
basi obtusa vel rotundata, interdum abrupte breviterque decurrens,
versus apicem remote obscureque serrulata vel repanda, supra
scaberrima, costa nervisque impressis, subtus fere concolor, ubique
1 The description of this species is published here through the courtesy of Miss
Lawrence, of the Missouri Botanical Garden, who is monographing the genus
Ayenia. P. C. S.
26 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
densissime molliterque stellato-pilosula, ad nervos pilis longioribus
simplicibus pallidis patentibus mollibus pilosa, costa nervisque
elevatis, nervis lateralibus utroque latere c. 13, angulq lato adscen-
dentibus, arcuatis, gracilibus, percurrentibus; flores in paniculam
paucifloram c. 9 cm. longam dispositi, breyiter pedicellati et 3 mm.
longe stipitati, bracteis parvis foliaceis, ramis dense velutino-pilosulis;
sepala obovata, 7-9 mm. longa, obtusa, utrinque dense sericea; car-
pella 3 acuminata lucida 1 cm. longa, sparse adpresso-pilosa; semina
solitaria, basi arillo profunde laciniato cincta. British Honduras:
Honey Camp, Orange Walk, October, 1928, C. L. Lundell 47 (Herb.
Field Mus. No. 580,854, type).
In the other species of Tetracera known from Central America
the pubescence of the lower surface of the leaves is rough and harsh,
and quite unlike the soft velvety covering of T. mollis.
QUIINACEAE
Quiina Schippii, sp. nov. Arbor 6-7.5 m. alta, trunco 7.5-10
cm. diam., ramulis gracilibus teretibus, vetustioribus griseis plus
minusye rimosis et striatis, novellis pilis plerumque patentibus fulvis
hirtellis, internodiis elongatis; stipulae 7-15 mm. longae, lineares vel
lineari-subulatae, erectae, persistentes, attenuatae, virides, glabrae,
erectae; folia opposita vel ternata breviter petiolata, petiolo crasso
3-5 mm. longo fulvo-hirtello; lamina subcoriacea, oblongo-lanceolata,
8-20 cm. longa, 2-7 cm. lata, longe angusteque acuminata, acumine
apice obtuso, basin versus longe sensimque attenuata, utrinque
glabra vel tantum ad costam prope basin hirtella, supra viridis,
lucida, costa nervisque prominulis, subtus paullo pallidior, costa
gracili elevata, nervis lateralibus utroque latere c. 9, prominentibus,
valde adscendentibus, arcuatis, gracilibus, marginem fere attingenti-
bus, inter nervos creberrime pulchreque lineolata; racemi solitarii
vel fasciculati 1-4.5 cm. longi simplices, pauci- vel multiflori, bracteis
ovatis acutis ciliatis, rhachi dense hirtella, pedicellis 1.5-3 mm.
longis validis glabris; sepala 4 ovalia vel rotundata, 1.5-1.8 mm.
longa, apice rotundata, ciliata; petala 4 rotundata 2.5 mm. longa,
apice rotundata, glabra, alba, ciliolata; stamina petalis breviora,
filamentis gracilibus glabris, antheris globosis c. 0.5 mm. longis; bacca
oblonga glabra 8 mm. longa, apice obtusa vel subtruncata, stylis 2
persistentibus coronata. British Honduras: In jungle, Middlesex,
alt. 60 m., July 13, 1929, W. A. Schipp 238 (Herb. Field Mus. No.
598,219, type). Mullins River road, in jungle, alt. 30 m., June
20, 1929, Schipp 231.
The only other known Central American representative of this
family isQ. panamensis Standl., of Panama, in which the pubescence
is closely appressed, the petioles much longer, and the leaves abruptly
caudate-acuminate.
PASSIFLORACEAE
Passiflora yucatanensis Killip, sp. nov. Herba scandens 2.5-
4.5 m. longa, caulibus 4-5-angulatis striatis puberulis; stipulae
STUDIES OF AMERICAN PLANTS 27
falcato-subulatae, 2-3 mm. longae, 0.5 mm. latae; petioli 1-1.5 cm.
longi puberuli eglandulosi; lamina 4-5 cm. longa, 6-8 cm. lata, apice
biloba vel obscure triloba (lobis lateralibus rotundatis, lobo mediano
truncate vel acutiusculo), basi rotundata vel truncata, subtus pari-
bus 3-5 ocellorum onusta, membranacea vel subcoriacea, supra
glabra, subtus praesertim ad margines puberula; bracteae setaceae
2 mm. longae c. 5 mm. infra calycem insertae; flos 3-3.5 cm. latus;
sepala oblongo-lanceolata, 1.3-1.6 cm. longa, 0.4 cm. lata, obtusa;
petala oblongo-lanceolata, 8-9 mm. longa, 4 mm. lata, obtusa;
coronae filamenta biseriata, exterioribus 4-5 mm. longis erectis
3-angulatis, medio paullo dilatatis, interioribus capillaribus 2 mm.
longis; operculum membranaceum, arete plicatum, margine minute
fimbrillato incurvo; gynophorum gracile 1-1.2 cm. longum striatum
glabrum; antherae lineari-oblongae 4 mm. longae, 0.9 mm. latae;
ovarium anguste ovoideum dense albo-villosum; styli 5 mm. longi
clavati. Yucatan: Cozumel Island, in 1885, G. F. Gaumer 101
(Gray Herb., type; duplicate in herb. Kew.).
This collection has been reported as "Passiflora Andersonii
DC.?," a species of the islands of St. Lucia and Dominica,
related to P. rotundifolia and quite distinct from P. yucatanensis.
The foliage of this species suggests that of some of the forms of
P. biflora, but the Yucatan plant differs from that species by its
relatively shorter and erect outer corona filaments, its elongate
slender gynophore, and its longer peduncles.
BEGONIACEAE
Begonia Galderonii, sp. nov. Herba brevicaulis, caule ut
videtur adscendente vel prostrato, dense pilis gracillimis villoso;
stipulae ovatae subscariosae c. 1 cm. longae, longe subulato-acu-
minatae, ferragineae, sparse villosae vel glabratae; folia longissime
petiolata, petiolo gracillimo 10 cm. longo et ultra, sparse pilis longis
ferrugineis gracillimis villoso; lamina 1.5-2.5 supra basin peltata, late
ovata vel rotundato-ovata, 7-10 cm. longa et 5-6 cm. lata, subab-
rupte longiacuminata, basi late rotundata, interdum brevissime supra
medium triloba, remote obscureque repando-denticulata vel subinte-
gra, supra viridis, glabra, subtus ad nervos sparse longipilosa; cymae
folia aequantes vel eis longiores, dichotomae, c. 6 cm. longae, pauci-
florae, floribus fertilibus in statu fructifero c. 2 cm. longe pedicellatis,
pedicellis gracillimis glabris vel hinc inde longe villosis; capsula
lanceolato-oblonga 10-12 mm. longa, 5 mm. lata, superne attenuata,
angulo uno in alam 1.5 cm. longam tenuem obtusam venosam
sursum paullo curvatam producto. Salvador: Cerro de Apaneca,
in 1928, Salvador Calderdn 2416 (Herb. Field Mus. No. 580,408, type).
The available material is rather fragmentary, and in fruit only,
but it represents a well-marked species which I have been unable
to find described.
28 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
LYTHRACEAE
Heimia salicifolia (HBK.) Link. This member of the family
Lythraceae is of occasional occurrence over a large area of tropical
America. It receives another addition to its synonymy in a name
which was attributed to another family by its author: Ludwigia
tepicana Jones, Contr. West. Bot. 15: 131. 1929.
RHIZOPHORACEAE
Cassipourea podantha Standl. Field Mus. Bot. 4: 241. 1929.
The range of this species, which was described from Panama, is
extended widely by the following collections recently studied:
British Honduras: Honey Camp, September, 1929, C. L. iMndell
427. Middlesex, alt. 60 m., in jungle, a tree of 9 m., the trunk
12.5 cm. in diameter, September, 1929, W. A. Schipp 322.
