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TUDIES IN THE FAMILY ORCHIDACEA

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ORCHIDACEAE

ILLUSTRATIONS AND STUDIES OF

THE FAMILY ORCHIDACE
ISSUED FROM THE AMES BOTANICAL LABORATORY
NORTH EASTON, MASSACHUSETTS

BY

OAKES AMES
As Mi, BS BeBe

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Fascicle IIT

LIBRARY
NEW YORK
BOTANICAL

GARDEN

BOSTON
The Merrymount Press
1908

OLECL
4 Bf
O74.
fase, 3
1B
COPYRIGHT, 1908, BY OAKES AMES
ALL RIGHTS RESERVED

PUBLISHED SEPTEMBER 30, 1908

D. B. UPDIKE, THE MERRYMOUNT PRESS, BOSTON

To A.C. A.

CONTENTS

Observations on the Genus Dendrochilum.

Hemaria Merrillii.
Pleurothallis repens.
Pleurothallis Johnstonii.
Pleurothallis hirsuta.
Physurus secundus.
Physurus polygonatus.
Physurus purpureus.
Physurus venustulus.
Epipactis clausa.
Epipactis dolabripetala.
Cheirostylis octodactyla.
Masdevallia tubuliflora.

Masdevallia Tuerckheimii.

Phreatia prorepens.

Bulbophylium alagense.

Bulbophyllum halconense.

With Plates 26-29

With Plate 30
With Plate 31
With Plate 32
With Plate 33
With Plate 34
With Plate 35
With Plate 36
With Plate 37
With Plate 38
With Plate 39
With Plate 40
With Plate 41
With Plate 42
With Plate 43
With Plate 44
With Plate 44

Bulbophyllum Pleurothalloides. With Plate 44
With Plate 45
Dendrobium ornithoflorum. With Plate 46

[ vii ]

Bulbophyllum mindorense.

PAGE

Cestichis halconensis.
Oberonia McGregorii.
Oberonia mindorensis.
Angreecum philippinense.

Spiranthes saltensis.

Stelis gracilis.

Stelis compacta.

Erythrodes Merrillii.
Nephelaphyllum mindorense.
Eria halconensis.

Eria graciliscapa.

Liparis Saundersiana.

Liparis cardiophylla.

CONTENTS

With Plate 47
With Plate 48
With Plate 49
With Plate 50
With Plate 51
With Plate 52
With Plate 58
With Plate 54
With Plate 55
With Plate 56
With Plate 57
With Plate 58
With Plate 59

Summary of New Species and Combinations

Index

ORCHIDACEA

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ORCHIDACEAE

OBSERVATIONS ON THE GENUS
DENDROCHILUM

IN WHICH A NEW SECTION IS PROPOSED AND FOUR NEW
SPECIES ARE DESCRIBED

HE division of the genus Dendrochilum into five subgen-

era by Pfitzer and Krinzlin* is based primarily on pecul-
iarities of the vegetative structure and secondarily on characters
of the gynostemium and labellum. The spirit of this treatment
is in full accord with the views clearly expressed by Pfitzer in
his Entwurf einer natiirlichen Anordnung der Orchideen (1887),
where he says that the vegetative parts of the Orchidacez are
the most reliable for a natural classification of the genera, and
that the floral parts, being of a less stable nature, are not to be
relied on to any great extent, if we except the larger divisions of
the family.

A profound knowledge of the morphology of the Orchidacez
is, of course, indispensable in all critical work tending toward a
rational classification. Without it, serious blunders must of ne-
cessity creep in and vitiate results. The vegetative parts of or-
chids, however, are frequently the most puzzling to interpret
correctly in a system of classification based in the main upon
them, and have led to unfortunate errors in judgment where the
genus Dendrochilum is concerned. In 1888, when Pfitzer’s ar-
rangement of orchid genera appeared in Engler and Prantl’s Die
* Das Pflanzenreich, 32 Heft (1v. 50. 11. B. 7).

[8]

NEW YOR
BOTANICA
GARDEN

ORCHIDACE#

natiirlichen Pflanzenfamilien, Dendrochilum proper (§ Eudendro-
chilum), distinguished from Platyclinis by a lateral inflorescence
and leaves duplicative in the bud, was placed in the Bolbophyl-
line, fifty-two pages distant from the Coelogynine, in which
Platyclinis was placed. In 1907 Pfitzer and Kranzlin, in accor-
dance with the views of J. J. Smith, combined Dendrochilum
and Platyclinis, making Platyclinis a subgenus of the former.
This radical change proves conclusively that vegetative varia-
tions may arise which disturb materially a system of classification
based almost exclusively upon vegetative parts. Furthermore,
the results are annoying if morphological exceptions occur when
vegetative characteristics are employed in casting large groups.

Notwithstanding the opinions held by Pfitzer regarding the
advisableness of placing more reliance on vegetative than on
floral structures in the classification and arrangement of the
Orchidacez, the genus Dendrochilum, in my judgment, may be
more naturally subdivided if the species are grouped into sub-
genera, or sections, according to the peculiarities of the gynoste-
mium. This system has one difficulty, namely, the necessity of
examining minute details, which may be thought too great for
convenience; but as a knowledge of the species of Dendrochilum
is only to be had after careful analysis of the flowers, this incon-
venience is not so great as at first it may seem to be.

§ Acoridium is clearly set off from §Platyclinis and §Euden-
drochilum by the absence from the gynostemium of stelidia.
§Eudendrochilum is distinguished from the other sections, or
subgenera, by its laterally produced flower shoot (which arises
from the base of a pseudobulb),-although agreeing with § Platy-
clinis in possessing stelidia. These three sections include without
undue violence to affinities all known species of Dendrochilum,
if we except the Philippine species described as D. Woodi-

[ 4 ]

ORCHIDACEA#

anum, a plant which has all the distinctive floral characteris-
tics of § Acoridium and the lateral flower-shoot characteristic of
§EKudendrochilum. D. Woodianum bears the same relationship
to §Acoridium which §Eudendrochilum bears to §Platyclinis;
consequently I have assigned it to a new section in the follow-
ing conspectus, where it stands as a transitional section between
§ Acoridium and § Kudendrochilum.

CONSPECTUS SECTIONUM GENERIS DENDROCHILI

A. Stelidia columne nulla

1. Pedunculus terminalis I. Acoridium

2. Scapus lateralis II. Pseudacoridium
B. Stelidia columne conspicua vel rarissime

rudimentaria

1. Scapus lateralis III. Eudendrochilum

2. Pedunculus terminalis IV. Platyclinis

Nore. The stelidia of the column in §Platyclinis may be rudi-
mentary, and either basal or terminal. In the latter case they
may have the appearance of being segments of the terminal wing
which surrounds the androclinium. Examples of this are to be
found in D. Mearnsi, D. bicallosum, D. Copeland and D. gracili-
scapum, species which approach in aspect those of § Acoridium
and form, perhaps, a connecting group between § Platyclinis and
§ Acoridium (cf. plates 21-24, OrcH1pDacE&, Fase. 11). Dendro-
chilum (§ Acoridium) Foxworthy, which resembles D. (§ Platy-
clinis) gvaciliscapum Pfitz. in general aspect and is unique among
the species of § Acoridium because of its simple labellum, does
not possess stelidia.

In §Platyclinis there is much similarity in the floral structure
of many species, which is extremely confusing and conducive to
the belief that specific distinctions have been too finely drawn.
As examples of this similarity, D. wncatum Reichb. f., D. gracile

ae

ORCHIDACE

Hook. f., D. longispicatum Ames, D. Clemensice Ames, and D. la-
tifolium Lindl. may be cited. All of these species, however, dif-
fer from each other in their vegetative development and in the
position of the stelidia on the gynostemium. The whole section is
readily separated into three groups distinguished by having an
entire, or obscurely 3-lobed, or conspicuously 3-lobed, labellum.

Dendrochilum pumilum Reichb. f. This species was originally
described by H. G. Reichenbach f. in Bonplandia on page 222
of the third volume (1855). The description was drawn from
material gathered by H. Cuming in the Philippine Islands and
distributed as herbarium specimens under the number 2102. In
1861 Reichenbach, in accordance with other sweeping changes,
referred D. pumilum to the genus Ccelogyne in Walpers’s An-
nales Botanices Systematice (6: 236).

Until very recently nothing had been done to clear away the
seemingly unavoidable obscurity under which this species has
remained. In his review of the genus Dendrochilum, J. J. Smith
doubtfully referred D. pumilum to the section Eudendrochi-
lum.* In the Pfitzer-Krianzlin treatment of the Coelogynine it is
placed among the dubious species as insufficiently known. In
my studies of the orchid flora of the Philippine Islands for the
second fascicle of this work, I searched for specimens represen-
tative of Cuming’s no. 2102, and discovered one in the herba-
rium of the British Museum. I have compared this specimen
carefully with the description published by Reichenbach, and
with specimens from the Philippines which I had provisionally
determined to be D. pumilum. Reichenbach’s description in
Bonplandia is not all that one might desire to elucidate an am-

*In Walpers’s Annales Botanices Systematice 6: 927 Reichenbach refers this species to
§Eudendrochilum. It is presumable, however, that he did so through a misinterpretation
of Cuming’s material.

[6 ]

ORCHIDACEA

biguous species, but taken in conjunction with the material in the
herbarium of the British Museum it is reasonably serviceable.
At least it is conclusive, in my opinion, in determining that
Reichenbach’s plant was a Dendrochilum, and to make that
point sure is to advance toward a comprehension of what he
described as D. pumilum. The semifusiform pseudobulbs, about
1 inch long, the linear-lanceolate leaves, 3 inches long, the macu-
late sheaths, the large floral bracts, subequalling the ovaries, the
lanceolate sepals and broader cuneate-ovate petals, and the very
short labellum and gynostemium, described by Reichenbach,
are descriptive of the material in the British Museum, and are
furthermore characteristic of a small group of Philippine species
which belong to § Acoridium. These facts, taken together with
the Cuming specimen and the number under which it was dis-
tributed, leave very slight doubt in my mind regarding D. pu-
milum. Reichenbach’s description of the labellum is, it is true,
quite inadequate, but not wholly without value when interpreted
by the Cuming plant in the British Museum.

To establish absolute certainty regarding D. pumilum, nothing
but the type specimen, which is presumably deposited in Reich-
enbach’s sealed herbarium, will suffice; but in the absence of
that, there appears to be no well founded reason for disregard-
ing the specimens distributed by Cuming under no. 2102. It
was on this evidence that I included D. pumilum in my list of
Philippine orchids in the second fascicle of this series, and pub-
lished a camera-lucida drawing of a flower taken from the speci-
men in the British Museum.

Dendrochilum rhombophorum (Reichb. f.) comb. nov. In

connection with D. pumilum, mention should be made of Celo-

gyne (Pholidota) rhombophora, a Philippine species described by
baa

ORCHIDACE

Reichenbach f. in Linnea 41: 116, which, he states, is allied
with “Celogyne pumila (Dendrochilum? pumilum).” From the de-
scription it is quite impossible to ascertain what Reichenbach’s
species may have been. That it includes Dendrochilum affine,
D. simulacrum, D. anfractum or D. cinnabarinum is highly pro-
bable, but in the absence of types with which to make compari-
sons, I have deemed it best not to attempt to identify Celogyne
rhombophora by purely conjectural methods. Pfitzer and Krinz-
lin refer C. rhombophora to the genus Pholidota in their treat-
ment of the Ccelogynine, but merely on presumption, guided by
Reichenbach’s suggestion. Neither author had been able to dis-
cover authentic material. It is a significant fact, however, that
Reichenbach should have alluded to Dendrochilum pumilum as a
near affinity of Calogyne rhombophora. In view of the foregoing
discussion regarding D. pumilum, I prefer to place Celogyne
rhombophora in the genus Dendrochilum, being fully convinced
that Reichenbach’s description in Linnea and his reference to
Dendrochilum pumilum warrant such a proceeding.

Dendrochilum (§ Acoridium) Foxworthyi sp. nov. Herbe ha-
bitu ceespitosee. Pseudobulbi fusiformes, dense aggregati, graciles,
1-2 cm. longi, monophylli, bracteis elongatis maculatis vaginati.
Folia lineari-oblonga, obtusa vel subacuta, apiculata, 6-14 cm.
longa, 5 mm. lata, paulatim in petiolwm gracilem angustata. Pe-
dunculus gracilis, foliis aquilongus vel subbrevior. Spica cum pe-
dunculo 1.5-2 dm. longa, densa. Bractee glumacez, ovaria su-
perantes, 2 mm. longe. Sepala lateralia oblongi-lanceolata, acuta,
3-nervia, 2 mm. longa, 1 mm. lata. Sepalum dorsale 3-nervium,
2 mm. longum, lateralibus angustius. Petala rhombico-ovata, vel
obovata, acuta, 3-nervia, circa 2 mm. longa, 1.5 mm. lata. La-
bellum simplex, oblongum, apiculatum, ecallosum, ad basim cor-

[8]

ORCHIDACE#

datum vel auriculatum, 3-nervium, 1.5 mm. longum, 1 mm. la-
tum. Columna minuta, columne D. tenelli similis.

PurirrINE Istanps: Epiphyte on mountain tops; flowers yellow. At 1800
m. alt. on Mt. Pinalubo, Province of Zambales, Luzon, April, 1907, F. W.
Foaworthy (no. 2542). Specimens in herb. Bureau of Science, Manila, and
in herb. Ames. Cottector’s Nore: “ The most prominent thing on top of the
mountain. It covers the mossy tree trunks very densely. The leaves are a dark
rather shiny green.” (‘The mountain is also called Pinalobo and Pinatubo.)