MYRTACEAE
Eugenia yucatanensis, sp. nov. Frutex, ramulis vetustioribus
subteretibus griseis, novellis subcompressis dense albido-strigillosis,
internodiis 1.5-3.5 cm. longis; petioli validi 5-7 mm. longi supra
anguste sulcati minute strigillosi; lamina elliptica, 5.5-8 cm. longa,
2.5-3.5 cm. lata, abrupte acuminata, acumine lato 1 cm. longo apice
rotundato, basi rotundata vel obtusissima, subcoriacea, supra opaca,
glabra vel glabrata, costa impressa, concolor, subtus ad costam
elevatam minute strigillosa, aliter glabrata, nervis lateralibus utro-
que latere c. 10, gracillimis, inconspicuis, angulo lato divergentibus,
fere rectis, in nervum collectivum 2 mm. a margine distantem con-
junctis, margine subrevoluto, lamina opaca sed dense glanduloso-
puncticulata; flores in racemos breves solitaries axillares sessiles vel
breviter pedunculatos 2-2.5 cm. longos c. 8-floros dispositi; bracteae
ovato-triangulares c. 1 mm. Ipngae; pedicelli 3-5 mm. longi divaricati
dense albido-strigillosi; ovarium dense albido-strigillosum; sepala 4
rotundata 2.5 mm. longa puberula, in anthesi patentia; petala ovalia
vel suborbicularia 4 mm. longa apice rotundata dense glanduloso-
punctata glabra ciliata. Yucatan: Izamal, in 1888, G. F. Gaumer
(Herb. Field Mus. No. 181,609, type).
Related to E. Purpusii Standl., of Oaxaca, which differs in its
obtuse leaves and larger flowers.
Eugenia Gaumeri, sp. nov. Ramuli vetustiores validi teretes
ochracei, novellis dense albido-strigosis dense foliatis, internodiis
plerumque 1.2-2.5 cm. longis; petioli validi 2-3 mm. longi puberuli
vel glabrati; lamina oblonga, lanceolato-oblonga vel elliptico-oblonga,
medio vel infra medium latissima, 4-5.5 cm. longa, 1.3-1.8 cm. lata,
versus apicem obtusum angustata, apice supremo vulgo rotundato,
versus basin acutam cuneatim angustata, subcoriacea, supra intense
STUDIES OF AMERICAN PLANTS 29
viridis, primo praesertim ad costam sparse strigosa, cito glabrata,
sublucida, costa impressa, subtus pallidipr, primo albido-strigosa sed
mox glabrata, costa gracili elevata, nervis lateralibus utroque latere
c. 7, inconspicuis, gracillimis, angulo acuto adscendentibus, fere
rectis, prope marginem in nervum collectivum distinctum conjunctis,
marginibus subrevolutis, lamina glandulis parvis dense pellucido-
punctata; flores plerumque ad axillas 3-6-fasciculati, interdum
breviter racemosi, rhachi usque ad 3 mm. longa, pedicellis gracilibus
6-15 mm. longis dense albido-strigillosis; alabastra vix 3 mm. diam.;
ovarium dense albo-strigillosum; calycis lobi 4 ovales vel suborbi-
culares, 2 mm. longi, apice rotundati, glanduloso-punctati, strigillosi,
patentes vel post anthesin reflexi; petala rotundata sepalis fere
duplo longiora, dense glandulis parvis brunneis punctata, extus
sparse puberula. Yucatan: Kancabtsonot, May, 1917, G. F. Gaumer
23843 (Herb. Field Mus. No. 466,294, type). Without definite
locality, Gaumer 23984, 24073.
Related to E. avicenniae Standl., of Guerrero, which differs in its
elongate inflorescence.
Calyptranthes Karlingii, sp. nov. Ramuli acute tetragqni
crassiusculi glabri, internodiis 1.5-2 cm. longis; folia breviter petio-
lata, petiolo crasso 3-6 mm. longo supra sulcato; lamina crasse
coriacea, lanceolato-oblonga, 5-9 cm. longa, 2-3.5 cm. lata, sensim
acuminata, acumine obtuso, basin versus paullo angustata, basi
ipsa lata et late rotundata vel fere truncata, glabra, concolor,
utrinque densissime glanduloso-puncticulata, costa supra subim-
pressa, subtus elevata, crassiuscula, nervis lateralibus subtus obscuris,
numerosis, rectis, prope marginem nervum collectivum obscurum
effprmantibus, margine revoluto; inflorescentia cymoso-paniculata
axillaris dense multiflora, 2-3.5 cm. longa et lata, ramis paucis
divaricatis compressis crassis glabris vel sparsissime puberulis,
pedunculo acute tetragono c. 3.5 cm. longp, glabro, floribus dense
aggregatis sessilibus vel brevissime pedicellatis; calyx circum-
scisse dehiscens, parte persistente turbinato-campanulata 2-2.5
mm. longa basi acutiuscula sparse puberula vel fere glabra, calyce
in alabastro apice mucronato; petala rotundato-oboyata c. 2 mm.
longa apice rotundata glabra; stamina numerosissima 3-4 mm.
longa, filamentis filiformibus glabris. British Honduras: Tower
Hill Estate, in 1927, J. S. Karling 39 (Herb. Field Mus. No. 599,824,
type).
C. Millspaughii Urban, which also occurs in British Honduras,
differs in having oblong-elliptic leaves which are acute at the base,
and in its terete branchlets.
MELASTOMACEAE
Miconia Schippii, sp. nov. Frutex 2-metralis, trunco 2.5
cm. diam., ramulis gracilibus obtuse quadrangularibus viridibus,
novellis hince inple setuloso-hispidis, internodiis elongatis, inferiori-
bus glabris; folia petiolata crasse membranacea, petiolo gracili
30 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
1.5-3.5 cm. longo hispido; lamina lanceolato-oblonga, 11-17 cm.
longa, 4-6.5 cm. lata, longiacuminata, basi rotundata vel obtusa,
quinquenervia, nervis exterioribus multo gracilioribus, supra viridis,
undique sparse pilis longis rigidis lutescentibus hispida, subtus
paullo pallidior, tantum ad nervos pilis rigidis brevibus elongatisve
patentibus vel adpressis hispida, costa nervisque gracilibus promi-
nentibus, nervulis transversis prominulis; panicula 2.5 cm. longe
pedunculata anguste thyrsiformis, 7 cm. longa, 3 cm. lata, ramis
ferrugineo-hispidis adscendentibus brevibus, floribus aggregatis
sessilibus; hypanthium 1.5 mm. longum subglobosum glabrum;
calyx c. 0.7 mm. longus breviter lobatus, lobis latissime triangulari-
bus obtusiusculis apice pilis 3-4 brevibus onustis; petala alba late
oblonga 2.5-3 mm. longa glabra apice retusa erecta. British Hon-
duras: Big Creek, edge of forest, alt. 30 m., June 11, 1929, W. A.
Schipp 220 (Herb. Field Mus. No. 598,221, type).
"Occasional. Leaves flushed with dark red on the lower surface."
Miconia belizensis, sp. nov. Arbor 6-metralis, trunco 10
cm. diam., ramulis novellis crassiusculis ferrugineis densissime
minuteque adpresso-furfuraceis; folia petiolata, crasse membra-
nacea, petiolo gracili 2.5-4.5 cm. longo subtereti minute et
densissime ferrugineo-furfuraceo; lamina elliptico-oblonga vel ovato-
oblonga, 12-22 cm. longa, 4.5-10.5 cm. lata, versus apicem angustata
et abrupte longiacuminata, acumine angusto attenuate, basi obtusa
vel anguste rotundata et 5-nervia, arete repando-dentata, dentibus
1-1.5 mm. longis obtusis, supra viridis, glabra, nervis non elevatis,
subtus pallide brunnescens, ubique minutissime stellato-tomentella,
costa nervisque gracilibus elevatis, nervulis transversis crebris
prominulis rectis angulo lato divergentibus parallelis; panicula
terminalis 1.5 cm. longe pedunculata, c. 5 cm. longa, dense multi-
flora, ramulis crassis rigidis dense tomento ferrugineo adpresso
stellato-tqmentellis, floribus sessilibus vel brevissime crasseque
pedicellatis; bacca immatura subglobosa 6 mm. longa dense pilis
minutissimis stellatis granuloso-tomentella, basi late rotundata,
calyce persistente 1-1.5 mm. longo coronata, calycis dentibus
brevissimis late rotundatis. British Honduras: Middlesex, in
jungle, alt. 60 m., September 27, 1929, W. A. Schipp 395 (Herb.