The column being destitute of stelidia, this species is referred
to the section Acoridium. It is clearly distinguished from all other
known species of this section by its simple oblong labellum. In
habit D. Foxworthy resembles D. tenuifolium, from which spe-
cies it differs in its flowers. Above, the labellum is described as
ecallose. In the dried condition, at least, no calli are perceptible
under the high-power lens of the dissecting microscope. If calli
are present they must be extremely minute or evanescent. The
graceful racemes are about 5 cm. long, bearing as many as thirty
flowers, 2 mm. apart on pedicels 2 mm. long. A wide range of
variation is noticeable in the material gathered by Foxworthy
on Mt. Pinalubo, some of the specimens being twice as tall as
others, but no corresponding variation that I have been able to
discover occurs in the flowers of the extremes.

According to the classification of Dendrochilum species
adopted by Pfitzer and Kranzlin in Das Pflanzenreich, D. Fox-
worthy: would seem to belong to the subgenus Aphanostelidion,
which is in part characterized by the absence of stelidia from the
column. It does not seem to me advisable, however, to recognize
Aphanostelidion, as it necessitates confusing artificiality in the
disposition of the species in the genus.* Had Pfitzer been ac-
quainted with the numerous species which have been recently
discovered in the Philippine Islands it is probable that he would

*Cf. Orchidaceae, Fasc. 1. pp. vii and viii.

[9]

ORCHIDACE

have refrained from establishing a subgenus which passes so
easily into § Acoridium. When Pfitzer prepared his monograph,
less than half a dozen species of the Acoridium section were
known to him. D. Foxworthy is the twenty-fourth species to
be added to § Acoridium, collected for the Bureau of Science at
Manila, since 1905.

Dendrochilum (§Acoridium) cinnabarinum Pfitzer in Das
Pflanzenreich tv. 50. 11. B. 7, Orch.-Monandre-Celogynine 104
(1907); Ames OrcHIDACE#, Fase. 11. p. viii (1908). “ Pseudo-
bulbi anguste conico-ovati, juniores vaginis mox in fibras solutis
inclusi, in rhizomate repente dense seriati, monophylli, 1 em longi,
4 cm [sic] crassi. Folium in petiolum pseudobulbo duplo longi-
orem sensim angustatum, lineari-lanceolatum, gramineum, 12 cm
longum, 5 mm latum acutum, 3-nervium, nervo medio subtus
magis prominente. Scapus gracilis, erectus, hysteranthus, folium
superans; racemus brevis, pluriflorus ; bractez ovate, acute, con-
volute, scariosz, ovarium pedicellatum superantes, bractez in-
fime steriles erecta. Sepalum dorsale rhombeum, subacutum;
lateralia multo latiora obliqua. Petala rhombeo-orbicularia, longe
acuminata. Labelli nani trilobi lobi laterales breves dentiformes
antrorsum curvati, medius cuneato-obovatus, apiculatus, carinis
obsoletis.—F lores cinnabarini. ... Monsungebiet, Provinz der
Philippinen: Benguet (Loher n. 461!).— Herb. Kew.”— Pfit-
zer, loc. cit.

REDESCRIPTION
Pseudobulbs 1-1.3 em. long, 3-4 mm. thick near the base, grad-
ually tapering upwards, corrugated when dry. Leaves subcoria-
ceous; /amina up to 8 cm. long, 4-6 mm. wide, many-nerved,
prominently 3-nerved beneath; petiole slender, 2-3 cm. long,

[ 10 ]

ORCHIDACEA

0.5 mm. in diameter, together with the pseudobulbs clothed with
tubular acute or obtuse bracts, which, when dry, are conspicu-
ously many-nerved. Peduncle wiry, shorter than the leaves or
exceeding them, 1-1.5 dm. long, persistent on the mature and
leafless pseudobulbs. Raceme erect, loosely flowered, + 4 cm. long.
Floral bracts 4 mm. long, cymbiform, acute, the lowermost one
empty, embracing the foot of the rhachis, dilated, truncate-aris-
tate. H/owers 6 mm. across, orange-red when dry, cinnabar when
fresh, according to the collector’s observations. Lateral sepals
oblique, 3-3.5 mm. long, 3 mm. wide, broadly ovate, obtuse,
3-nerved. Upper sepal about 4mm. long, 2.5 mm. wide, rhombic-
lanceolate to ovate-lanceolate. Petals rhombic-cuneate, at the
rounded apex acuminate or subcaudate, 2.5 mm. long, 2.75 mm.
wide, 3-nerved. Labellum 3-lobed; middle lobe hastate, acute,
somewhat fleshy, 2 thm. long, concave and bicallose at base; calli
nipple-like, inflexed; dateral lobes diaphanous, oblong, obtuse or
subacute, relatively small, 1 mm. long. Column typical of the
section.

My description is based on a specimen in the United States
National Herbarium, numbered 461, which A. Loher collected
in Benguet, Luzon. This specimen is a duplicate of the one
on which Pfitzer established Dendrochilum cinnabarinum. In
Fascicle 11 of ORCHIDACEZ it was stated that neither the de-
scription nor the figure published by Pfitzer and Krinzlin is re-
liable, both conveying an erroneous and a misleading impression.
The position assigned to the species is quite anomalous and is ex-
plicable only on the assumption that Pfitzer mistook the lateral
lobes of the labellum for stelidia arising from the base of the
minute column. In his figure prepared to illustrate D. cinnaba-
rinum the lateral lobes of the labellum are not shown, nor is the

[1]

ORCHIDACE

column more than vaguely indicated. The position of the species
in the subgenus Platyclinis (which, according to Pfitzer and
Krinzlin, is characterized in part by the presence of stelidia on
the column and by the comparative size of the middle lobe and
of the lateral lobes of the labellum) is therefore significant and
indicates either an oversight or an absolute misinterpretation
of structural details. If the conspectus of the genus Dendro-
chilum in the Celogynine is followed, D. cinnabarinum on every
count would be placed in the subgenus Aphanostelidion and by
no means in the subgenus Platyclinis. Therefore it is supposable
that Pfitzer overlooked the characteristic structure of the label-
lum and column in the material on which he based his concep-
tion of the new species.

It is much to be regretted that error is so difficult to avoid
in the study of minute flowers of complex structure, as the con-
sequences of such error are far reaching and likely to lead to
duplication of names and, in the absence of types, to constant
confusion.

Dendrochilum (§ Acoridium) Loheri sp. nov. Aff. D. venustulo
sed in floribus major. Psewdobulbi subglobosi vel subfusiformes,
juniores vaginis subacutis mox in fibras solutis inclusi, +8 mm.
longi. Fohkum lineari-oblongum, acutum, 4-6 cm. longum,
3-3.5 mm. latum, 9-11-nervium, nervo medio subtus magis pro-
minente; petiolus +1 cm. longus. Pedunculus folia superans vel
illis equilongus, gracilis, 4-8 cm. longus. Inflorescentia laxiflora.
Bractece glumacez, ovaria superantes. Sepala lateralia ovato-
lanceolata, uninervia, acuta, 5 mm. longa, 2.5 mm. lata. Sepalum
dorsale lanceolatum, acutum, 1-nervium. Petala lanceolata,
acuta, 1-nervia, 4.5 mm. longa, 1.5 mm. lata. Labellum 8-loba-
tum; obi daterales ovato-falcati, obtusi, 1.5 mm. longi, 1 mm.

[ 12 ]

ORCHIDACE/#

lati; lobus medius transverso-reniformis, apiculatus, circa 1.25 mm.
latus; prope basim lobi utriusque lateralis et in depressione disci
callus vel papilla. Columna sectionis.

PuitirinE Istanps: Benguet, Luzon, 4. Loher (no. 461 A). Type speci-
men in U.S. National Herb.

Dendrochilum Lohert, as indicated above, is a near ally of D.
venustulum (Ames) Pfitz. It is also closely allied with D. stricti-
forme (Ames) Pfitz., from which it is readily distinguishable by
means of its very dissimilar labellum. The flowers are much larger
than those of D. venustulum and are borne in loose racemes, and
the narrow leaves and different habit are quite distinctive, while
the reniform apical lobe of the labellum overlaps the lateral lobes,
—a characteristic which I have not noted in D. venustulum. The
specimens on which my description is based were collected by
A. Loher. I found them mounted on the same sheet with D. cin-
nabarinum in the United States National Herbarium. I have
marked the specimen on which D. Loheri is based no. 461 A
(D. cinnabarinum was distributed by Loher under the num-
ber 461).

Though additional material from the Philippines may break
down the distinctions between D. venustulum and D. Loheri,
which I now regard as specific, the specimens thus far studied do
not make such a result seem probable.

Dendrochilum (§ Acoridium) anfractoides sp. nov. Aff. D. an-
Sracto. Pseudobulbi aggregati, subfusiformes, 2.5 cm. longi, juni-
ores vaginis mox in fibras solutis inclusi. Foliwm oblongi-lance-
olatum, acutum, 6-8 cm. longum, 8-138 mm. latum; petiolus
1.5 cm. longus. Pedunculus gracilis, erectus, folium vix superans.
Racemus subnutans, distichus, multiflorus; rhachis vix flexuosa.
Bractee duplo longiores quam pedicellus ovariumque, 6 mm.

[ 13 ]

ORCHIDACE

longe, 4 mm. late, ovate, obtusz, conduplicate. Sepala lateralia
lanceolata, acuta, 3-nervia, 5 mm. longa, 3 mm. lata. Sepalum
dorsale oblongi-lanceolatum, vel oblongi-ellipticum, acutum,
3-nervium, 6 mm. longum, 2.75 mm. latum. Petala elliptica, vel
suborbiculata, marginem versus erosula, 4.5 mm. longa, 3 mm.
lata. Labellum 3-lobatum, 5.5 mm. latum; lobi laterales, 2.5 mm.
longi, valde reflexi, acuti; lobus intermedius tridentatus, dens
medius lateralibus major, 0.75 mm. longus; cad in basi labelli.
Columna crassa, cucullo cirea androclinium crenulato, columnee
D. anfracti similis.

Puitirrine Istanps: At 4000 ft. altitude, Province of Benguet, Luzon,
July, 1907, Major E. A. Mearns (no. 4311). type in herb. Bureau of Sci-

ence, Manila.

Dendrochilum anfractoides is clearly allied to D. anfractum
(Ames) Pfitz., as the specific name implies. It differs consider-
ably, however, from D. anfractum in habit, especially in the re-
lative length of the peduncle and leaves, and in the rhachis,
which is less conspicuously zigzag. It also differs from D. anfrac-
tum in the labellum, which is less rounded at the base and dis-
tinctly tridentate at the apex of the middle lobe. Near the base
of the labellum are two fleshy calli transversely situated, which
are linear in conformation rather than papilla-like as in D. an-
fractum; between these calli in the sac or depression of the
labellum are other calli or wart-like excrescences which vary in
size and in number. Regarding these supernumerary calli, it must
be said that they are not present in all of the flowers examined
and are not of diacritical worth. The column of D. anfractoides
is fleshy, very thick, 2.5 mm. long, with the base of the anther
concealed by the crenate or crenulate terminal wing, and with
the rostellar protuberance conspicuous and projecting in front.

It is unfortunate that both D. anfractum and D. anfractoides

[ 14 ]

ORCHIDACE#

are based on scanty material. The former species is represented
by two specimens, one in the herbarium of the Bureau of Sci-
ence at Manila, and the other in my own collection of Dendro-
chilum species. These specimens, however, are in an excellent
state of preservation, and are apparently fully developed. D. an-
fractoides, on the other hand, is known only through a single
plant bearing six leaves and two mature racemes. In aspect it is
wholly unlike D. anfractum, although the floral segments, with
the exception of the labellum, are similar to the floral segments
of the older species. Notwithstanding the peculiarities of distri-
bution exhibited by many orchids, which preclude large repre-
sentative collections being made, the plants often occurring scat-
tered in small colonies or as single individuals over wide areas,
collectors are too frequently inclined to secure single specimens,
merely as records, forgetful of the necessities of the science they
are attempting to aid. Often it is not desirable to let material lie
unnamed for years, in the hope that more extensive collections
will throw light upon it, nor does this procedure seem necessary
when the specimens are well developed and apparently normal.
When, however, lack of material renders impossible a thorough
study of extreme forms, errors in judgment are likely to be fre-
quent and unavoidable. A comparison of D. anfractoides with
D. anfractum may be made by means of the plate published here-
with and plate 21 in the second fascicle of ORcCHIDACE.

Dendrochilum (§ Acoridium) Curranii sp. nov. Aff. D. tenut,
speciel quam habitu et structura hee species conspicue simulat.
Pseudobulbi fusiformes, graciles, a basi fastigati, 2-2.5 cm. longi.
Folum petiolatum, lineari-lanceolatum, obtusum, conspicue
3-nervium, 5-10.5 cm. longum, 7-12 mm. latum; petiolus cirea
2 cm. longus. Pedunculus flexuosus, +10 cm. longus, gracilis.

[ 15 ]

ORCHIDACEZ

Racemus gracilis, 5-7.5 cm. longus, apicem folii superans. Brac-
tece inflorescenti# +2 mm. longe, pedicellum brevem et ovarium
multo excedentes. Sepala lateralia lanceolata, acuminata, acuta,
subcaudata vel incrassata ad apicem, 2.5 mm. longa. Sepalwm
dorsale simile, lanceolatum, acuminatum, 1-nervium. Petala li-
neari-lanceolata, acuminata, acuta, l-nervia, 2 mm. longa. La-
bellum 8-lobatum; lobi laterales membranacei, semicrescenti-
formes, rotundati ad apicem, obtusi; /obus medius sagittatus,
acutus, 0.75 mm. longus; cad 3, unus ad basim lobi lateralis
utriusque, unus in medio partis saccate labelli. Columna minuta,
column Dendrochili tenell similis.

Purine Istanps: Type from Mt. Maquiling, Prov. Laguna, Luzon,
January, 1908, H. M. Curran (no. 3077). Specimens in herb. Bureau of
Science, Manila, and in herb. Ames.