Field Mus. No. 602,934, type).
The collector's notes state that the flowers are white, with
purple stamens, but no flowers are present on the specimen at
hand. Because of the absence of flowers it is impossible to determine
accurately the position of this species within the genus, but it differs
essentially from all the species of which I have examined material.
Maieta cuneata, sp. nov. Frutex 3-metralis, trunco 10 cm.
diam., ramis crassis teretibus viridibus vel olivaceis, dense pilis
rigidis divaricatis basi paullo incrassatis hispidis, internodiis
elongatis; folia opposita longiuscule petiolata, petiolo crasso 1-1.5
cm. longo dense hispido apice vesiculifero, vesiculo parvo c. 1 cm.
STUDIES OF AMERICAN PLANTS 31
longo pro maxima parte laminae basi circumdato, dense hispido;
lamina obovata, 8.5-14.5 cm. longa, 4-6.5 cm. lata, apice acuta et
abrupte caudata, cauda lineari 5-10 mm. longa, basin versus longe
cuneato-attenuata, firme membranacea, integra, utrinque pilis longis
rigidis patentibus densissime hispida, 5-plinervia; flores in axillis et
ad nodos defoliatos dense fasciculati, sessiles vel breviter pedicellati,
5-meri; calyx 2.5 mm. longus subglobosus dense hispidus, dentibus
brevissimis; petala alba lanceolato-ovata 2 mm. longa, versus apicem
obtusiusculum longe attenuata, glabra; antherae oblongae obtusae
fere 2 mm. Iqngae. British Honduras: Middlesex, in dense forest
along mountain stream, alt. 75 m., September 1, 1929, W. A. Schipp
320 (Herb. Field Mus. No. 603,048, type).
The collector states that the fruits are orange-colored, but none
are present on the specimens. The species is a well-marked one,
easily recognized by the shape of the leaves and by their abrupt
tail-like tips.
Henriettella macrocalyx, sp. nov. Arbor 7.5 m. alta, trunco
10 cm. diam., ramulis vetustioribus crassis brunnescentibus minute
rimosis, novellis obtuse tetragonis ferrugineis pilis arete adpressis
incrassatis dense strigosis, internodiis c. 2 cm. longis; folia breviter
petiolata, petiolo c. 1 cm. longo dense hispido-strigoso; lamina
coriacea, integra, oblongo-obovata, 10-15.5 cm. longa, 4.5-6.5 cm.
lata, apice acuta et abrupte breviterque cuspidato-acuminata,
acumine angusto 5-7 mm. longo attenuate, basin versus cuneato-
angustata, supra luteo-viridis, praesertim ad nervos hispidulo-
strigpsa, subtus pallida, ubique minute stellato-tomentosa, pilis
brevibus rigidis basi stellato-radiatis intermixtis, ad costam ner-
vosque hispidulo-strigosa, triplinervia, nervis subtus elevatis,
gracilibus, nervulis transversis numerosis prominentibus crebris
parallelis angulo fere recto abeuntibus, margine saepe revpluto;
flores pauci ad nodos defoliates fasciculati, pedicellis crassis 3-4
mm. longis dense ferrugineo-strigosis; calyx in anthesi 1 cm. longus
oblongo-campanulatus, extus densissime pilis brevibus incrassatis
arete adpressis strigosus, lobis 5 ovato-triangularibus 4-5 mm.
longis subulato-acuminatis. British Honduras: Stann Creek Rail-
way, in swampy jungle, near sea level, September 6, 1929, W. A.
Schipp 388 (Herb. Field Mus. No. 603,049, type).
The collector reports that the petals are white, but none are
present on the specimens I have examined. The species is note-
worthy in the genus for its very large flowers.
MYRSINACEAE
Parathesis Storkii, sp. nov. Arbor parya, ramulis crassius-
culis glabris, internodiis brevibus, vetustioribus subteretibus
ochraceis rimosis; folia petiolata rigide membranacea, elliptica
vel oblongo-elliptica, 5-8 cm. longa, 2-4 cm. lata, acuta vel breviter
acuminata, basi acuta, integra, glabra, supra viridia, densissime
32 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
punctis minutis fuscis conspersa, nervis prominulis, subtus paullo
pallidiora, nigro-puncticulata et plus minusve lineolata, costa
gracili elevata, nervis lateralibus utroque latere c. 10, angulo lato
divergentibus, gracillimis, prominulis, juxta marginem conjunctis,
nervulis paucis obscuris reticulatis, margine revoluto; inflorescentiae
axillares bipinnatim paniculatae, longe pedunculatae, laxe multi-
florae, c. 7 cm. longae et 8 cm. latae, pedunculo gracili c. 4 cm.
longo, floribus umbellatis, umbellis 2-7-floris, pedicellis gracilibus
3-8 mm. longis glabris, bracteis lanceolato-linearibus 1-1.5 mm.
longis; calyx 1.5-2 mm. longus, sepalis breviter connatis triangulari-
ovatis acutis minutissime puberulis; corolla in alabastro 5 mm.
longa, ovata, acuta vel acuminata, minute lepidoto-puberula,
petalis breviter connatis lanceolatis attenuatis intus villosulo-
puberulis; stamina petalis multo breviora, antheris lanceolato-
oblongis acuminatis 2 mm. longis dorso nigris, filamentis crassis
1-1.5 mm. longis; stylus gracilis c. 6 mm. longus, prope basin ut
ovarium breviter pilosulus; fructus ruber globosus 5-6 mm. latus,
densissime nigro-punctatus. Costa Rica: San Cristobal Road,
alt. 1,800 m., June 14, 1928, H. E. Stork 2560 (Herb. Field Mus.
No. 589,145, type).
Apparently a relative of the Guatemalan P. pleurobotryosa Donn.
Smith, in which the branches are densely ferruginous-villous.
OLEACEAE
Linociera panamensis, sp. nov. Arbor 12-15-metralis, trunco
30-38 cm. diam., omnino glabra, ramulis gracilibus griseis vel
ochraceis, lenticellis paucis pallidis elevatis conspersis, internodiis
brevibus; folia opposita petiolata subcoriacea, petiolo gracili 1-1.5
cm. longo supra late sulcato; lamina obovato-oblonga, elliptico-
oblonga vel oblanceolato-oblonga, 10-16.5 cm. longa, 4-5.5 cm.
lata, abrupte acuminata, acumine angusto obtuso, basi acuta vel
acuminata, interdum abrupte contracta et longe decurrens, supra
viridis, costa impressa, nervis npn elevatis, subtus fere concolor,
costa gracili elevata, nervis lateralibus utroque latere c. 10, gracilibus,
prominulis, angulo lato adscendentibus, irregularibus, prppe mar-
ginem conjunctis, nervulis obsoletis; inflorescentiae axillares et
terminates cymoso-paniculatae, foliis plerumque breviores, ramis
rigidis brevibus patentibus, pedicellis rectis rigidis 4-9 mm. longis,
bracteis linearibus vel subulatis 2-3 mm. longis; calyx persistens,
laciniis 4 c. 1 mm. longis triangularibus obtusis patentibus; drupa
alba compressa oblongo-elliptica 2 cm. longa, 1 cm. lata, acuta,
basi acutiuscula, utrinque costata. Panama: Flat Rock, region
of Almirante, Province of Bocas del Toro, in 1928, G. P. Cooper 553;
Yale No. 12186 (Herb. Field Mus. No. 579,733, type).
"A tree with fluted trunk and no buttresses. Said to become
very large. The burning wood is reported to have the odor of roses,
and the flowers are stated to have the same odor."
STUDIES OF AMERICAN PLANTS 33
The only other Linociera known from Central America is L.
oblanceolata Robinson, of British Honduras, which has narrow leaves,
pubescent branchlets, and terete fruit. That species, known here-
tofore only from the type, has been collected recently in British
Honduras: Crique Negra, March 27, 1929, N. S. Stevenson 106
(Yale No. 14890). It is reported to be a small tree, and the vernacu-
lar name is given as "wild cocoplum."
EBENACEAE
Diospyros cuneata, sp. nov. Ramuli teretes, grisei vel
brunnescentes, rimosi, novellis sparse strigillosis mox glabratis,
dense foliatis; petioli 2-3 mm. longi strigillosi vel glabrati; lamina
plerumque cuneato-obovata vel anguste obovata, 4-8.5 cm. longa,
1.5^3.5 cm. lata, apice obtusa vel rotundata, basin acutam versus
cuneatim angustata, supra viridis, lucida, ad costam minute puberula
vel glabrata, subtus paullo pallidior, statu juvenili sparsissime
strigillosa sed cito glabrata, venis utrinque prominulis, nervis
lateralibus utroque latere c. 5, gracilibus, angulo acutissimo adscen-
dentibus, nervulis laxe et irregulariter reticulatis, margine plerumque
plus minusve revoluto; flores masculi in cymas axillares plerumque
3-4-floras 2-4 mm. longe pedunculatas dispositi, pedicellis validis
usque ad 2 mm. longis dense strigillosis; calyx campanulatus 3.5
mm. longus dense sericeo-strigillosus breviter 4-lobus, lobis late
triangularibus vel rotundatis tubo plus quam duplo brevioribus;
corolla hypqcrateriformis extus dense sericea 6-7 mm. longa, lobis
4 tubo brevioribus; antherae 2.5 mm. longae; calyx fructifer 13-15
mm. latus 4-6-lobus, lobis apice late rotundatis, extus sparse strigil-
losis, intus dense sericeis; bacca (tantum imperfecta visa) glabra.
Yucatan: Without definite locality, in 1917-21, G. F. Gaumer 24098
(Herb. Field Mus. No. 552,101, type). Izamal, Gaumer 700.
Without definite locality, Gaumer 24211, 23955.
This clearly marked species is not closely related to any of the
other Mexican species of Diospyros.
APOCYNACEAE
Plumeria multiflora, sp. nov. Ramuli teretes c. 13 mm.
crassi prope apices dense foliati, inferne cicatricibus magnis foliorum
delapsorum conspersi, glabri; petioli graciles 2 mm. crassi minute
puberuli vel glabrati, 2-2.5 cm. longi; lamina anguste oblongo-
cuneata, 6-9.5 cm. longa, 2-3 cm. lata, apice late rotundata et
apiculata, versus petiolum sensim longiattenuata, rigide coriacea,
supra obscure viridis et lucida, glabra, costa profunde impressa,
subtus pallidior, dense pilis brevibus intertextis tomentosa, costa
crassa glabra, nervis lateralibus utroque latere c. 18, arcuato-
divaricatis, nervulis arete reticulatis, marginibus revolutis; inflores-
centia prope apicem rami lateralis, glabra, dense multiflora, cymis
34 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
numerosis in umbellam terminalem dispositis, pedunculo valido
9-13 cm. longo; bracteae vix 1 mm. excedentes sed multo latiores,
deciduae; pedicelli 5-9 mm. longi; calyx 1.5 mm. longus, lobis
rotundatis apiculatis; corolla c. 4 cm. longa, fauce 4 mm. lata,
lobis angustis tubum aequantibus. Yucatan: Kancabtsonot, May,
1917, G. F. Gaumer 23880 (Herb. Field Mus. No. 466,358, type).
British Honduras: Honey Camp, Orange Walk, in 1928, C. L.
Landell LP10.
This is not closely related to any of the five Plumerias hitherto
reported from Mexico.
Tabernaemontana Schippii, sp. nov. Arbor 15-metralis,
trunco 20 cm. diam., omnino glabra, ramulis crassiusculis sub-
teretibus brunnescentibus, in sicco plus minusve striatis, internodiis
1.5-4 cm. longis; folia opppsita subcoriacea breviter petiolata,
petiolo 5-15 mm. longo gracili supra late sulcato; lamina anguste
lanceolato-oblonga, 8-18 cm. longa, 2.5-5 cm. lata, longe acuminata,
acumine angusto obtuso, basin versus acute attenuate, supra
lucida, in sicco fusca, nervis subimpressis, subtus pallidior, costa
gracili elevata, nervis lateralibus utroque latere c. 13, angulo lato
adscendentibus, arcuatis, gracilibus, prominulis, juxta marginem
conjunctis, nervulis obsoletis, margine revoluto; inflorescentiae
cymoso-paniculatae terminales subdense multiflorae, sessiles vel
subsessiles, multo ramosae, ramis gracilibus, bracteis ovatis c. 1
mm. longis acutis persistentibus, pedicellis gracilibus plerumque
8-10 mm. longis; calyx profunde 5-lobus, laciniis ovatis 2 mm.
longis obtusis subpatentibus; corolla alba, tubo 8 mm. longo basi
ampliato, lobis late obovatis c. 7 mm. longis; antherae anguste
oblongae 2 mm. longae inclusae. British Honduras: In jungle,
Big Creek, alt. 15 m., April 20, 1929, W. A. Schipp 168 (Herb.
Field Mus. No. 593,107, type).
Called "cojoton." "Beautiful in blossom, the flowers sweet-
scented. Wood white and soft, full of latex."
The species is marked by the long and narrow, long-acuminate
leaves, which are very lustrous on the upper surface.
Aspidosperma Woronovii, sp. nov. Ramuli subteretes graciles
cinerei vel ochracei rimosi, lenticellis elevatis pallidis conspersi,
internodiis brevibus vel elongatis, novellis dense fulvo-puberulis;
folia alterna breviter petiolata, petiolo 3-5 mm. longo densissime
pilosulo; lamina oblonga vel elliptica, 4.5-6 cm. longa, 2-3.5 cm.
lata, apice rqtundata, basi obtusa vel rarius acutiuscula, subcori-
acea, supra viridis, lucida, primo fulvo-tpmentulosa, serius puberula
vel glabrata, costa nervisque prominulis, nervulis manifestis
prominulis reticulatis, subtus pallida, glauca, primo dense fulvo-
tomentosa, glabrescens, costa gracili elevata, nervis lateralibus
utroque latere c. 10, angulo acuto adscendentibus, prominulis, fere
rectis, juxta marginem arcuato-conjunctis; inflorescentiae solitariae
STUDIES OF AMERICAN PLANTS 35
oppositifpliae graciliter 3-15 mm. longe pedunculatae cymosae,
floribus in capitula pauca dense multiflora 5-7 mm. lata sessilia
vel breviter pedunculata dispositis, ramis dense fulvo-pilosulis,
bracteis minutis lanceolato-subulatis; calyx 2.5 mm. longus pube-
rulus, lobis 5 ovato-ellipticis tubo subaequalibus obtusis; corolla in
alabastro 3 mm. longa extus glabra, tubo intus sparse pilosulo,
lobis 5 ovatis obtusis tubo fere duplo brevioribus. Colombia:
Quebrada de Mambuca, Dept. Huila, August 29, 1926, G. Woronow
7075 (Leningrad herbarium, type).
Apparently the only other member of the genus described from
Colombia is A. ellipticum Rusby, which has practically glabrous
leaves on longer petioles.
Echites yucatanensis Millsp., sp. nov. Frutex gracilis
scandens omnino glaber, caulibus teretibus, internodiis elongatis;
glandulae numerosae parvae conicae interpetiolares ad basin
petioli insertae, petiolo 6-15 mm. longo; lamina valde variabilis,
vulgo late ovata, ovato-elliptica vel elliptico-oblonga, 6-10 cm.
longa, 2.5-5 cm. lata, sensim vel subabrupte acuminata vel
longiacuminata, basi rotundata et abrupte decurrens, interdum
panduriformis, infra medium breviter vel profunde constricta vel
breviter triloba, lobis basalibus late rotundatis vel rare acutis,
supra lucida, subtus opaca et plus minusve pallidipr, venis utrinque
prominenti-reticulatis; flpres cymosi, cymis axillaribus umbelli-
formibus, densis, c. 6-floris, pedunculo valido c. 2 cm. longo, pedi-
cellis validis 5-9 mm. longis; bracteae lineari-subulatae 1.5-2.5
mm. longae; calycis lobi 3.5-4 mm. longi lanceolati longiattenuati,
plerumque obscure ciliolati vel denticulati; corolla 5-5.5 cm. longa,
tubo gracillimo (2 mm. crasso) 1.5 cm. longo, parte superiore
abrupte dilatata (6 mm. crassa) et 1.5 cm. longa, supra sensim
contracta et 2.5 mm. lata, postea in faucem brevem infundibuli-
formem expansa, limbo 3.5-4 cm. latp; antherae 8 mm. longae
versus apicem longiattenuatae; folliculi 19-21 cm. longi, 4 mm.
crassi. Yucatan: Chichankanab, G. F. Gaumer 1979 (Herb. Field
Mus. No. 58,777, type). Tical, Gaumer 23816. Without definite
locality, Gaumer 1979, 24039.