Dendrochilum Curranii suggests in general habit D. tenue
(Ames) Pfitz., although the leaves are much broader in pro-
portion to their length and the structure of the flowers is very
different. The sepals and petals are strongly involuted near the
tips and in the dried state have the appearance of being caudate.
When dry, the perianth is whitish, with the tips of the sepals
and petals yellow or orange.

If the inflorescence of D. tenue were to be transferred to the
foliage of D. venustulum, the result would in aspect approach
the general appearance of D. Curraniv.

[ 16 ]

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ORCHIDACEA

PiateE 26: Dendrochilum Foxworthyi

I. Plant, natural size. II. Plant, reduced by one
half. I and II exhibit extremes of variation in
height. A, flower; a, labellum. Both flower and
labellum drawn, enlarged, with the aid of the
camera lucida.

p20

ORCHIDACEA

Piate 27: Dendrochilum Loheri

I, drawn, natural size, from a specimen de-
posited in the United States National Herba-
rium at Washington, D. C., collected in Luzon,
Philippine Islands, by 4. Loher, and distributed
by him under the number 461. A, flower; a, la-
bellum drawn, enlarged, with the aid of the ca-
mera lucida.

PLATE 27: Dendrochilum cinnabarinum
II, drawn from a specimen deposited in the
United States National Herbarium at Wash-
ington, D. C., collected in Luzon, Philippine
Islands, by 4A. Loher, and distributed by him
under the number 461. B, flower; b, labellum
drawn, enlarged, with the aid of the camera
lucida.

[ 18 ]

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ORCHIDACEA

PLATE 28: Dendrochilum anfractoides
Plant, natural size, drawn from the type in the
herbarium of the Bureau of Science, Manila,
Philippine Islands. 1, flower; 2, labellum; 3, co-
lumn; 4, pollinia. All parts drawn, enlarged,
with the aid of the camera lucida.

[ 19 ]

ORCHIDACEA

Priate 29: Dendrochilum Curran

Plant, natural size. 1, flower; 2, labellum. Flower
and labellum drawn with the aid of the camera
lucida from a co-type.

[ 20 ]

Pl. 29

DENDROCHILUM

& Uurrainit ee

i

HAMARIA MERRILLII

Hemaria Merrillii Ames in Philipp. Journ. Sci. (Bot.) 2: 815
(1907).

Plant erect or ascending, up to 3 dm. high, leafy at the base.
Rhizome creeping. Leaves 5—7, ovate-lanceolate, shortly acumi-
nate, acute, 1-3 cm. long, 7-15 mm. wide, chartaceous when
dry, 7-nerved, shortly petiolate; petioles expanded at base into
short, inflated sheaths which surround the stem. Peduncle com-
paratively slender, smooth or sparsely pubescent below, pubes-
cent above, with four or five acuminate acute bracts, the lower-
most sheathing. Haceme somewhat cylindrical, 7-12-flowered,
2-8 cm. long. Flowers whitish, smooth. Floral bracts lanceolate,
acuminate, acute, from a broad base, exceeding the ovaries, mar-
gins ciliolate or denticulate. Lateral sepals oblong-lanceolate,
acute, 1-nerved, 5-6 mm. long, about 2 mm. wide. Upper sepal
lightly adherent to the petals, narrowly oblong-lanceolate, sub-
acute, 1-nerved, about 6 mm. long. Petals asymmetrical, lan-
ceolate, obtuse, 1-nerved, 6 mm. long, 2 mm. wide above the
middle. Labellum 5 mm. long, complex, with 2 fleshy protuber-
ances, warts, or rotund cal within, somewhat saccate at the
base, thickened on each side, expanded at the apex into a mem-
branaceous crenulate-margined transversely oblong retuse mu-
cronate /amina ; lamina 4 mm. wide, about 2 mm. long. Column
short, about 4 mm. long to the tip of the anther; anther large,
exceeding the bifid rostellum, 3 mm. long.

PairppinE Istanps: Terrestrial in mossy forest at 4300 ft. alt. on Mt. Hal-
con, Mindoro, flowers white, odorless, calyx greenish, November 13, 1906,
E. D. Merrill (nos. 5840 type & 5819). The description was made from a co-
type in herb. Ames.

The Neottiine-Physurez group, according to Pfitzer’s treat-
[ 21 ]

ORCHIDACEAE

ment of the Orchidacez, is made up of twenty-four genera, which,
with few exceptions, are difficult to interpret and are separated
on characters which must appear trivial to one endeavoring to
apply them. In my paper on the Mt. Halcon orchids, I assigned
the present species, not without misgiving, to the genus He-
maria. Undoubtedly close scrutiny of the species which make up
the genera allied to Hzemaria will bring about a much broader
conception of generic limitations than is now admitted. It would
seem that many of the genera in the Physurez were originally
based on a few species, and then perpetuated notwithstanding
contradictory evidence brought in by later acquisitions. Obsti-
nate adherence to the present conception of generic limitations,
in my judgment, must lead to perplexity in the case of the Phy-
suree. Natural affinities, at least, are obscured by the tendency to
maintain, as distinct, genera which pass into one another by al-
most imperceptible gradations.

[ 22 ]

HASMARIA Al erest ln i pee

ORCHIDACE

PuaTteE 30: Hemaria Merrillii

Plant, natural size. 1, flower; 2, labellum, one
of the warts at base represented in full view,
the other partly concealed by the margin of the
sac; 3, petal; 4, pollen-mass; 5, column, some-
what diagrammatically represented; 6, floral
bract. All parts drawn, enlarged, with the aid
of the camera lucida from a co-type.

PLEUROTHALLIS REPENS

Pleurothallis (§ Apodz prorepentes) repens Ames Orcuipa-
cE&, Fase. 11. p. 271 (1908).—P. hians Ames ex J. D. Smith
Enum. Pl. Guatemal. pt. vit (Index), not P. hians Lindl.

Rhizome slender, creeping. Secondary stems ascending, 4-5 mm.
apart, 5-10 mm. long, very slender, jointed, clothed with tubu-
lar sheaths, which are acuminate at the apex. Leaves linear-
spathulate or narrowly oblanceolate, attenuated at base into
a slender petiole; lamina 2.5-4.5 cm. long, 3 mm. wide near
the apex; petiole +1 cm. long. Peduwncle filiform, 7-15 mm. long,
with several scarious, aristate bracts about 2 mm. long. Flowers
about four in number, apparently produced in succession, only
one at a time being fully expanded. Bracts subtending the
slender pedicels, dilated above, obliquely truncate, acute. Lateral
sepals free to the base, lanceolate, acute, 1-nerved, 3 mm. long,
1.5 mm. wide. Upper sepal somewhat broader than the laterals,
otherwise similar to them. Petals ovate-acute, 2-2.5 mm. long,
1.5 mm. wide, conspicuously 1-nerved, similar to the sepals in
outline and texture. Labellum fleshy, narrowly lingulate, sub-
acute, 3 mm. long, 1 mm. wide, margins strongly revolute, sur-
face minutely papillose. Column minute, stout, with rounded
membranaceous lateral wings or lobes at the summit.

In general habit Plewrothalhs repens resembles the West In-
dian P. Sertularioides Spreng, although it is distinct from it in
detail. The floral parts are very dissimilar, especially the fleshy
undivided papillose labellum. From the slender creeping rhi-
zome the secondary stems arise alternately, and lateral branches
originate at comparatively long intervals. The younger leaves
vary somewhat in outline from the mature ones in being rela-

[ 24 ]

ORCHIDACE

tively broader in comparison with their length and in possessing
very short petioles. The roots are produced in pairs on the rhi-
zome near the point of origin of the secondary stems.

In my herbarium there is a single specimen of P. repens com-
municated by John Donnell Smith, which constitutes the type
of the species. This specimen was collected at Cubilquitz, De-
partment of Alta Verapaz, Guatemala, at an altitude of three
hundred and fifty metres, by H. von Tuerckheim. The label
bears two numbers, namely, 8305, which apparently designates
the number under which J. D. Smith distributed his specimens,
and 496, which is probably the field-number used by von Tuerck-
heim.

In his Enumeratio Plantarum Guatemalensium, unfortu-
nately, Smith has used my name Pleurothallis hians to distin-
guish this species. P. hians is a homonym. This fact was discov-
ered too late for correction in Smith’s Enumeratio.

[ 25 ]

ORCHIDACE&

PiaTE 31: Pleurothallis repens
Plant, natural size, reproduced from the type
specimen. 1, flower; 2, column and base of
labellum. Parts drawn, enlarged, with the aid of
the camera lucida.

[ 26 J

} CAMS MTOsaa Ay

PLEUROTHALLIS JOHNSTONII
P. Johnstonii Ames Orcuipaces, Fasc. 1. p. 271 (1908).

Rhizome creeping, slender, clothed with tubular scarious sheaths.
Secondary stems erect or ascending, about 1.75 mm. long, or
shorter. Sheaths membranaceous, scarious, lax, truncate. Leaf
oblong-elliptic, retuse-apiculate at the apex or slightly triden-
tate, coriaceous, +5 mm. long, +3 mm. wide. Peduncle erect or
ascending, filamentous, graceful, few-flowered (with only one
flower expanded at a time?), 6-10 mm. long. Ploral bracts
minute, pellucid, 1 mm. long. Lateral sepals lanceolate-acute,
1-nerved, free to the base, +2.5 mm. long. Upper sepal lanceo-
late, prolonged into a slender filamentous tail, 1 em. long includ-
ing the tail; dilated part lanceolate, 2 mm. long. Petals linear-
lanceolate, 1-nerved, shorter than the sepals. Labellum about
1 mm. long, ovate or oblong, obtuse, 3-nerved, fleshy, with a
fleshy callus at the base. Column 0.5 mm. long, margin of the
clinandrium entire.

VenezvEta: Alt. 600 m., Mt. San Juan, Island of Margarita, July 16, 1903,
J. R. Johnston (no. 238).

The examination of another flower taken from the type spe-
cimen has made necessary several important alterations in the
original description, in which the dorsal sepal was inadvertently
confused with one of the lateral sepals.

[ 27 ]

ORCHIDACE

Pirate 32: Pleurothallis Johnston

The drawing is a restoration from the type in
the author’s herbarium. I. Part of a plant, na-
tural size. II. Part of the plant enlarged and
drawn with the aid of the camera lucida.
1, flower; 2, labellum; 3, lateral sepal; 4, petal.
Parts drawn, enlarged, with the aid of the
camera lucida.

[ 28 ]

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PLEUROTHALLIS HIRSUTA

Pleurothallis hirsuta Ames Orcuipacem, Fase. 11. p. 270
(1908) with fig.

Plants densely cespitose. Secondary stems 2-2.5 em. long, semi-
terete, grooved in front, clothed near the base with an elongated
tubular sheath which is green when the leaves are immature and
scarious when they approach maturity. Leaf elliptic-oblong, tri-
dentate or retuse-apiculate at the apex, 3—5.5 cm. long, 1-2 cm.
wide, rigid, coriaceous, with a conspicuous median groove.
Raceme exceeding the leaves. Floral bracts tubular, obliquely
truncate, acuminate, acute at the apex, 2.5-3 mm. long, much
shorter than the pedicels. Pedicels 6 mm. long, slender, minutely
spotted with madder-purple. Flowers 4-10, green in the bud,
when mature, greenish yellow, densely and irregularly spotted
with madder-purple, partly covered by purplish hairs. Lateral
sepals apiculate, semi-elliptical, cohering to about the middle,
4-6 mm. long, 2.5 mm. wide, together forming a somewhat
orbicular plate; outer half of each sepal yellow, spotted with
purple and rather densely hairy, inner half almost uniform
brown-purple. Upper sepal 6-8 mm. long, colored similarly to
the outer half of the lateral sepals, somewhat winged dorsally
alony the median nerve, convex above, concave near the base,
margin hirsute, with purplish hairs. Petals spathulate, obtuse,
3 mm. long, 1.5 mm. wide near the tip, yellowish with brown-
purple spots. Apical half of the labellum 2 mm. long, oblong,
obtuse, bicarinate or bilamellate; basal half, or clazw, linear, about
2 mm. long. Column 8 mm. long, slender, erect, purple-spotted,
irregularly and deeply toothed or fringed at the apex.

Mexico: 1905, C. G. Pringle (nos. 8095, 10158 in herb. Ames).

[ 29 ]

ORCHIDACEA

Pleurothallis hirsuta belongs to the section Elongate, charac-
terized by having comparatively long upright secondary stems
and elongated racemes which exceed the leaves.

[ 30 |

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ORCHIDACE

Pxiate 33: Pleurothallis hirsuta
Plant, natural size. Separate flower enlarged.
Drawn from the living plant which furnished
the material on which the original description
was based.

[ 31 ]

PHYSURUS SECUNDUS
Physurus secundus Ames OrcuipacE&, Fasc. 11. p. 260 (1908).

Rhizome comparatively stout, creeping, rooting at intervals.
Leaves about five in number, basal, short-petioled, the basal part
of the petioles forming inflated sheaths which become scarious;
lamina ovate-lanceolate, subcordate, acute, 2-3 cm. long, 1.6 cm.
wide. Scape erect, smooth below or only sparsely hairy, pubescent
above, about 1 dm. long, with about three tubular sheathing
acuminate acute bracts. Raceme about 6 cm. long. Flowers se-
cund, about 16 in number. Floral bracts smooth, lanceolate,
acuminate, acute, about equalling the sessile ovary, 5-7 mm. long.
Ovaries ellipsoidal, smooth. Perzanth white(?). Lateral sepals
lanceolate, acute, 1-nerved, 4-5 mm. long, 2 mm. wide. Upper
sepal adherent to the petals, oblong-lanceolate, 1-nerved, con-
cave, about 4 mm. long. Petals somewhat spathulate, 1-nerved,
minutely denticulate on the free margin, 4-5 mm. long. Label-
lum produced at base into a blunt scrotiform spur ; lamina oval,
3-nerved, entire, about 3 mm. long, somewhat contracted at the
blunt apex into a minutely fringed or denticulate plate; spur,
or sac, 3-3.5 mm. long, about 2 mm. in diameter, blunt and
grooved at the tip; within, near the tip are several minute, rather
fleshy, subclavate hairs, or elongated papilla. Column slender,
about 3.5 mm. long.