The nearest relative of this plant is E. umbellata Jacq., in which
the leaves are usually rounded at the apex, dull, and not conspicu-
ously reticulate, nor are they ever panduriform, so far as the ample
herbarium material shows.
Echites pinguifolia, sp. nov. Frutex scandens, caulibus
gracilibus teretibus, vetustipribus brunnescentibus, npvellis sparse
puberulis vel hispidulis, internodiis elongatis; folia petiolata,
petiolo 10-15 mm. longo gracili sparse puberulo; lamina crasse
membranacea, ovata vel ovato-elliptica, 5-8 cm. longa, 2.5-4.5
cm. lata, abrupte cuspidato-acuminata, acumine 5-10 mm. longo
angusto attenuate acuto, basi late rotundata et interdum abrupte
36 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
breviterque decurrens, Integra, supra asperula, sparse puberula,
costa prominula, subtus paullo pallidior, mollis, ubique dense
minuteque velutino-pilosula, costa gracili elevata, nervis lateralibus
utroque latere c. 6, angulo acuto adscendentibus, inaequalibus,
remote a margine arcuato-conjunctis; racemi axillares crasse 1.5-2
cm. longe pedunculati, dense multiflori, rhachi crassa minute
pilosula, bracteis brevibus subulatis deciduis, pedicellis plerumque
6-8 mm. longis crassiusculis sparse puberulis vel fere glabris; calyx
extus glaber 3-3.5 mm. longus profunde 5-fidus, laciniis lanceolato-
attenuatis erectis; corolla extus glabra, tubo gracillimo 18 mm.
longo 1.5 mm. crasso, fauce obconica 1.5 cm. longa ore 12 mm.
lata, lobis latis obtusis c. 1 cm. longis, corolla in alabastro
acutiuscula. Yucatan: Without locality, G. F. Gaumer 815 (Herb.
Field Mus. No. 36,618, type).
The type specimen has been determined as E. pandurata A.
DC., a Mexican species, which is described as having obtuse calyx
lobes. E. pinguifolia is similar in general appearance to E. umbellata
Jacq., but that is a glabrous plant with very thick leaves.
Echites cuspidifera Blake, Contr. Gray Herb. 52: 79. 1917.
The type was collected at Manatee Lagoon, British Honduras,
M. E. Peck 35. Another collection may now be reported from the
same country: Six mile pine ridge, in open forest, a vine 3 m. long,
the stem 2.5 cm. thick, the corollas yellow, September, 1929, W. A.
Schipp 368.
Mandevilla denticulata Blake, Contr. Gray Herb. 52: 81. 1917.
Type from New Haven, British Honduras, M. E. Peck 696.
Another collection is now at hand: British Honduras: Middlesex,
in secondary forest, alt. 60 m., a vine 6 m. long, the stem 3.5 cm.
thick, the large flowers yellow, with reddish brown tube, September,
1929, W. A. Schipp S.6.
Forsteronia viridescens Blake, Contr. Gray Herb. 52: 80.
1917.
The type is M. E. Peck 450 from Manatee Lagoon, British
Honduras. The following collection is conspecific: British Honduras:
Middlesex, in jungle, alt. 60 m., September, 1929, a vine 4.5 m. long,
the stem 5 cm. thick, the small flowers white, W. A. Schipp 360.
ASCLEPIADACEAE
Vincetoxicum crassifolium, sp. nov. Vqlubilis, caulibus
validis subcompressis ad margines dense pilis rigidis patentibus
lutescentibus 1 mm. longis pilosis, ad latera dense puberulis et
STUDIES OF AMERICAN PLANTS 37
recurvo-hispidulis; petioli valid! 6-14 mm. longi ut caules pubes-
centes; lamina ovato-ovalis, 4-6.5 cm. longa, 2.3-4 cm. lata, apice
acutiuscula vel abrupte acuta, basi rotundata et subcordata vel
breviter cordata, sinu vix 3 mm. longo fere clause, coriacea, opaca,
supra minute et subdense velutino-hirtella, subtus pilis brevibus
fulyis dense velutino-pilosa; cymae axillares pauciflorae, pedunculo
valido 3-6 mm. longo, pedicellis usque ad 11 mm. longis dense
minuteque glanduloso-pilosis; calycis lobi lanceolato-ovati 3.5 mm.
longi, acuminati vel acutiusculi, minute pubescentes et ciliolati;
corolla viridescens 1 cm. longa, 1.5 cm. lata, extus dense puberula,
intus glabra, conspicue reticulato-venosa, lobis rotundato-oyalibus
tubo longioribus, apice late rotundatis; corona annuliformis
brevissima, corollae adnata, in appendices 5 remotas carnosas
anguste triangulares acutiusculas fere 2 mm. longas protracta.
Yucatan: Chichankanab, April, 1917, G. F. Gaumer 23704 (Herb.
Field Mus. No. 466,127, type). Kancabtsonot, Gaumer 23884.
Vincetoxicum Schippii, sp. nov. Suffrutex(?) scandens,
caulibus gracillimis puberulis vel scaberulis, internodiis elongatis;
folia longe petiolata, membranacea, petiolo gracili c. 4.5 cm. longo
fere glabro; lamina ovato-oblonga vel oblonga, 11.5-12.5 cm. longa,
5-5.5 cm. lata, acuminata, acumine obtusiusculo, basi profunde
cordata, sinu fere 2 cm. longo rotundatp, lobis basalibus late rotun-
datis, supra glabra, nervis prominulis, subtus paullo pallidior,
sparse scaberula vel fere glabra, costa gracili elevata, nervis
lateralibus utroque latere 5-6, prominentibus, remote a margine
conjunctis; flores graciliter pedicellati, pedicellis c. 2.5 cm. longis
sparse puberulis; sepala ovata 12-13 mm. longa, basi 6-8 mm.
lata, versus apicem obtusiusculum sensim angustata, pallide viridia,
glabra; corolla extus glabra viridis c. 3.5 cm. lata fere ad basin
5-loba, lobis oblongis c. 2 cm. longis anguste sensimque acumi-
natis, 4 mm. latis, intus glabris; corona 5 mm. lata, breviter
annularis, minute multicrenulata, minute ciliolata. British Hon-
duras: Middlesex, in open places, alt. 60 m., September 15, 1929,
W. A. Schipp S.I 9 (Herb. Field Mus. No. 602,928, type).
The material upon which this description is based is very frag-
mentary, but the plant can not be referred satisfactorily to any
of the species reported heretofore from Central America.
Dictyanthus yucatanensis, sp. nov. Volubilis, caulibus graci-
libus, vetustiqribus ochraceis, novellis satis dense hirsutis, inter-
nodiis elongatis; folia membranacea longe petiolata, petiolo gracil-
limo 2-4.5 cm. longo breviter hirsute; lamina late ovato-cordata,
3.5-7.5 cm. longa, 2.5-4.5 cm. lata, acuta vel acuminata, basi pro-
funde cordata, sinu lato aperto 5-15 mm. longo rotundato, lobis
basalibus rotundatis et paullo incurvis, supra viridis, sparse brevi-
terque pilosa, subtus pallidior, praesertim ad nervos breviter pilosa;
cymae umbelliformes pauciflorae 2-3 mm. tantum longe peduncu-
latae, pedicellis crassiusculis plerumque 3-4 mm. longis pilosulis
38 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
vel glabratis; sepala oblongo-lanceolata 6 mm. longa 2 mm. lata,
pallida, acuminata, sparse minuteque pilosula vel glabrata, venu-
losa; corolla late campanulata c. 22 mm. lata et 12 mm. longa, extus
sparse et minute pilosula, intus ubique arete nigro-reticulata et
glabra, lobis late triangularibus acuminatis; coronae squamae 4
mm. longae, anguste oblongae, apice dilatatae et rotundatae.
Yucatan: Without locality, G. F. Gaumer 933 (Herb. Field Mus.
No. 37,281, type). Progreso, Gaumer 1173. Buena Vista Xbac,
Gaumer 1173. Chichankanab, Gaumer 1544-
The vernacular name is reported as "xbockin" and "boochin."
The material has been referred to D. ceratopetalus Donn. Smith, a
plant with much larger corollas. The flowers of D. yucatanensis
are much like those of D. parviflorus Hemsl., but the latter is a low
plant with short petioles and with much denser pubescence.
Dictyanthus brachistanthus, sp. nov. Volubilis, ut videtur
herbacea, caulibus gracilibus sparse puberulis viridibus, internodiis
elongatis; folia longe petiolata, petiolo plerumque 2-2.5 cm. longo
minute puberulo et sparse hirtello vel glabrato; lamina membran-
acea, ovata vel deltoideo-ovata, 3.5-8 cm. longa, 2-4 cm. lata,
subabrupte acuminata, acumine attenuate acuto angusto, basi
rotundata vel truncata, rarius subcordata, supra viridis, pilis brevi-
bus patentibus pallidis pilosula et plus minusve scaberula, subtus
pallida, dense hispidula et glanduloso-puberula; cymae umbelli-
formes dense pauciflorae 0.7-3 cm. longe pedunculatae, pedunculo
minute puberulo, pedicellis yalidiusculis plerumque 3-7 mm. longis
minute puberulis et hispidulis; sepala anguste lanceolata 6-7 mm.
longa attenuata erecta minute puberula; corolla latissime campanu-
lata, glabra, c. 12 mm. lata et 6 mm. longa, intus ubique minute
venulis nigrescentibus reticulato-venulosa, lobis late triangularibus
acuminatis; coronae squamae anguste obovatae 2 mm. longae apice
rotundatae. Guatemala: Atitlan, Dept. Solola, alt. 600 m.,
February, 1894, Heyde & Lux 6346 (Herb. Field Mus. No. 76,787,
type).
The type collection was distributed as D. parviflorus Hemsl., but
it represents a plant quite unlike that Mexican species. D. brachis-
tanthus is related to D. yucatanensis, but in that the leaves are
deeply cordate at the base, the stems are hirsute, and the appendages
of the corona much more developed.
CONVOLVULACEAE
Maripa nicaraguensis Hemsl. Biol. Centr. Amer. Bot. 2: 382.
1882.
Although this species is rather common along some parts of
the Atlantic coast of Central America, the following collection
shows that its range extends much farther northward than had been
STUDIES OF AMERICAN PLANTS 39
known previously: British Honduras: Middlesex, in jungle, alt.
60 m., August, 1929, W. A. Schipp S.I If.. The specimens are in fruit
only.
Ipomoea Mitchellae, sp. nov. Herba alte scandens, caulibus
sparse pilis longis patentibus saepe deciduis hirsutis; folia longe
petiolata membranacea, lamina ovata vel late ovata, 5.5-9.5 cm.
longa, 3-7 cm. lata, Integra, longe et interdum abrupte acuminata,
basi profunde cordata, sinu lato 1-1.5 cm. longo, lobis basalibus
late rotundatis, supra viridi, subtus paullo pallidiore et plus minusve
albido-puncticulata, petiolis plerumque sparse hirsutis; floras cymosi,
cymis 2.5-4.5 cm. longe pedunculatis, pedunculis glabris pauci-
floris, pedicellis plerumque 6-10 mm. longis glabris, bracteis foliaceis
linearibus vel lanceolatis, 0.6-2 cm. longis, attenuatis, glabris; sepala
foliacea lanceolato-oblonga 12-20 mm. longa attenuato-acuminata
et apice filiformi-producta, supra glabra, prope basin dense hirsuta;
corolla infundibuliformis purpurea glabra, 7 cm. longa, tubo crasso
fauce 1.5 cm. lato; capsula (immatura?) ovoidea obtusa 9 mm. longa
glabra 3-locularis, seminibus dense pubescentibus 5 mm. longis.
Honduras: Wet thicket, La Fragua, Dept. Atlantida, alt. 20 m.,
December 7, 1927, Paul C. Standley 52658 (Herb. Field Mus. No.
582,849, type). Near Progreso, Dept. Yoro, wet thicket, Standley
54994- Quebrada Seca, Dept. Yoro, wet thicket, Standley 53894.
Near Tela, Dept. Atlantida, Elizabeth R. Mitchell 54; in banana
plantation, Mitchell 134-
It is with considerable reluctance that I propose a new species
in this already complicated group of the genus Ipomoea, whose
members are so imperfectly known and so badly in need of critical
revision. The present plant, however, I have been quite unable to
refer satisfactorily to any of the described species. It is related
evidently to I. purpurea (L.) Lam., which usually has pubescent
leaves and glabrous seeds. It differs from I. Meyeri (Spreng.) Don
in its shorter sepals and larger corolla.
VERBENACEAE
Citharexylum teclense, sp. nov. Arbor, ramulis acute tetra-
gonis, vetustioribus ochraceis vel brunnescentibus, junioribus dense
puberulis, internodiis brevibus vel elongatis; folia opposita petiolata,
petiolo 4-8 mm. longo crassiusculp dense puberulo; lamina sub-
coriacea, elliptica vel obovato-elliptica vel rarius rotundato-obovata,
8-12.5 cm. longa, 3.5-6.5 cm. lata, abrupte acuta vel interdum tantum
acutiuscula, basi cuneato-acuta vel longe angustata, supra viridis,
scabra, nervis subimpressis, subtus undique pilis minutis rigidius-
culis patentibus albidis molliter hirtella, costa gracili elevata,
nervis lateralibus utroque latere c. 7, gracilibus, prominentibus,
arcuatis, angulo acuto adscendentibus, prope marginem arcuato-
conjunctis, nervulis prominulis reticulatis; flores spicati, spicis
40 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
sessilibus vel breviter pedunculatis 3.5-11 cm. longis remote pauci-
floris, rhachi dense minuteque puberula, bracteis lineari-lanceolatis
1.5-2 mm. longis attenuatis minute puberulis; calyx campanulatus
5-6 mm. longus, 4 mm. latus, obsolete dentatus, dentibus latissime
rotundatis apiculatis, minutissime puberulus; corolla extus glabra,
tubo crasso 7-8 mm. longo, lobis oblongis 3-3.5 mm. longis crassis
apice rotundatis vel retusis; drupae subglobosae 12-14 mm. longae.
Salvador: Finca La Joya, near Santa Tecla, June 4, 1929, Salvador
Calderdn 2529 (Herb. Field Mus. No. 592,032, type). Puerta de la
Laguna, cultivated, June, 1928, Calderdn 2354.
Called "cafe* de arbol," presumably because the fruits suggest
those of coffee. The species is an isolated one, not closely similar
to any other with which I am familiar.
Citharexylum Pringlei Greenm. Proc. Amer. Acad. 41: 243.
1905. Ligustrum spicatum Jacques, Rev. Hort. 1863: 339. 1863.
C. spicatum Sprague, Kew Bull. 1924: 146. 1924, not Rusby, 1900.
Sprague published in 1924 (Kew Bull., 145) a detailed account
of the rather extensive synonymy of this Mexican species, and came
to the conclusion that its proper name was Citharexylum spicatum
(Jacques) Sprague. In making this new combination, however, he
overlooked the fact that a Citharexylum spicatum had been published
by Rusby in 1900 (Bull. Torrey Club 27: 81). I have not seen
material of Rusby's species, but at least until it has been proved to
be a synonym, the specific name spicatum can not be used for the
Mexican plant, and the latter should, therefore, be known as Citha-
rexylum Pringlei Greenm.