Mexico: Sierra de Reyes, at 9000 ft. alt., State of Oaxaca, November 9,
1894, C. G. Pringle (no. 5837). Type, consisting of a single plant, in herb.
Gray.

The description given above has been made anew from the
type. As more material comes to light variations from the
measurements noted in the description may be expected. The
species of the genus Physurus are often variable in the vegeta-

[ 82 ]

ORCHIDACE

tive parts, as may be noted in Physurus querceticola Lindl., a
species found in Florida, the extreme forms of which might be
mistaken at first glance for distinct species.

Physurus secundus is in habit very similar to Epipactis repens,
although generically unlike it.

[ 83 ]

ORCHIDACE

Piate 34: Physurus secundus
The drawing is a restoration from the type in
the Gray Herbarium. The plant is represented
natural size. 1, flower; 2, labellum. Parts drawn,
enlarged, with the aid of the camera lucida.

[ 34 |

PHYSURUS

SL 54

PHYSURUS POLYGONATUS

Physurus polygonatus Ames in J. D. Smith Hnum. Pl. Gua-
temal. pt. vil. p. 50, no. 7678 (1905), nomen; ORCHIDACEA, Fase.
Il. p. 259 (1908).

Plant 26.3 em. high from a creeping rhizome. Stem rather stout,
below the leaves smooth. Leaves smooth, asymmetrically ovate-
lanceolate to elliptic-oblong, abruptly acuminate, acute, con-
spicuously 3-nerved, 3-7 cm. long, 1.6-3 cm. wide; petioles
slender, dilated at base into scarious sheaths. Above the leaves
the stem is pubescent and sheathed by 3 lanceolate, acute bracts.
Raceme +6 cm. long, rather loosely many-flowered. Rhachis finely
pubescent. Floral bracts lanceolate, acuminate, acute, sparsely
pubescent, exceeding the sparsely pubescent ovaries, 5-8 mm.
long. Flowers small. Lateral sepals sparsely pubescent, oblong-
lanceolate, obtuse, 1-nerved, 4 mm. long, about 2 mm. wide.
Upper sepal linear-lanceolate, 1-nerved, sparsely pubescent, nar-
rower than the laterals. Petals narrowly spathulate, 1-nerved,
4mm. long. Labellum from the tip of the spur to the apex of
the subreniform plate, 5 mm. long; plate mucronate, 2 mm.
long, 3 mm. wide.

The single specimen which constitutes the type was collected
at Cubilquitz in Guatemala, by H. von Tuerckheim. The spe-
cific name alludes to the resemblance of the foliage to that of
some species of the genus Polygonum. P. polygonatus appears
to be closely allied with P. repens Lindl. and P. hyphematicus
Reichb. f. I have been unable to identify my material satisfac-
torily with any of the species contained in the herbarium of the
British Museum of Natural History or of the Royal Gardens at
Kew, or in any of the large collections which I have consulted.

[ 35 ]

ORCHIDACE#

PuiateE 35: Physurus polygonatus

Plant, natural size. 1, labellum; 2, petal; 3, lat-
eral sepal. All of the parts were drawn with the
aid of the camera lucida from the type.

[ 36 ]

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PHYSURUS£

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PHYSURUS PURPUREUS

Physurus purpureus Ames in J. D. Smith Enum. Pl. Guate-
mal. pt. vil. p. 50, nos. 8000 and 8759 (1905), nomen; ORCHIDA-
cE, Fase. 11. p. 259 (1908).

Plant leafy near the base, slender, from an elongated creeping
rhizome. Leaves dark red-violet in color, about 6 in number,
membranaceous, conspicuously 3-nerved when dry, lanceolate,
acute, tapering at the base, 4-5 cm. long, 1.5-2 cm. wide; petiole
slender above, dilated into loose nervose sheaths which embrace
the slender stem. Stem above the leaves 14 cm. long, silky-pu-
bescent, clothed at intervals by linear-lanceolate acute bracts.
Raceme 6.5 cm. long, rather loosely many-flowered.. Floral
bracts about equalling the ovaries, exceeded by the fruit. Ovaries
sparsely hairy. Lateral sepals sparsely pubescent, linear-oblong,
obtuse, 1-nerved, 4 mm. long, 1 mm. wide. Upper sepal similar
to the laterals. Petals similar to the lateral sepals, smooth. La-
bellum prolonged into a cylindrical spur at base, narrowed above
the spur into a grooved mesochil; epichil a lunate or bifalcate
minutely denticulate mucronate plate, 4mm. wide; spur 3.5 mm.
long.

The specific name of the plant alludes to the color of the leaves,
which in life, according to the collector’s observations, were dark
red-violet. P. purpureus was collected by H. von Tuerckheim
in Cubilquitz, Guatemala, in June, 1904. The type specimen (in
herb. Ames) bears the number 8759.

[ 87 |

ORCHIDACEA

PiateE 36: Physurus purpureus
Plant, natural size, reproduced from the type.
1, lateral sepal; 2, petal; 3, labellum. All ana-
lytical parts drawn, enlarged, with the aid of
the camera lucida.

[ 38 ]

PHYSURUS

2

PHYSURUS VENUSTULUS

Physurus venustulus Ames in J. D. Smith Hnum. Pl. Guate-
mal. pt. vil. p. 50, no. 8591 (1905), nomen ; ORCHIDACEA, Fase. 11.
p- 261 (1908).

Plants among the smallest of the genus, 6-10 cm. high, erect or
ascending from an elongated fleshy creeping rhizome. Leaves
membranaceous, nervose, lanceolate, acute, 1-3 cm. long,
5-10 mm. wide; petiole slender, forming a sheath at base, which
loosely clothes the stem. Stem glabrous, succulent. Raceme few-
or many-flowered; rhachis smooth. Floral bracts foliose, lanceo-
late, acute, equalling or exceeding the ovaries. Powers subglo-
bular, white, about 3 mm. long. Lateral sepals oblong-lanceolate,
1-nerved, obtuse, 3.5 mm. long, 1.5 mm. wide. Dorsal sepal
lanceolate, obtuse, 1-nerved. Petals linear-lanceolate, 1-nerved,
asymmetrical, 3.5 mm. long, 1 mm. wide. Labellum globular-
saccate at base, dilated into a suborbicular or subreniform apicu-
late plate above the concave mesochil; sac 3-nerved, 2 mm. long,
at base 2 mm. wide; mesochil 2 mm. long; plate or epichil 1.5 mm.
long, 2 mm. wide, with a transverse membranous ridge between
it and the mesochil.

The type was collected by H. von Tuerckheim (no. 8591)
at Cubilquitz, Guatemala, at an altitude of three hundred and
fifty metres, in December, 1903. My material appears to be con-
specific with an unnamed specimen in the herbarium at Kew,
collected by R. Tate (no. 464) in Nicaragua, in 1867-8. In habit
the plants resemble depauperate specimens of Physurus querce-
ticola Lindl. They appear to have been flaccid when alive, and
somewhat succulent. I have been unable to discover that this
species has been heretofore described.

[ 39 ]

ORCHIDACE

Piate 37: Physurus venustulus
Two plants, natural size. 1, flower enlarged;
2, labellum showing sac, mesochil and epichil,
enlarged. All parts drawn from the type speci-
men with the aid of the camera lucida.

[ 40 ]

ees

PHYSURUS

asi

EPIPACTIS CLAUSA
Epipactis clausa A. A. Eaton in MS.

The solitary plant which composes the type specimen is about
2 dm. tall, ascending or erect from an elongated creeping rhi-
zome. Leaves three, 2-8 cm. apart, dark green with whitish or yel-
lowish veins, ovate-lanceolate, acuminate, acute, the margin mi-
nutely crenulate (when dry ?); /amzna of the largest leaf 3.5 cm.
long, 1.8 em. wide above the middle; uppermost leaf bract-like;
petiole very short, or none, consequently the lamina of each leaf
has the appearance of being sessile on an inflated sheath, which
is about 1 cm. long and which clothes the thickened stem. Ra-
ceme rather dense, about 4 cm. long, with a slender pubescent
rhachis and lanceolate acute bracts subtending the somewhat glo-
bular flowers. Lateral sepals coherent at base, ovate, 1-nerved, ob-
tuse, the apical margin involute. Petals asymmetrical, 1-nerved,
obtuse, above the claw dilated into a subrhombic irregularly
lanceolate or subdolabriform plate. Labellum lightly saccate at
the base, very broadly ovate when flattened out, contracted at
the apex into a blunt point; margin irregularly crenulate, with
scattered minute almost invisible papille; within the sac are
several clavate hairs, and near its middle, arising from the me-
dian nerve, two relatively large clavate processes. Anther ex-
ceeding the rostellum.

PuitipPINE Istanps: Canlaén Volcano, Negros Occidental, March, 1902,
C. S. Banks (without number, marked as type, in the herbarium of the
Philippine Bureau of Science).

The specimen on which the description is based has minute
globular flowers which have the appearance of being partially
closed owing to their immature condition. Whether or not these
flowers exhibit the normal and characteristic tendencies of the

[ 41 ]

ORCHIDACEE

inflorescence, the material at hand does not warrant an expres-

sion of opinion.

[ 42 ]

Py 38

ClLaUusa

HA Cee

ORCHIDACE

Piate 38: Epipactis clausa
Plant, natural size, drawn from the type speci-
men, the leaves represented as without crenu-
late margins. 1, lateral sepal; 2, labellum;
3, pollinia; 4, petal. All the parts much en-
larged, and drawn with the aid of the camera
lucida.

[ 45 ]

EPIPACTIS DOLABRIPETALA

Epipactis dolabripetala Ames Orcuipace&, Fase. 1. p. 262
(1908).

Related to E. striata (Reichb. f.) A. A. Eaton. Plant erect or
ascending, 3 dm. high from an elongated creeping thickened
rhizome. Leaves about 4 in number, approximate near the base
of the stem; /amina lanceolate, acute, 3-5 cm. long, 1.4—-2 cm.
wide; petiole slender at the base of the lamina, scarious, dilated
and sheathing where it joins the stem, 7-14 mm. long. Peduncle
slender, finely pubescent, clothed with 4 oblong acute bracts,
the lowermost of which are sheathing at base. Raceme somewhat
cylindraceous, rather loosely flowered, 7 cm. long; rhachis finely
pubescent. Floral bracts lanceolate, acuminate, acute, sparsely
hairy, equalling the sparsely hairy ovaries, or shorter than the
ovaries of the uppermost flowers. Lateral sepals 4.5 mm. long,
1-nerved, lanceolate. Upper sepal narrower than the laterals,
1-nerved, 4.5 mm. long. Petals dolabriform, 1-nerved, about
5 mm. long. Labellum 4.5 mm. long, ovate-lanceolate, slightly
saccate at base, with several minute, thickened airs within the
sac.

Mexico: Collected near San Cristobal in Chiapas, at an altitude ranging
between 7000 and 8800 ft., September 18, 1895, by E. W. Nelson (no.
$211). Type in U. S. National Herb.

The type is composed of a single specimen preserved in the
United States National Herbarium, from which the accompany-
ing illustration was prepared. In accordance with the view held
by A. A. Eaton,* I have adopted the generic name Epipactis of
Boehmer for those species which have been heretofore impro-
perly placed in the genus Goodyera of R. Brown.

* Proceedings of the Biological Society of Washington 21 : 63 (1908).
[ 44 ]

al

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.
wee

ry
cs

4

ORL I

1k
YX

3

3
EPIPACTIS
dolabripetala

A aise

ORCHIDACE

Pirate 39: Epipactis dolabripetala
Plant, natural size. 1, petal; 2, labellum; 3, la-
teral sepal. All the parts enlarged and drawn
from the type-specimen with the aid of the
camera lucida.

[ 45 ]

CHEIROSTYLIS OCTODACTYLA

Cheirostylis octodactyla Ames in Philipp. Journ. Sci. (Bot.)
2: 314 (1907).

“Related to C. Griffith Lindl. Plants rather stout in relation
to their height, 4-8 cm. tall, few-flowered. Leaves ovate-lanceo-
late, acute, 0.7-2 cm. long, 5-11 mm. wide, 5-6 mm. apart on
the stem. Petioles short, sheathing at base. Flowers one or two,
white, 1 cm. long, standing at right angles to the erect stem.
Lateral sepals united nearly to the apex, lanceolate, subacute,
8 mm. long. Upper sepal oblong-lanceolate, acute, somewhat
dilated near the base, 8 mm. long. Petals lightly adhering to the
upper sepal, linear spathulate, about 8 mm. long, 2 mm. wide
near the tip. Labellum linear-oblong, about 9 mm. long to the
tip of the slightly dilated 8-fingered apex, 2.5 mm. wide at base;
on each side a row of 7-8 sete. Digitate divisions of the apex
3 mm. long.” Ames, loc. cit.

At the base the lip is concave or lightly saccate, with a row
of blunt setz on each side. The column is short, with two erect
processes at the summit in addition to the rostellar arms.

PuiurrinE Istanps: C. octodactyla was collected at an altitude of 8200 ft.
on Mt. Halcon, Mindoro, on November 22, 1906, by E. D. Merrill (no.
5834).

[ 46 ]

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-CHEIROSTYLIS ae
octodact [a ~ fA fi

> X I Ve A
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ORCHIDACE

Prate 40: Cheirostylis octodactyla

Two plants, natural size. 1, petal; 2, labellum;
3, column. All the parts drawn, enlarged, from
a co-type with the aid of the camera lucida.

[ 47 ]

MASDEVALLIA TUBULIFLORA

Masdevallia tubuliflora Ames OrcuipacE&, Fase. 11. p. 265
(1908).

Allied with M. floribunda Lindl. Secondary stems erect or
obliquely ascending, 1 cm. long. Leaf oblanceolate, obtuse, mi-
nutely bidentate, coriaceous, 3-10 cm. long, 9-11 mm. wide
above the middle. Scape very slender, about 7 cm. long. Calyx
about 12 mm. long to the tip of the dorsal lobe, 8 mm. long to
the base of the dorsal lobe; dateral lobes 6—7 mm. long, 3-nerved,
faleate-lanceolate ; dorsal lobe linear, fleshy, 4-5 mm. long. Petals
linear-lanceolate, with a small curved apicule or tooth on the
anterior margin, l-nerved, 4 mm. long. Labellum 4 mm. long,
linear, subacute or obtuse, cordate and somewhat thickened at
the base, lamellate above the middle, the lamella rounded,
short and thin. Column 3.5 mm. long.

Guatemata: At an alt. of 350 m., Depart. Alta Verapaz, H. von Tuerck-
heim (no. 512). Type in herb. Ames (no. 7339).

In John Donnell Smith’s distribution of Guatemalan plants
Masdevallia tubuliflora bears the number 8296. Up to the pre-
sent time I have been unable to identify my material with any
known species of the genus, although I have made careful com-
parisons with the specimens in the herbaria at the Royal Gar-
dens, Kew, and the British Museum of Natural History.

[ 48 ]

MASDEALLIA ane. lie, an

ORCHIDACE

Piate 41: Masdevallia tubuliflora
Plant, natural size, drawn from the type.
1, petal; 2, labellum. These parts much en-
larged and drawn with the aid of the camera
lucida.

[ 49 ]

MASDEVALLIA TUERCKHEIMII

Masdevallia Tuerckheimii Ames Orcuipace&, Fase. 11. p.
265 (1908).

Allied with M. Rolfeana Krinzl. Secondary stems erect, sheathed
by tubular scarious bracts when young. Leaf coriaceous, 6-10 cm.
long, oblanceolate or spathulate, attenuated below into a slen-
der petiole, obtuse, minutely tridentate with a conspicuous me-
dian nerve. Peduncle ascending, subfiliform, up to 5 cm. long,
bearing two rather large flowers, only one of which is open
at a time. Bracts erect, scarious, tubular. Calyx about 1.5 cm.
long, subcoriaceous, tubular below, 3-lobed above, the lobes
terminating in slender filamentous tails. Lateral lobes ovate,
3-nerved, 1.7 cm. long, the tails 3 mm. long. Dorsal lobe sub-
rotundate, 3-nerved, 19 mm. long, the tail longer than that of
each lateral lobe. Petals linear-oblong, 5 mm. long, 1.5 mm.
wide, truncate at the apex, apiculate or retuse and minutely
unidentate, with a protuberance at the middle on the anterior
margin. Labellum linear-oblong, cordate at base, obtuse, bila-
mellate. Column fleshy, about as long as the petals.

Guatemata: Alt. 350 m., Cubilquitz, Depart. Alta Verapaz, August, 1903,
H. von Tuerckheim (no. 1 464). Type no. 5832 in herb. Ames.

The type of M. Tuerckheimi is represented by a single speci-
men, from which the accompanying plate has been prepared.

[ 50 |

= st
nei el ? : 3

en

MASDEMULLIA
Powe ey

eee
c/uere

waa

ORCHIDACE

Puate 42: Masdevallia Tuerckheimii

1, petal; 2, labellum. Both petal and labellum
drawn, enlarged, with the aid of the camera
lucida.

[ 51 ]

PHREATIA PROREPENS

Phreatia prorepens Reichb. f. Otia bot. Hamb. 54 (1878) in
syn. and Xen. Orch. 3: 81, in syn.; Ames in Philipp. Journ. Sci.
(Bot.) 2: 882 (1907); OrcH1DAcEz#, Fasc. 11. p. 205 (1908). —
Eria prorepens Reichb. f. Otia bot. Hamb. loc. cit. and Xen.
Orch. loc. cit.

The specimen in the Gray Herbarium, determined by Reichen-
bach, has leaves 5.5-6.7 em. long, 7-8 mm. wide. The scape is
longer than the leaves, very slender, with about 5 sheathing
aristate-pointed bracts, 5-7 mm. long. Perianth about 2 mm.
long. These measurements agree almost perfectly with the spe-
cimen collected on Mt. Halcon, Mindoro, Philippine Islands,
from which the accompanying etching was prepared. The Gray
Herbarium specimen, which was collected in the Philippines by
the Wilkes Expedition, was among the novelties which Reichen-
bach described in Otia botanica Hamburgensia, in 1878. As
many of these are known to botanists only through the original
descriptions, the accompanying plate should prove a welcome
addition to the illustrations of obscure or little known orchid

species.

[ 52 ]

ee =

G ch
y, PA ee me SUIMAlad

ORCHIDACEA

Puate 43: Phreatia prorepens
The plate has been prepared from material
collected on Mt. Halcon, Mindoro, Philippine
Islands. Plant, natural size. 1, flower; 2, label-
lum; 3, lateral sepal; 4, petal; 5, upper sepal.
All parts drawn enlarged with the aid of the
camera lucida.

[ 53 |

BULBOPHYLLUM ALAGENSKE, B. HALCONENSE,
B. PLEUROTHALLOIDES

Bulbophyllum (§ Monanthaparva) alagense Ames in Philipp.
Journ. Sci. (Bot.) 2: 833 (1907).

Rhizome slender, creeping. Pseudobulbs approximate to each
other or sometimes 2 cm. apart, pyriform, 4-6 mm. long, nar-
rowed above, at base 3-4 mm. in diameter. Leaves ovate, api-
culate, 1.2-2 cm. long, 4-9 mm. wide; apicule 0.75 mm. long,
awn-like. Scape very slender, filiform, exceeding the pseudo-
bulbs, 8-11 mm. long, sheathed at base by a tubular truncate
1-2 mm. long bract. Flower solitary, pale yellow, nearly white.
Pedicel slender, graceful, subtended by a loose tubular obliquely
truncate apiculate 2 mm. long bract, which is dilated above.
Sepals triangular-lanceolate, 5-7 mm. long, caudate-tipped, the
tails about 4 mm. long. Petals minute, about 2 mm. long, spath-
ulate, acute. Labellum about 1.5 mm. long, strongly curved,
3-lobed; lateral lobes erect, half-round, when spread out form-
ing an orbicular plate, 1 mm. long, 1 mm. wide; middle lobe
fleshy, oblong, obtuse, about 1 mm. long. Column minute with
blunt wings.

PuitirrinE Istanps: On mossy branches overhanging the water along the
Alag River, Mindoro, at 1250 ft. alt., November 12, 1906, E. D. Merrill
(no. 5494).

Bulbophyllum (§Monanthaparva) halconense Ames in Phi-
lipp. Journ. Sci. (Bot.) 2: 334 (1907).

« Phizome thread-like, less than 1 mm. thick. Pseudobulbs 1-3 em.
apart, round-pyriform when mature, rugose when dry, about
5 mm. long, about 4 mm. in diameter at base. Leaves narrowly

[ 54 ]

ORCHIDACEA

elliptic-oblong, very fleshy (not apiculate), 1.5-2.5 cm. long,
4-6 mm. wide, acute, contracted into a very slender petiole.
Scape exceeding the pseudobulbs, filiform, 1.5-3 em. long,
sheathed at base. Flower solitary, relatively large. Pedicel fili-
form, subtended by a tubular obliquely truncate apiculate
bract dilated at its mouth. Lateral sepals narrowly lanceolate,
caudate-tipped, 12-14 mm. long, about 3 mm. wide near the
base. Upper sepal similar to the laterals, 12-14 mm. long, cau-
date-tipped. Petals ovate, acute, 5 mm. long, 2.5 mm. wide. La-
bellum lanceolate from a cordate base, acute, dilated at the
middle 3.5-4 mm. long, 2 mm. wide. (From dried specimens it
appears to have been strongly convex in life.) Colwmn short with
a minute tooth in front at about the middle.”— Ames, loc. cit.

Puiirrine Istanps: On trees in ridge forest, flowers dark purple, at
4500-6800 ft. alt. on Mt. Halcon, Mindoro, November 16, 1906, E. D.
Merrill (no. 5832). On the same sheet with the type is a small species of
the Monanthaparva section with much smaller flowers and shorter scapes.

Bulbophyllum (§ Monanthaparva) Pleurothalloides Ames in
Philipp. Journ. Sct. (Bot.) 2: 835 (1907).

“‘Rhizome obscure. Pseudobulbs 3 mm. long, much depressed,
forming a chain. Leaves about 1 cm. long, 2-4 mm. wide, ob-
lanceolate to spathulate, obtuse, minutely apiculate, contracted
below into a slender petiole. Scapes filiform, elongated, exceed-
ing the leaves, 3 cm. long, with scarious sheaths at base, and
with g tubular obliquely truncate bract subtending the solitary,
minute, brownish yellow flower. Lateral sepals lanceolate, acute,
about 4 mm. long, 2.5 mm. wide, 3-nerved. Upper sepal similar
and equal to the laterals. Petals lanceolate, 2 mm. long, 0.75 mm.
wide. Labellum lanceolate-cordate, obtuse or subsagittate, 2 mm.

[ 55 |

ORCHIDACE

long, 1 mm. wide at base, about 0.5 mm. wide near the tip. Col-
umn 1 mm. long.” Ames, loc. cit.

PuittrPrveE Istanps: On mossy trunks of trees at 4500 ft. alt. on Mt. Hal-
con, Mindoro, November 14, 1906, E. D. Merrill (no. 6128).

In habit B. Pleurothalloides is allied to B. cernuum (Blume)
Lindl., but has very different leaves. The general aspect of the
plant when in flower recalls some species of Pleurothallis.

The three Bulbophyllum species which are illustrated in the
accompanying plate were collected by Elmer D. Merrill, in No-
vember, 1906, during the ascent of Mt. Halcon, one of the loft-
iest summits in the Philippine Islands. While making thi ascent
more than one hundred orchid species were discovered by Mer-
rill, many of them novelties. These were dealt with in my paper
entitled Orchidacee Halconenses, which appeared in July, 1907,
in the second volume of the Philippine Journal of Science. Among
the Bulbophyllums collected, the three here figured I have been
unable to identify with any known species. They belong to the
interesting, rather large and puzzling section which Ridley desig-
nated by the name Monanthaparva, in allusion to the smallness
of the vegetative parts and the relatively small solitary flower
on a slender scape. In the habital illustration of B. Pleurothal-
loides (11) the contiguous bulbs, which form a rhizome-like chain,
are well shown.

bITATT iv

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—

ORCHIDACEA

PiaTE 44: Bulbophyllum species

I. B. alagense, natural size. A, flower; a, la-
bellum. II. B. Pleurothalloides, natural size.
B, flower; b, labellum. III. RB. halconense, na-
tural size. C, labellum and column; c, labellum.
All the analytical parts, as well as the sepa-
rated flowers, have been drawn, enlarged, with
the aid of the camera lucida, from co-types.

[ 57 J

BULBOPHYLLUM MINDORENSE

Bulbophyllum (§Monanthaparva) mindorense Ames in Pii-
lipp. Journ. Sci. (Bot.) 2: 834 (1907).

Rhizome inconspicuous, concealed by the depressed 3-4 mm.
long pseudobulbs, which form a continuous sometimes branch-
ing chain closely appressed to the bark of trees on which the
species is epiphytic. Leaves lanceolate, acute, 6-8 mm. long, up
to 3 mm. wide, shortly petiolate. Scapes filiform, up to 4 cm.
long. Flower straw-yellow, relatively large, with a very long pe-
dicel, apparently without a subtending bract, the pedicel being
fully 5 mm. long. Floral bract tubular, obliquely truncate. La-
teral sepals narrowly lanceolate, acute, 3-nerved, 8 mm. long,
2 mm. wide below the middle, margin minutely ciliolate. Upper
sepal similar to the laterals, about equally long. Petals linear-ob-
long, subspathulate, acute, 1-nerved, 3 mm. long, about 0.75 mm.
wide. Labellum linear-lanceolate, 3.5 mm. long, about 1 mm.
wide. Column 1 mm. long, with a tooth or protuberance in front
near the base or below the middle.

PuiirrinE Istanps: Epiphyte in deep shaded ravine, at 3000 ft. alt., on
Mt. Halcon, Mindoro, November 27, 1906, H. D. Merrill (no. 5796).

In the description the lateral sepals are said to be ciliolate on
the margin. This statement refers to the minute papillose cells
which are visible under the high powers of the dissecting micro-
scope. The labellum, as shown in the drawing, is somewhat round-
ish at the base, and lightly concave, in general outline linear-
lanceolate, and 3-nerved, each of the lateral nerves giving off
a branch which runs nearly to the apex of the labellum. The
pseudobulbs are as in Bulbophyllum cernuum (Blume) Lindl.

[ 58 |

ORCHIDACEAE

Piate 45: Bulbophyllum mindorense
Plant, natural size, drawn from a co-type.
1, lateral sepal; 2, labellum; 3, upper sepal;
4, petal. All parts drawn, enlarged, with the
aid of the camera lucida.

[ 59 |

DENDROBIUM ORNITHOFLORUM

Dendrobium (§Grastidium) ornithoflorum sp. nov. Herba
multum ramosa. Caules teretes, +6 dm. longi, ascendentes
vel erecti, graciles. Hola lineari-lanceolata, acuminata, acuta,
2.5-10 em. longa, 4-5 mm. lata. Pedunculus 10-12 mm. longus.
Pedicelli 14 mm. longi. Flores geminati. Sepala lateraha tri-
angulari-lanceolata, acuta, subcaudata, circa 1.6 cm. longa. Se-
palum dorsale lineari-lanceolatum, circa 1.6 cm. longum, 3 mm.
latum. Petala similia, angustiora, 3-nervia. Labellum +1.5 cm.
longum, 3-lobatum ; loli laterales subacuti, subfalcati; lobus ter-
minals 8 mm. longus, 6 mm. latus, acuminatus, acutus, margine
serrulato; discus 3-carinatus.