LABIATAE
Salvia comayaguana, sp. nov. Herba erecta 1-1.5 m. alta,
ramis densissime breviterque villosis obtuse quadrangularibus validis,
internodiis elongatis; folia opposita petiolata crasse membranacea,
petiolo 1-4 cm. longo dense breviterque villoso, foliorum supremorum
brevissimo; lamina ovata, late ovata vel elliptico-ovata, 6-17 cm.
longa, 3-8 cm. lata, acuta vel acuminata, basi obtusa vel rotundata
et plemmque abrupte breviterque decurrens, arete serrata vel
crenato-serrata, supra viridis, subdense adpresso-villosula vel
interdum fere scabra, ad nervos densius villosula, costa nervisque
prominulis, subtus pallidior, ubique dense atque molliter breviter-
que villoso-pilosa, pilis griseis, costa nervisque prominentibus, nervis
lateralibus utroque latere 4-6 arcuatis; flores verticillati, verticillis
plerumque 6-8-floris, inferioribus 1.5-3.5 cm. distantibus, in racemum
spicifonnem 10-19 cm. longum et 2 cm. latum terminalem erectum
dispositis, pedicellis 2-3 mm. longis pilosis, bracteis deciduis lanceo-
lato-ovatis 10-12 mm. longis longe subulato-acuminatis dense
albido-pilosis; calyx 9 mm. longus dense pilis rigidiusculis albidis
villosulo-pilosus, supra paullo dilatatus, laciniis tubo brevioribus
STUDIES OF AMERICAN PLANTS 41
anguste triangularibus longe subulato-acuminatis; corolla purpureo-
rubra 18 mm. longa, tubo extus glabro 1 cm. longo superne vix
dilatato cylindrico, labio superiore lato extus dense villosulo,
inferiore subaequali extus sparse villosulo; stamina non exserta.
Honduras: Moist thicket near Siguatepeque, Dept. Comayagua,
alt. 1,100 m., February, 1928, Paul C. Standley 55842 (Herb. Field
Mus. No. 581,412, type), 55916.
In the form of the inflorescence and calyx and in pubescence
this plant somewhat resembles S. Lindenii Benth., but the latter
has cordate leaves and a very different corolla.
Salvia Fernaldii, sp. nov. Herba ut videtur perennis, caulibus
erectis vel adscendentibus ramosis 20-50 cm. longis gracilibus
viridibus obtuse tetragonis glabratis vel plerumque minute puberulis
vel pilis sparsis longis albidis patentibus pilosis, internodiis elongatis;
folia opposita longe petiolata, petiolo plerumque 6-10 mm. longo
incuryo-puberulo vel glabrato; lamina membranacea, deltoidea vel
deltoideo-pvata, 1-2 cm. longa, 0.7-1.7 cm. lata, obtusa vel acutius-
cula, basi truncata, interdum abrupte breviterque decurrens,
crenata, dentibus utroque latere c. 7, utrinque sparse scaberula,
subtus paullo pallidior; flores verticillati, verticillis paucifloris
remotis racemos 2-15 cm. longos fere nudos efformantibus, bracteis
parvis lanceolatis pedicellis plerumque brevioribus, pedicellis
adscendentibus dense puberulis 2.5-3.5 mm. longis; calyx maturus
anguste campanulatus 5-6 mm. longus costatus, sparse puberulus
vel scaberulus, rarius glabratus, saepe pilis paucis longioribus
eglandulosis albidis patentibus indutus, lobis tubo brevioribus
subaequalibus ovatis acutis erectis minutissime ciliolatis; corolla
8-9 mm. longa extus sparse puberula, tubo calyci aequali fauce
paullo dilatato. Yucatan: Chichen Itza, February 27-28, 1899,
C.F. Millspaugh 1634 (Herb. Field Mus. No. 61, 634, type). Izamal,
in 1888, Gaumer. Pocoboch, Gaumer 1333. Kancabtsonot, Gaumer
23519. Buena Vista, Gaumer in 1899.
The specimens have been referred to S. micrantha Vahl and
S. serotina Sw., and the species is undoubtedly related to S. micrantha.
In that, however, the calyx is copiously glandular-pubescent,
while in this Yucatan plant there is no trace of gland-tipped hairs
about the inflorescence.
The species is named for Professor M. L. Fernald, as a mark
of appreciation of his excellent monograph of the Mexican species
of Salvia, which has proved invaluable to all students of the Mexican
flora.
Micromeria Brownei (Sw.) Benth. To the synonymy of this
widespread tropical weed must be added the following: Hedeoma
gradllima Jones, Contr. West. Bot. 15: 150. 1929.
42 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
SOLANACEAE
Physalis mayana, sp. nov. Suffrutex, ramis validis teretibus
et obscure angulatis ochraceis dense stellato-tomentosis; folia soli-
taria, petiolo 0.6-2 cm. longo supra et saepe fere ad basin alato,
e lamina non plane distincto; lamina late ovata vel rhombico-
ovata, 6-15 cm. longa, 3.5-9 cm. lata, acuta vel breviter acuminata,
versus basin abrupte angustata, longiattenuata et ad petiolum
decurrens, undulata vel irregulariter, grosse et obtuse sinuato-
dentata, saepe integra vel subintegra, tenuis, supra viridis, stellato-
puberula, subtus paullo pallidior, dense molliterque stellato-tomen-
tosa; flores in axillis fasciculati, pedicellis gracilibus in anthesi 7-13
mm. longis stellato-tomentosis; calyx campanulatus 6-7 mm. longus,
5-6 mm. latus, stellato-pubescens, lobis triangularibus tubo paullo
breyioribus; corolla campanulata 12 mm. longa et fere aequilata,
lobis pvato-triangularibus obtusis tubo subaequilongis, extus breviter
villosis; antherae 4 mm. longae, 1.5 mm. latae, obtusae, erectae,
glabrae, rimis lateralibus dehiscentes; calyx fructiferus accrescens
et inflatus, late ovoideus, 3 cm. longus et plus quam 2 cm. latus,
apice contractus et fere clausus, basi late rotundatus vel concavus,
tenuis, pilis plerumque stellatis minute pubescens; bacca sessilis
globosa glabra 1 cm. diam.; semina numerosa compressa 1.5 mm.
longa pallide brunnescentia grosse reticulata. Yucatan: Without
definite locality, in 1917-21, G. F. Gaumer 24381 (Herb. Field Mus.
No. 552,374, type). Chichankanab, Gaumer 1504. San Felipe,
Gaumer 1421. Without definite locality, Gaumer 1000.
This plant is related to P. melanocystis (Robinson) Bitter, but
that species differs in its small narrow leaves, simple pubescence,
and smaller fruiting calyces.
Solanuni Lundellii, sp. nov. Frutex inermis, ramulis gracilibus
teretibus densissime stellato-hispidulis, internodiis 1-3.5 cm. longis;
folia solitaria, breviter petiolata, petiolo gracili 4-6 mm. longo dense
stellato-hispidulo; lamina membranacea ovato-oblonga vel lanceo-
lato-oblonga, 5-11 cm. longa, 2-4.5 cm. lata, subabrupte longiacumi-
nata, acumine angusto attenuate acuto, basi obliqua, latere interfere
cuneato-acuta, exteriore rotundata, utrinque subdense stellato-pilp-
sula, pilis simplicibus intermixtis, integra, supra viridis, nervis vix
prominulis, subtus paullo pallidior, nervis lateralibus utroque latere
c. 6, angulo acuto adscendentibus, arcuatis, remote a margine
conjunctis; flores ad axillas fasciculati, numerosi, pedicellis gracilibus
5-15 mm. longis dense molliterque pilis ochraceis stellato-pilosis;
calyx fere ad basin 5-fidus, laciniis oblongis vel late oblongis 5-6
mm. longis apice obtusis vel rotundatis, extus dense stellato-pilo-
sulis; cetera ignota. British Honduras: Roaring Creek, August,
1929, C. L. Lundell 324 (Herb. Field Mus. No. 602,915, type).
A relative of S. extensum Bitter, a common species of the Canal
Zone, Panama.