PuitirrineE Istanps: Flowers yellowish white, at 5700 ft. alt.on Mt. Bliss,
Province of Misamis, Mindanao, May 25, 1906, Major E. A. Mearns & W. I.
Hutchinson (no. 4727). Specimens in herb. Bureau of Science, Manila, and
in herb. Ames.

D. ornithoflorum is a graceful, profusely branched epiphyte of
the Grastidium section of the genus Dendrobium, allied with
D. acuminatissimum Lindl. The younger branches are clothed
with the closely appressed tubular sheaths formed by the leaves;
the older ones are naked except for the fibrous remains of the
withered sheaths at the internodes, are polished yellow, and are
rather rigid. From the younger branches the flowers arise in
pairs. The peduncle is sheathed at base by a compressed bract.
On none of the specimens observed were the flowers open, and
it is quite probable that they never widely expand. The median
keel on the disc of the labellum extends to the tip of the column
foot ; near its apex two shorter keels arise, one on each side. All
of the keels are somewhat toothed or crenulate near the distal
end. Scattered over the upper surface of the labellum minute

[ 60 ]

ORCHIDACE#

papilla appear, mainly along the nerves. The specific name al-
ludes to the bird-like aspect of the flowers.

[ 61 ]

ORCHIDACEA

Puiate 46: Dendrobium ornithoflorum

Part of a plant, much reduced. In the lower
right-hand corner the bract subtending the
peduncle is shown, enlarged; in the lower left-
hand corner a flower and the pollen masses are
represented, enlarged. Behind the labellum of
the enlarged flower, a petal and lateral sepal °
are shown, adherent.

[ 62 |

orn ithotlo rues oo eee

DENDROBIUM

PL 46

eee a &

CAS DES CBS. 20 Rule

CESTICHIS HALCONENSIS

Cestichis (§ Laxiflore) halconensis Ames in Philipp. Journ.
Sci. (Bot.) 2: 821 (1907).

«A very distinct bifoliate species, about 3 dm. high. Pseudobulbs
about 1.5 em. long, somewhat cylindrical, covered by 4 or 5
distichous, acute sheaths when immature. Leaves oblong-lanceo-
late, very acute, 15-20 cm. or more long, about 3 cm. wide, con-
tracted into a winged petiole. Peduncle graceful, strongly bialate,
exceeding the leaves. Lowermost bracts elongated, linear-acute,
1-1.5 cm. long, those of the inflorescence about half as long as
the slender pedicels. Pedicels of the lowermost flowers 1.5 cm.
long. Inflorescence loosely many-flowered. Flowers grass-green,
turning yellow with age. Lateral sepals oblong, very obtuse,
5 mm. long, 2 mm. wide. Upper sepal similar to the laterals.
Petals linear, 5 mm. long, about 1 mm. wide. Labellum 5.5 mm.
long, suborbicular from an oblong-cuneate base; distal margin
crenulate and obscurely blunt-mucronate; in the middle of the
claw is a fleshy subcucullate callus. Column 3 mm. long, rather
slender, strongly arcuate near the summit.” — Ames, loc. cit.

PuitirrInE Istanps: Terrestrial in ridge forest at 1200-2200 ft. alt. on
Mt. Halcon, Mindoro, November 8, 1906, E. D. Merrill (no. 5799).

[ 63 ]

ORCHIDACE

Puate 47: Cestichis halconensis
1, labellum; 2, petal; 3, upper sepal; 4, lateral
sepal; 5, floral bract; 6, flower. Flower and parts
enlarged, drawn from a co-type with the aid of
the camera lucida.

[ 64 ]

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CESTICHIS
Vay OR tape Cae [

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big Peng tein

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~ ate d re ae

OBERONIA McGREGORII

Oberonia McGregorii Ames in Philipp. Journ. Sci. (Bot.) 2:
321 (1907).
“Closely allied with O. ciliolata Hook. f. Plants caulescent,
when in flower about 12 cm. high from base of stem to tip of the
densely flowered cylindrical spike. Leaves distichous, obliquely
spreading from below the middle, ensiform, about 4 cm. long,
acute. Peduncle relatively stout, bracteate, minutely scurfy-
pubescent. Bracts linear-lanceolate, acuminate, acute, ciliate-
pubescent, about 2 mm. long, exceeding the pedicels of the
flowers. Ovaries finely pubescent. Lateral sepals ovate-lanceo-
late, or triangular-lanceolate, acute, ciliolate, 0.75 mm. long.
Upper sepal nearly elliptical, subobtuse, 0.75 mm. long, ciliolate.
Petals linear-oblong, rounded at the tip, much shorter and nar-
rower than the sepals, minutely ciliolate. Labellum pandurate
(or oblong, constricted at the middle), coarsely several-toothed
at the dilated tip, 0.75 mm. long, slightly auriculate at base.” —
Ames, loc. cit.

PuiviprinE Istanps: Only one specimen seen, found on a prostrate tree,
Balete, Baco River, Mindoro, April 23, 1905, R. C. McGregor (no. 291).

The accompanying illustration is reproduced from a fragment
of the type preserved in my herbarium.

[ 65 ]

ORCHIDACEA

Piate 48: Oberonia McGregori

1, flower; 2, lateral sepal; 3, petal; 4, floral
bract; 5, bud. All parts drawn, enlarged, with
the aid of the camera lucida.

[ 66 ]

OBERONIA

WM e rego rit See
F

OBERONIA MINDORENSIS

Oberonia mindorensis Ames in Philipp. Journ. Sci. (Bot.) 2:
322 (1907).

«Allied to O. Aporophylla Reichb. f. Plant caulescent, 1.5-4 dm.
or more tall from base of stem to tip of elongated, slender,
densely flowered spike. Leaves distichous, 5-10 cm. or more
long, acute or subobtuse, obliquely ascending, upper half or
two-thirds free. Spike 1-2.5 dm. long, about 5 mm. in diameter,
somewhat scurfy-pubescent. Bracts linear, about 2 mm. long.
Flowers minute, greenish. Lateral sepals elliptic-ovate or ovate,
1 mm. long. Upper sepal similar to the laterals. Petals linear,
obtuse, 0.75 mm. long. Labellum 1 mm. long, 3-lobed; middle
lobe emarginate, about 1 mm. wide; lateral lobes not very
conspicuous, prolonged slightly behind the column. In general
outline the Jabellum is subpanduriform, emarginate, or equally
4-lobed.” — Ames, loc. cit.

PuirrinE Istanps: Epiphyte, at 1200 ft. alt., along the Alag River,
Mindoro, November, 1906, #. D. Merrill (no. 5613).

The illustration is a restoration from a co-type preserved in my
herbarium. The flowering plant is representative of one of the
smallest of the specimens collected by Merrill, while the leaves
in the background exhibit one of the largest.

[ 67 |

ORCHIDACE

Piate 49: Oberonia mindorensis
I. Flowering plant, natural size. II. Fragment
of a plant to exhibit range of variation in size.
1, flower; 2, upper sepal; 3, petal; 4, lateral
sepal. All parts drawn, enlarged, with the aid
of the camera lucida.

[ 68 ]

Pb 49 i,
OBERONIA *
yn pie 8 rernsts mes

f ELAO STARS 5)

ANGRACUM PHILIPPINENSE

Angrecum philippinense Ames in Philipp. Journ. Sct. (Bot.)
2: 836 (1907); OrcHIDACE, Fasc. 1. p. 246 (1908).

Plant 3-6 cm. high. Roots very fleshy. Leaves elliptic-oblong,
obtuse, 2-5.5 cm. long, 0.6—1.4 cm. wide, on contracted stems.
Peduncle fleshy, stout, conspicuously winged, few-flowered,
1.5-4 cm. long. Bracts rigid, fleshy, 5 mm. long, conduplicate,
triangular, acute. Pedicels elongated, about 2.5 cm. long, includ-
ing the ovary. Flowers large, white, odorless. Lateral sepals el-
liptic, rounded and very obtuse at the apex, about 2.2 cm. long,
about 1.5 cm. wide. Upper sepal similar to the petals, cuneate
at base, about 2.2 cm. long, 1.4-1.5 em. wide. Petals broadly
spathulate, about 2.2 cm. long, 1.5 cm. wide, very obtuse. La-
bellum 3-lobed; middle lobe oblong, rounded at the tip, 9 mm.
long, about 7.5 mm. wide; lateral lobes somewhat similar to the
middle lobe, but shorter, 4-5 mm. long, 6.5 mm. wide at base.
Spur slender, 3.5 cm. long. Column about 7 mm. long, rather
stout. Pollinia globose with a single stipe.
, Purine Istanps: Epiphyte at about 2500 ft. alt. on forested slopes
of Mt. Halcon, Mindoro, November 28, 1906, £. D. Merrill (no. 5698).
The description given above is, with the exception of several
minor changes, taken from the Philippine Journal of Science.
Angrecum philippinense is the first species of the genus An-
grecum recorded as a native of the Philippine Islands. The
flowers are white with a yellow stripe on the labellum, and in
relation to the size of the plant which bears them extraordinarily
large. When dry they retain their white color and become some-
what translucent. The leaves when dry retain the coriaceous
texture characteristic of their fresh state and become extremely

rugose. Each of the specimens which constitute the co-type, from
[ 69 |

ORCHIDACEA

which the accompanying plate was prepared, bears about three
distichous leaves. In the illustration the vegetative parts were
prepared from a co-type in my herbarium and the flower from
the type specimen deposited in the herbarium of the Bureau of
Science at Manila.

The genus Angreecum of Thouars, as at present understood, is
confined to those species which have a single stipe to the pollinia,
a character which, according to R. A. Rolfe in Dyer’s Flora of
Tropical Africa (7: 133), is the only absolute one by which An-
greecum can be separated from the genera allied to it. In Listro-
stachys Reichb. f., the globose pollinia are situated upon a pair
of slender stipes distinct from each other or only united at base,
while in Mystacidium Lindl.,the pollinia are situated upon a pair
of slender stipes which are attached to separate oblong or squam-

iform glands.

[ 70 ]

‘ Cel a
ay aac pata aa

PL. 50

ws mes

A
SS

~~ e
Jay ,
% a

| ANGRZ CUM Philippinense

ORCHIDACE

PiaTteE 50: Angraecum philippinense

Plant, natural size. In the right-hand lower
corner the labellum and spur are shown.

[71 ]

SPIRANTHES SALTENSIS

Spiranthes saltensis Ames Orcuipace#, Fase. 1. p. 258
(1908).

The type specimen is destitute of foliage and appears to be
hysteranthous. Plant about 32 cm. tall, clothed by 6 or more
tubular acute rather loosely appressed bracts. Stem pubescent.
Flowers 8, large, nodding. Floral bracts exceeding the ovary,
ovate-lanceolate, acuminate, acute, when dry conspicuously
striate-nerved, 1.1-1.8 cm. long. Ovary turbinate, pubescent,
suberect. Perianth strongly deflexed. Lateral sepals linear-ob-
long, acute, 3-nerved, 1.7 cm. long, about 2.5 mm. wide. Upper
sepal linear-oblong, 3-nerved, 1.8-1.9 cm. long, broader at the
base than the lateral sepals. Petals falciform, acute, 1.7 em. long.
Labellum panduriform, ecallose, shortly clawed, somewhat apic-
ulate, 3-nerved, with the lateral nerves branched, 1.7 cm. long.

Mexico: Collected near El Salto, State of Durango, at 8000-8700 ft. alt.,
on July 12, 1898, by E. W. Nelson (no. 4545).

This very distinct species is nearly allied with Spiranthes
Llaveana Lindl. It belongs to a puzzling group of plants which
appear to form a connecting series between the genera Spiran-
thes L. C. Rich. and Sauroglossum Lindl. The species of this
series are rarely found complete in herbaria on account of the
usual absence, during anthesis, of basal leaves, consequently
descriptions of the foliage are likely to be wanting. The accom-
panying plate was prepared from the type specimen in the United
States National Herbarium.

S. eriophora Robinson & Greenman, another Mexican spe-
cies, which is a near ally of S. saltensis, is characterized by elon-
gated tubular sheaths which entirely conceal the stem, and by
exceptionally long floral bracts which exceed the flowers.

[ 72 |

23h. va AAV
pene shear

SPiRCAN THES

Se fies as eee

Ses

ORCHIDACE

PiaTeE 51: Spiranthes saltensis
1, labellum; 2, petal; 3, lateral sepal; 4, upper
sepal. All the parts natural size, the sepals,
petal, and labellum having been traced through
transparent paper on the stage of a dissecting-
microscope.

[ 73 ]

STELIS GRACILIS
Stelis gracilis Ames Orcu1pace&, Fase. 1. p. 266 (1908).

Secondary stems erect or ascending, 2-4 cm. long, clothed by
elongated ancipitous obliquely truncate acute sheaths, which are
conspicuously nervose when dry. Leaves coriaceous, linear-ob-
long, bidentate at the tip, 6-10 cm. long, 7-10 mm. wide above
the middle, tapering at base into slender canaliculate petioles.
Peduncle longer than the leaf, 10 cm. long, filiform, graceful,
clothed at intervals with tubular obliquely truncate aristate-
apiculate bracts, about 1 mm. long. Pedicels graceful, slender,
exceeding the scale-like floral bracts. Flowers minute. Sepals
similar, ovate, 3-nerved, 2 mm. long, 1.5 mm. wide. Petals
cuneate, fleshy, thickened at the apex, about 0.5 mm. long,
1 mm. wide near the tip, 1-nerved. Labellum unguiculate, sub-
equal to the petals, at about the middle obscurely bicallose, the
calli approximate or confluent. Column short, the margin den-
tate.

Guatemata: Cubilquitz, Depart. Alta Verapaz, at 350 m. alt., June, 1900,
H. von Tuerckheim (no. 7681).

In habit Stels gracilis resembles S. intermedia Poepp. & Endl.
The callus on the labellum appears to be variable and is so mi-
nute that its presence is not readily detected.

The genus Stelis, of Swartz, is systematically a most confusing
one; consequently it is very inadequately understood and as a
rule very poorly represented by carefully determined specimens
in herbaria. Until an exhaustive comparative study of all avail-
able material has been made it must prove a fruitless task to
identify with surety any but the better known and more common
species of the genus.

[ 74 ]

Ps ie a S_yracilis an

f
J

S¥ 52

ORCHIDACE

Puate 52: Stelis gracilis
Plant, natural size, reproduced from a part of
the type. 1, flower; 2, upper sepal; 3, lateral
sepal; 4, petal; 5, column; 6, labellum. All parts
drawn, enlarged, with the aid of the camera
lucida.

[ 75 ]

STELIS COMPACTA

Stelis compacta sp. nov. Planta pusilla, czspitosa, + 2 cm.
alta. Caules secondarui graciles, + 5 mm. longi, 1-foliati. Lo-
lium oblanceolatum, apiculatum, coriaceum, 1—2.7 cm. longum,
+2 mm. latum, carina prominenti dorsali media. Pedwnculus
gracilis, filiformis, 3 cm. longus, foliis longior. Bractew tubu-
lares, ad apicem dilatate, oblique truncate. Bractee inflores-
centie squamiformes, pedicellis breviores, apiculate. Sepala
lateralia late ovata, 1 mm. longa, circa 1 mm. lata. Sepalwm
dorsale \ateralibus simile sed angustius. Petala oblanceolata vel
spathulata, obtusa, uninervia, circa 1 mm. longa. Labellum cras-
sum, ovato-lanceolatum, acuminatum, obtusum vel subacutum,
in alabastro acutum, 1 mm. longum. Colwmna erecta, crassius-
cula, apoda, utroque ad apicem ala rotundata. Pollinia 2, sub-
globosa vel pyriformia, minutissima.

Guatemata: Cubilquitz, Depart. Alta Verapaz, at 350 m. alt., May, 1901,
H. von Tuerckheim (no. 7991).

This compact little plant which, with some hesitation, is here
referred to the genus Stelis Swartz, is most nearly allied with
Stelis lancilabris Reichb. f. (Beitrdge zu emer Orchideenkunde
Central-Amerika’s, 94, tab. 8, 11. 3-5, 1866), which it closely re-
sembles in habit and with which it agrees in having membra-
naceous, petals devoid of thickening at the apical margin. Ac-
cording to Lindley’s tentative classification of the genus in
Folia Orchidacea, Stelis compacta belongs in the section Mono-
stachye brachypode, although in its floral parts it resembles
none of the well-known species of that extremely artificial group.
The petals in outline bear no resemblance to the labellum, and
in this respect are unusual for the genus. The floral bracts are
obliquely truncate and clasp the slender rhachis. The apicules

[ 76 ]

ORCHIDACEM

which terminate the narrow leathery leaves are bristle-like and
about 0.5 mm. in length. The type specimen is made up of four
well-developed plants and several fragments. ;

While the generic characters of this plant may have been
incorrectly diagnosed on account of its unusual floral conforma-
tion, its affinities with the species of Brachionidium Lindl. (a
nearly allied genus) are not clear, and its agreement with the
generic characters of Pleurothallis R. Brown—a somewhat
heterogeneous group—is equivocal. Except for the structure of
the column, one might readily place the plant in Brachionidium
on the strength of the brief characterization published by Lind-
ley in Folia Orchidacea. For the present, at least, I prefer to place
it in the genus Stelis because of its agreement with Reichen-
bach’s Stelis lancilabris and its lack of agreement with any of
the species known to me in the other genera mentioned. As
R. A. Rolfe has stated (Memoirs of the Torrey Botanical Club, 4:
261), the groups designated by Lindley as the Monostachyz
and Polystachye cannot be retained, as the traits which distin-
guish them are not constant even for the same species.

ar |

ORCHIDACEA#

Priate 53: Stelis compacta

Plant, natural size, reconstructed from the type
in herb. Ames. The single flower was drawn,
enlarged, with the aid of the camera lucida.

[ 78 ]

*
2% aes

-

pi Hib:

}

re ™%* Oy {
‘ PP > Wht Geto

ERYTHRODES MERRILLII

Erythrodes Merrillii comb. nov.—Herpysma Merrillii Ames
in Philipp. Journ. Sci. (Bot.) 2: 318 (1907).

Plant 1-8 dm. high. Rhizome creeping. Leaves about 5, ovate-
lanceolate, shortly acuminate, acute, rounded at the base, 5-7 em.
long, about 3 cm. wide, passing into slender petioles. Base of the
petioles scarious, sheathing the stem. Peduncle sparsely pubes-
cent, with ‘about 3 lanceolate scarious about 1 cm. long bracts
below the loose racemose inflorescence. Floral bracts linear-
lanceolate, acute, scarious, about 1 cm. long. Mlowers white.
Lateral sepals linear-oblong, about 1.2 em. long, 2 mm. wide,
concave, lightly carinate, cucullate with several hairs at the tip.
Upper sepal similar to the laterals, broader, adhering lightly to
the petals. Petals 1.2 cm. long, spathulate, obtuse, linear be-
low the middle, free from each other at the base, cohering above
the middle by their inner margins. Labellum adhering to the
column, produced at base into a rather slender spur, which is
bilobed at the tip and which protrudes between the lateral sepals;
free portion narrow, a little dilated beyond the column, then
4-lobed; proximal lobes divaricate, oblong, obtuse, 1.5 mm. long,
1 mm. wide, separated from the distal lobes by a short 1 mm.
long claw or isthmus; distal lobes divaricate, 1.5 mm. long, about
2 mm. wide, margin irregular; on the disc two thin longitudinal
lamellee, free at the obliquely truncate apex. Two wart-like calli
are situated in the spur near its base, on the dorsal wall. From
tip of spur to apex of labellum 1.5 cm.

Puiirrrne Istanps: Terrestrial in damp ravine, by small stream on Mt.

-Halcon, Mindoro, November 9, 1906, E. D. Merrill (no. 5836).

Since the publication of the original description of this species

further studies into its generic characters have convinced me
[ 79 ]

ORCHIDACEA

that it is more properly a species of Erythrodes Blume, than of
Herpysma Lindl., differing from all the other species of the
former genus, of which I have any knowledge, in the lamelle of
the labellum and in the two wart-like excrescences within the
didymous sac or spur. Herpysma, it is true, has a bilamellate
labellum, which, as in Erythrodes, is adherent to the gynoste-
mium, but all the other characters of the species under consider-
ation indicate clear affinity with the latter genus.

As now understood Erythrodes receives the Old World spe-
cies placed by some authors in Physurus L. C. Rich. There is a
marked difference between these genera, and it seems desirable
to restrict Physurus to the western hemisphere (at least until
a more decided agreement between it and Erythrodes is discov-
ered), on the basis that geographical limits, when accompanied
by strongly pronounced structural differences, are quite reliable
in the differentiation of genera.

In Nachtrige zur Flora der deutschen Schutzgebiete in der
Siidsee (Schumann & Lauterbach), Dr. Rudolf Schlechter dis-
cusses briefly the relationship between Erythrodes and Physurus,
and in conformity with his views places in Erythrodes the follow-
ing species: Physurus bracteatus Blume, P. Blume Lindl., P.
viridiflorus Lindl., and P. Henryi Rolfe; and he describes and
figures two newspecies from Kaiser-Wilhelmsland, namely, Ery-
throdes papuana and E. purpurascens. J. J. Smith in Bulletin du
Departement de l Agriculture aux Indes Néerlandaises, in his
first supplement to Die Orchideen von Java, agrees with Schlech-
ter’s views and places the Javan Physurus humilis Blume in Ery-
throdes. The didymous sac or spur of the labellum of the Old
World species is a constant differentiating character, according
to Schlechter’s studies never occurring in the species of Physurus
of the New World. Furthermore, the gynostemium is supposed

[ 80 ]

ORCHIDACE

to offer important differentiating characters, although these are
more or less relative in value and consequently of questionable
worth in a systematic arrangement of species in such a puzzling
group as the Physurez. In both the Spiranthez and Physurez
the dangers to a stable system of classification from excessive
segregation of genera are very great. Even the most careful
disposition of species in genera may be severely disturbed by
morphological exceptions. Whether or not convenience is sub-
served by the multiplication of genera in such groups as the
Spiranthez and Physuree, it is often quite evident that affinities
are frequently neglected.

[ 81 ]

ORCHIDACEH

PiateE 54: Erythrodes Merrillii

Plant, natural size. 1, petals; 2, basal portion
of the labellum showing the didymous tip of
the spur; 3, apical portion of the labellum,
showing the tips of the lamelle; 4, lateral se-
pal; 5, column. All parts drawn, enlarged, from
a co-type with the aid of the camera lucida.

[ 82 ]

ERY THRODES Merrill: go

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Ae

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¥

a arnat

. -- Te
oo A Nae al pat ig tO

ited 5

NEPHELAPHYLLUM MINDORENSE

Nephelaphyllum mindorense Ames in Philipp. Journ. Sci.
(Bot.) 2: 316 (1907).

“Closely allied to NW. pulchrum Blume. Plants about 2 dm. tall.
Rhizome creeping, slender, rooting at intervals. Stems purple.
Leaves with the under surface uniformly dark purple, upper
surface mottled, ovate-lanceolate, acuminate, acute, 8-10 cm.
long, 3-5.5 cm. wide near the base. Petioles relatively slender,
about 3 cm. long. Peduncles exceeding the leaves, clothed with
several scarious tubular acute sheaths. Inflorescence loosely few-
flowered. Bracts about 1 cm. long, linear, acute, scarious, some-
what shorter than the pedicels of the white flowers. Lateral
sepals linear, acute, 1-nerved, 9 mm. long, 1.5 mm. wide. Upper
sepal similar and equal to the laterals. Petals oblong, acute,
slightly broader above than below the middle, 1-nerved, about
8 mm. long, 3 mm. wide. Labellum suborbicular, entire, 9-10 mm.
long, 9-10 mm. wide, with 3 prominent converging /amellc near
the apex, which pass basally into the main nerves of the hairy
disc. Spur blunt, inflated, 4-5 mm. long.” — Ames, loc. cit.

PurrerinE Isianps: Terrestrial in humid forest at about 900 ft. alt. along
the Binabay River, Mindoro, November 2, 1906, E. D. Merrill (no. 5623).

[ 83 ]

ORCHIDACE

Prate 55: Nephelaphyllum mindorense
Plant, natural size, drawn from a co-type in
herb. Ames. 1, flower; 2, upper sepal; 3, lateral
sepal; 4, petal. In fig. 1 the labellum is shown
with its converging lamelle and blunt spur.
All parts drawn, enlarged, with the aid of the

camera lucida.

[ 84 ]

NEPHELAPHYLLUM

mindorense Ames

Ie \

ny Sih heute ,

Tat

“woe

ERIA HALCONENSIS

Eria (§Trichotosia) halconensis Ames in Philipp. Journ. Sci.
(Bot.) 2: 830 (1907).

“ Plant comparatively slender, about 5 dm. tall. Stems about
7 mm. in diameter near the base, tapering gradually upwards.
Leaves \inear-lanceolate, acuminate, acute, pubescent, about
1 dm. long, 7-11 mm. wide. Racemes leaf-opposed, shorter than
the leaves, about 5 cm. long, somewhat flexuose, densely cov-
ered with reddish yellow hairs. Bracts broadly ovate or sub-
orbicular, 4-6 mm. long, hairy, abruptly acuminate. Lateral
sepals triangular, externally hairy, subacute, 7 mm. long, about
4mm. wide at base. Upper sepal oblong, externally hairy. Petals
linear, subspathulate, tapering to a subacute or subobtuse apex,
6 mm. long, 1.5 mm. wide. Labellum 7 mm. long, linear-cuneate
at the base, dilated above, then constricted within 2 mm. of the
tip, 3-lobed; lateral lobes minute, obtuse, formed by the con-
striction; middle lobe subquadrate, apiculate, 3-4 mm. wide; disc
with a prominent mid-nerve. Mentum about 3 mm. long.”—
Ames, loc. cit.

PuiuirrinE Istanps: Epiphyte, flowers pink-purple, on exposed ridge at
4500 ft. alt. on Mt. Halcon, Mindoro, November 14, 1906, E. D. Merrill
(no. 5742).— Terrestrial, flowers pink-purple, odorless, on banks in mossy
forest at 6000 ft. alt. on Mt. Halcon, Mindoro, November 15, 1906, E. D.
Merrill (no. 5510) type.

In addition to the type, which was collected on November 15,
Merrill discovered a series of specimens which exhibit slight
differences from Eria halconensis. This series was referred to
E. halconensis in my paper on Merrill’s Mt. Halcon orchids,*
although the original description was drawn entirely from the

type. The plants of the series in question are smaller through-

* Philippine Journal of Science (Bot.) 2: 330 (1907).
[ 85 |

ORCHIDACEH

out than typical EZ. halconensis, one specimen in my herbarium
being only 23 em. high, with narrow leaves 4.5 to 7.5 cm. long
and with flowers 7 mm. long from the tip of the blunt men-
tum to the tips of the lateral sepals. The differences in the
floral conformation between the two series are too slight to war-
rant specific or even varietal distinction, and as the variation in
foliage, though great, is not uncommonly wide for species of the
Trichotosia section of the genus Eria, I have refrained from
placing upon it undue reliance.

[ 86 |

Go
: _

wv

ORCHIDACEA

Pruate 56: Eria halconensis

Plant, natural size, drawn from a co-type
(Merrill, no. 5510). 1, flower; 2, petal; 3, label-
lum; 4, upper sepal. All parts drawn, enlarged,
with the aid of the camera lucida.