STUDIES OF AMERICAN PLANTS 43
Solarium yucatanum, sp. nov. Frutex, ramulis teretibus sub-
dense pilis brevistipitatis paucirampsis ferrugineis indutis, aculeatis,
aculeis 7 mm. longis, basi compressis et 5-6 mm. latis, divaricatis vel
paullo decurvis, basi pilis paucis stipitatis stellatis indutis, aliter
glabris; folia solitaria vel saepe in axillis foliis 1-2 parvis comitata,
petiolis 4-10 mm. longis stellato-hispidulis saepe aculeo longo gracili
armatis; lamina oblonga vel elliptico-oblonga, 3-6.5 cm. longa,
1.5-3 cm. lata, versus apicem obtusum vel acutiusculum angustata,
basi valde inaequalis, utroque latere rotundata vel obtusa sed uno
latere 2-5 mm. infra alterum protracta, crassa, aspera, supra yiridis,
dense stellato-hispidula, subtus pallidior, stellato-tomentosa, pilorum
brevistipitatorum ramulis gracillimis longis intertextis, venis subtus
prominentibus, costa interdum aculeis 1-2 longis gracilibus rectis
armata, nervis lateralibus utroque latere 6-7 arcuatis, marginibus
integris; flores hermaphroditi, cymis lateralibus vulgo 2-3-floris,
pedunculis usque ad 3 mm. longis stellato-hispidulis inermibus;
calyx in anthesi 5-6 mm. longus (in fructu usque ad 15 mm.),
inermis vel prope basin aculeis 1-2 gracilibus munitus, fere ad basin
5-lobus, lobis lineari-oblongis vel anguste lanceqlato-oblongis,
apicem obtusum versus angustatis, utrinque stellato-hirtellis, paten-
tibus; corolla 7 mm. longa fere ad basin lobata, laciniis oblongo-
linearibus attenuatis extus sparse stellato-hispidulis; filamenta 2
mm. longa, antheris 4 mm. longis liberis basi cordatis glabris superne
angustatis, poris apicalibus; stylus antheris aequilongus; bacca
globosa glabra 8 mm. diam. Yucatan: Bocas de Silam, in 1917-21,
G. F. Gaumer 24S52 (Herb. Field Mus. No. 552,358, type). Chichan-
kanab, Gaumer 2000.
This is evidently a member of the group which includes 5.
laurifolium Mill, and S. diversifolium Schlecht., but it is well marked
by the small entire leaves.
GESNERIACEAE
Corythroloma Warscewiczii (Douche* & Hanst.), comb. nov.
Gesnera Warscewiczii Bouch4 & Hanst. Ind. Sem. Hort. Berol.
1861. App. 9. 1861; Linnaea 34: 273. 1865-66.
Columnea pilosissima, sp. nov. Frutex gracilis epiphyticus
sparse ramosus, ramis subteretibus ochraceis dense pilis longis
patentibus fulvis vel ochraceis pilosis, internodiis brevibus; folia
breviter petiolata tenuiter carnosa, petiolo 2-4 mm. longo gracili
piloso; lamina anguste oblonga vel lanceolato-oblonga, 2-3 cm.
longa, 6-8 mm. lata, apicem versus paullo angustata, obtusa, basi
acuta, integra, utrinque dense pilosa, supra enervia, costa subtus
prominula, venis obsoletis; flores solitarii sessiles vel subsessiles;
sepala sublibera lanceolata attenuata c. 9 mm. longa subaequalia
dense pilosa viridia; corolla laete coccinea extus subsparse pilis
longis multicellularibus pilosa, 5-6 cm. longa, tubo superne sensim
ampliato, fauce 8 mm. lato, limbo bilabiate, labio superiore fere 2
cm. longo concavo obtuso, inferiore 1 cm. longo, laciniis oblongis
44 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. VIII
attenuatis obtusis; stamina exserta labium superiorem aequantia,
antheris oblongis 2.5 mm. longis. Honduras: On tree in wet
forest on the hills high above Lancetilla Valley, Dept. Atlantida,
alt. 600 m., March 13, 1928, Paul C. Standley 56789 (Herb. Field
Mus. No. 581,792, type). Also Nos. 54176 and 55614 (both sterile)
from the same region.
The Columneas are among the very handsomest of all the plants
of Central America, but most of the species of the region are con-
fined to the mountains of Costa Rica and Panama. Only a few
extend to northern Central America and Mexico, and the present
plant seems to be an isolated species, somewhat noteworthy because
of its occurrence at such a low elevation.
ACANTHACEAE
Ruellia longipila, sp. nov. Herbacea, ramulis gracilibus sub-
teretibus pilis longis albis vel fulvescentibus mollibus patentibus
satis dense pilosis, internodiis brevibus vel elongatis; folia longe
petiplata membranacea, petiolo gracili 7-14 mm. longo longipiloso;
lamina lanceolato-oblonga, 4.5-9.5 cm. longa, 1.5-3.3 cm. lata, acuta
vel acuminata, basi acuta vel subobtusa, supra viridis, in sicco
fusca, pilis longis multicellularibus albis pilosa, subtus pilis similibus
densius pilosa, supra rhaphidibus brevibus minutis pallidis dense
conspersa, costa subtus prominente gracili, nervis lateralibus utro-
que latere c. 8; flores axillares solitarii, sessiles vel brevissime pedi-
cellati; calycis laciniae lineares 1.5 cm. longae virides albo-pilosae;
corolla purpurascens extus albido-puberula, tubo gracillimo 17 mm.
longo, 1.5 mm. crasso, fauce abrupte dilatata, tubo aequilonga, ore
8 mm. lata, lobis rotundatis inaequalibus, superioribus 8 mm. longis,
inferioribus paullo longioribus; antherae oblongo-lineares 3 mm.
longae; capsula oblonga glabra 12 mm. longa, abrupte breviterque
acuminata, basi non contracta. British Honduras: Stann Creek
District, common in high bush ground, in 1929, C. L. Stacker 20
(Herb. Field Mus. No. 597,929, type). Roaring Creek, August,
1929, C. L. Lundell 322.
Noteworthy for the dense and unusually long, white pubescence.
Jacobinia leucothamna, sp. nov. Frutex 2-metralis, ramis
crassiusculis teretibus ochraceis vel albidis, novellis dense pilis
pallidis adpresso-pilosis, internodiis brevibus vel elongatis; folia
breviter petiolata subcoriacea, petiolo crassiusculp 2-4 mm. longo
hirtello vel puberulo; lamina late elliptica vel rarius oblongo-ellip-
tica 2-4.5 cm. longa, 1.7-3.3 cm. lata, apice rotundata et apiculata
vel interdum obtusa, basi rotundata vel obtusa, interdum abrupte
breviterque contracta, supra viridis, sparse hinc inde pilis minutis
albidis pilosula vel glabrata, interdum scaberula, subtus ubique
dense velutino-pilosula, costa gracili eleyata, nervis lateralibus
utroque latere c. 7, angulo lato adscendentibus, prominulis, gracil-
limis, valde arcuatis, juxta marginem conjunctis; flores spicati,
STUDIES OF AMERICAN PLANTS 45
spicis ex axillis supremis ortis simplicibus vel furcatis, laxe pauci-
floris, breviter pedunculatis, 1-2 cm. longis, rhache pilosula, bracteis
subulatis hispidulis c. 1.5 mm. longis; sepala lanceolato-subulata
2.5 mm. longa attenuata erecta pilosula; corolla alba 8-9 mm.
Iqnga extus pilosa, tubo anguste infundibuliformi, superne paullo
dilatato, limbo bilabiate tubo breviore; antherae loculi oblongi 1
mm. longi inaequaliter inserti, basi obtusi. Yucatan: Silam, G. F.
Gaumer 1242 (Herb. Field Mus. No. 57,171, type), 2280.
Jacobinia ensiflora, sp. nov. Frutex metralis, trunco 2.5 cm.
diam., ramulis gracilibus subteretibus glabris, internodiis elongatis;
folia petiolata, petiolo gracili 1.8-3.5 cm. longo glabro; lamina mem-
branacea, anguste lanceolato-oblonga, 19-20 cm. longa, 5-5.5 cm.
lata, longe et abrupte sensimve acuminata, acumine angusto atten-
uate, basin versus longe angustata, integra vel obscure undulata,
glabra, supra viridis, sublucida, costa nervisque prominulis, subtus
paullo pallidior, costa gracili elevata, nervis lateralibus utroque
latere c. 7, gracillimis, angulo acutissimo adscendentibus, subarcuatis,
marginem fere attingentibus; inflorescentia terminalis longissime
graciliterque pedunculata, dense cymoso-paniculata, multiflora,
corollis neglectis c. 4 cm. longa, pedunculo 16 cm. longo dense minu