[ 87 |

ERIA GRACILISCAPA

Eria (§ Hymeneria) graciliscapa Rolfe ex Ames ORcCHIDACEz,
Fasc. 1. p. 93 (1905) and Fase. 11. p. 193 (1908).

Roots copiously branched, finely hairy. Stems slender, terete,
11.5-19 em. long, sheathed by several tubular acute bracts.
Leaves 3-4, terminal, oblong-lanceolate, acute, nervose, scarcely
petiolate, 6-8.5 cm. long, 1.2-1.9 cm. wide. Peduncles axillary
near the summit of the stem, slender, many-flowered, 6—7 cm.
long. Bracts lanceolate, acute, scarious (in dried specimens),
+2 mm. long. Flowers white. Lateral sepals 5 mm. long, 1 mm.
wide, linear-lanceolate to oblong-lanceolate, subacute or obtuse,
3-nerved. Upper sepal similar to the laterals. Petals linear-lance-
olate, obtuse, subfalcate, about 3 mm. long. Labellum entire,
about 2 mm. long, ovate-lanceolate to lanceolate, 3-nerved, the
lateral nerves carinate. Column rather stout, about 1 mm. long.

PumirrinE Istanps: On Mt. Mariveles, Prov. of Bataan, Luzon, May,
1904, H. N. Whitford (no. 307).—Near the same locality it was collected on
May 22, 1904, by D. LeRoy Topping (no. 474), and on May 25, 1904, by
Thomas E. Borden (no. 795). Borden reports that his specimens bore white,
fragrant flowers and were gathered on mountain ridges at 1150 m. above
sea level.

In aspect L. graciliscapa recalls E. tenuifoha Ridley, a spe-
cies which has narrower leaves and broader floral segments. W hit-
ford says of the type that it was found both epiphytic and on
the ground, 3000 feet above sea level.

[ 88 ]

__ ee ULL
1) NN Co oa
(NNN COUN
. BSS

SS rue
ih q \\
RTE TANNA AIM

ORCHIDACEAE

PiateE 57: Eria graciliscapa
Plant, natural size, drawn from the co-type in
herb. Ames. 1, labellum; 2, petal; 3, upper
sepal; 4, lateral sepal, the margin rolled in. All
the parts, much enlarged, drawn with the aid of
the camera lucida.

[ 89 ]

LIPARIS SAUNDERSIANA

Liparis Saundersiana Reichb. f. in Gard. Chron. July 27,
1872, p. 1003; Ridley in Journ. Linn. Soc. 22: 274 (1886).

“Minuta, similis Liparidi Wendlandi; pseudobulbo ovato;
folus carnosulis geminis supra vaginam cordato oblongis acutis ;
pedunculo longiori trigono; racemo paucifloro, bracteis trian-
gulis angustis herbaceis ovaria pedicellata non sequantibus;
sepals triangulo ligulatis, summo trinervi, lateralibus uniner-
viis; ¢epalis lineari-filiformibus uninerviis; /abello basi juxta co-
lumnam sagittato oblongo apiculato seu obtuso, ciliato seu ecili-
ato; columna apice ampliata.”— Reichenbach f., loc. cit.

Plant 5-8 cm. or more high, bifoliate, pseudobulbous. Leaves
elliptic-oblong to ovate, one of the pair larger than the other; /a-
mina +1.5-2.5 em.long, +0.9-2 cm. wide; petiole about 1.5-2 cm.
long. Scape winged, much exceeding the leaves, rather slender,
naked below. Racemes rather loose, bearing from 6 to 10 or more
flowers. Floral bracts lanceolate, acute, about 5 mm. long. Pe-
dicel slender, exceeding the bracts, together with the ovary
about 7 mm. long. Lateral sepals oblong, 1-nerved, about 5 mm.
long. Upper sepal similar to the laterals. Petals linear, obtuse,
1-nerved, about 7 mm. long. Labellum ovate-cordate, about
7 mm. long, 5 mm. wide.

Jamaica: Cinchona, at 4900 ft. alt., January 12, 1907, Wm. Harris
(no. 9789).

In dried specimens the pedicels, labellum, and petals have the
appearance of having been madder-purple and the sepals green-
ish when fresh. Reichenbach suggests that Liparis Saundersiana
recalls in aspect some species of the Australian genus Cyrto-
stylis of R. Brown. It resembles distantly Cyrtostyls reniformis

R. Brown.
[ 90 ]

Ty <a are R Pinas
eee ee ee ee ee ee ee ee ee

bg ane
aren
Rei:

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a PARIS

peas neepuiana

Ka of

ORCHIDACEA

Prate 58: Liparis Saundersiana
Plant, natural size, drawn from a specimen col-
lected in January by William Harris. 1, petal;
2, upper sepal; 3, lateral sepal. On the right, a
flower drawn natural size.

[ 91 ]

LIPARIS CARDIOPHYLLA

Liparis cardiophylla sp. nov. Aff. L. neuroglosse Reichb. f.
et L. ramos Poepp. & Endl. Rhizoma repens. Pseudobulbi cy-
lindrati, 8 mm. longi. Folwm erectum; lamina ovato-cordata
vel suborbiculata, apiculata, membranacea, 2.5-3.9 cm. longa,
2.3-3.3 cm. lata, multinervia; petiolus ad basim vaginans,
2-2.5 cm. longus. Pedunculus alatus, +5 cm. longus, cum
racemo folia excedens. Bractee lanceolate, acute, +2.5 mm.
longe. Racemus pauciflorus, laxiflorus. Sepala lateralia mem-
branacea, 4 mm. longa, oblonga, uninervia. Sepalum dorsale
simile. Petala linearia, membranacea, 4-5 mm. longa. Labellum
3.5 mm. longum, 3.5 mm. latum ad apicem, membranaceum,
cuneato-flabellatum, retuso-apiculatum vel bilobatum; obi
truncati marginibus irregulariter dentatis; ad basim prope co-
lumnam callus incrassatus, cucullatus. Columna 2.5 mm. longa,
ex comparatione crassa.

Plant small, monophyllous. Pseudobulb minute, sheathed by
the petiole of the ovate-cordate or suborbicular apiculate leaf:
Peduncle strongly winged, comparatively stout, bearing about
ten flowers. The flowers appear to have been greenish when fresh,
with five purple nerves in the labellum. Liparis cardiophylla
is closely allied to L. neuroglossa Reichb. f., a Bolivian species,
to L. ramosa Poepp. & Endl. as indicated above, and to L. ele-
gantula Krinzl., a bifoliate species, native of Peru.

Jamaica: John Crow Peak, at 6000 ft. alt., January 12, 1907, Wm. Har-
ris (no. 9784). Type in herb. Ames (no. 10529).

[ 92 |

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CAMA)

rick Wes as 8 ek me i meo’y
‘ Wa’

hic oneus frou + Ieee
car diaphy lla ae ies

SY. 59

ORCHIDACE/

Piate 59: Liparis cardiophylla
Plant, natural size, drawn from the type.
1, labellum; 2, petal; 3, lateral sepal; 4, upper
sepal. All parts drawn, enlarged, with the aid
_ of the camera lucida.

[ 93 ]

A SUMMARY OF NEW SPECIES AND

COMBINATIONS PROPOSED IN THIS FASCICLE

Nore. The figures refer to page numbers
Dendrochilum rhombophorum (Reichb. f.) n. comb.
Dendrochilum Foxworthy sp. nov.

Dendrochilum Loheri sp. nov.

Dendrochilum anfractoides sp. nov.

Dendrochilum Curranii sp. nov.

Dendrobium ornithoflorum sp. nov.

Stelis compacta sp. nov.

Erythrodes Merrillii (Ames) n. comb.

Liparis cardiophylla sp. nov.

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INDEX

§ Acorip1um (Dendrochilum), 4, 5, 7, 8,
9, 10, 12, 13, 15

ANGRECUM Thouars, 69, 70
philippinense Ames, 69, 71

APHANOSTELIDION (Subg. of Dendrochi-
lum), 9, 12

§ APoD& PROREPENTES (Pleurothallis), 24

Bo.LBoPuyLiiné, 4
BRACHIONIDIUM Lindley, 77

BULBOPHYLLUM Thouars, 56
alagense Ames, 54, 57
cernuum Blume, 56, 58
halconense Ames, 54, 57
mindorense Ames, 58, 59
Pleurothalloides Ames, 54, 55, 56, 57

CESTICHIS Pfitzer
_halconensis Ames, 63, 64

CHEIROSTYLIS Blume
Griffithii Lindley, 46
octodactyla Ames, 46, 47

CCELOGYNE Lindley, 6
pumila Reichb. f., 8
rhombophora Reichb. f., 8

Ca@LocyNina&, 4, 6, 8

CYRTOSTYLIS Robert Brown, 90
reniformis R. Brown, 90

DENDROBIUM Swartz, 60
acuminatissimum Lindley, 60
ornithoflorum Ames, 60, 62

DENDROCHILUM Blume 39, 4, 5, 6,
M5085 95 12
affine Ames, 8
anfractoides Ames, 13, 14, 15, 19
anfractum (Ames) Pfitzer, 8, 13, 14,
15
bicallosum Ames, 5

cinnabarinum Pfizer, 8,10,11,12,13,
18

Clemensiz, Ames, 6

Copelandii Ames, 5

Curranii Ames, 15, 16, 20
Foxworthyi Ames, 5, 8, 9, 10, 17
gracile Hooker f., 6

graciliscapum (Ames) Pfitzer, 5
latifolium Lindley, 6

Loheri Ames, 12, 13, 18
longispicatum Ames, 6

Mearnsii Ames, 5

pumilum Reichb. f., 6, 7, 8
rhombophorum (Reichb. f-) Ames, 7
simulacrum Ames, 8

strictiforme (Ames) Pfitzer, 13
tenellum (Nees 5 Meyen) Ames, 9, 16
tenue (Ames) Pfitzer, 15, 16
tenuifolium (Ames) Pfitzer, 9
uncatum Reichb. f., 6

venustulum (Ames) Pfitzer, 12, 13, 16
Woodianum Ames, 5

§Etoneat (Pleurothallis), 30

EPIPACTIS Boehmer, 44
clausa A. A. Eaton, 41, 43
dolabripetala Ames, 44, 45

repens Crantz, 33
striata (Reichb. f.) A. A. Eaton, 44

ERIA Lindley, 86
graciliscapa R. A. Rolfe, 88, 89
halconensis Ames, 85, 86, 87
prorepens Reichb. f., 52
tenuifolia Ridley, 88

ERYTHRODES Blume, 80
Blumei (Lindley) Schlechter, 80
bracteatus (Blume) Schlechter, 80
Henryi (R. A. Rolfe) Schlechter, 80
humilis (Blume) J. J. Smith, 80

[ 97 ]

INDEX

Merrillii Ames, 79, 82 McGregorii Ames, 65, 66
papuana Schlechter, 80 mindorensis Ames, 67, 68
purpurascens Schlechter, 80 PHOLIDOTA Lindley, 8

viridiflorus (Lindley) Schlechter, 80
§EupENpDRocHILUM, 4, 5, 6
GOODYERA Robert Brown, 44
§Grastipium (Dendrobium), 60

PHREATIA Lindley
prorepens Reichb. f., 52, 53

PuysurE#&, 22, 81

PHYSURUS L. C. Richard, 32, 80

H#MARIA Lindley, 22 Blumei Lindley, 80
Merrillii Ames, 21, 23 bracteatus Blume, 80
HERPYSMA Lindley, 80 Henryi R. A. Rolfe, 80

Merrillii Ames, 79 humilis Blume, 80

hyphematicus Reichb. f., 35

§ Eria), 88
oan ee, polygonatus Ames, 35, 36

§ LaxirLor& (Cestichis), 63 purpureus Ames, 37, 38

LIPARIS L. C. Richard querceticola Lindley, 33, 39
cardiophylla Ames 92, 93 repens Lindley, 35
elegantula Kriinzlin, 92 secundus Ames, 32, 33, 34
neuroglossa Reichb. f., 92 venustulus Ames, 39, 40
ramosa Poeppig and Endlicher, 92 veridiflorus Lindley, 80
Saundersiana Reichb. f., 90, 91 PLATYCLINIS Bentham, 4
Wendlandi Reichb. f., 90 Piatycuinis (Subg. of Dendrochilum),

LISTROSTACHYS Reichb. f., 70 a

MASDEVALLIA Ruiz and Pavon § PLatyciinis (Dendrochilum), 4, 5
floribunda Lindley, 48 PLEUROTHALLIS Robert Brown,77
Rolfeana Kréanzlin, 50 hirsuta Ames, 29, 30, 31
tubuliflora Ames, 48, 49 hians Ames, 24, 25
Tuerckheimii Ames, 50, 51 hians Lindley, 24

§MonantTuaparva (Bulbophyllum), 54, Johnstonii Ames, 27, 28
55, 56 repens Ames, 24, 25, 26

Sertularioides (Swartz) Lindley, 24
POLYGONUM, 35

§ Potystacny& (Stelis), 77

§Monostacuy (Stelis), 76, 77
MYSTACIDIUM Lindley, 70

NEoTTIN#-PHysUREs, 21

§ Pseupacoripium (Dendrochilum), 5
NEPHELAPHYLLUM Blume

mindorense Ames, 83, 84 SAUROGLOSSUM Lindley, 72
pulchrum Blume, 83 SPIRANTHE, 81

OBERONIA Lindley SPIRANTHES L. C. Richard, 72
Aporophylla Reichb. f., 67 eriophora Robinson and Greenman, 72
ciliolata Hooker f., 65 Llaveana Lindley, 72

[ 98 |

INDEX

saltensis Ames, 72, 73 intermedia Poeppig and Endlicher, 74
STELIS Swartz, 74, 76, 77 lancilabris Reichb. f., 76, 77
compacta Ames, 76, 78 §Tricuotosia (Eria), 85, 86

gracilis Ames, 74, 75

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/Orchidaceae: illustrations and studies

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