Orchids from Ponape — Hawkes 
5 
and petals flaring somewhat in apical half, 
odorless, 11 mm. long, about 5 mm. broad, 
basal half vermilion, apical half canary yellow. 
Sepals similar, thick, coherent for about half 
of length (the laterals slightly more), flaring 
apically, triangular-lanceolate or ovate-tri- 
angular, acute, the margins of the free portion 
slightly introrse, about 10.5X3 mm.; laterals 
at base forming a rotund-truncate mentum 
about 3 mm. long, rather prominently carin- 
ate. Petals almost as long as sepals, about 1 
mm. wide, linear-lanceolate, with a slight, 
rather abrupt expansion just below the mid- 
dle, acute, the apex curved outward, truncate 
basally. Labellum very thin in texture, almost 
transparent, 8X3 mm., non-mobile, entire, 
obovate when expanded, unguiculate basally, 
acutish, expanded into a rather truncate sac 
near base which projects half-way under the 
unguicule, ecallose, with irregular, somewhat 
impressed longitudinal lines along the disc, 
lateral margins somewhat incurved. 
Mt. Beirut, 2,200 ft. alt.: on trees with #9 
{Bulbophyllum sp.). Flowers of this species not 
seen, but I am told that they are pale orange 
with green- tipped petals, arising singly from 
the tips of the pseudobulbs. August, 1950, 
P.A. Adams 10, type, flowering under culti- 
vation at the Botanical Garden of the Uni- 
versity of California, and deposited as a 
pickled specimen in the Herbarium of this 
institution. 
This handsome little epiphyte is not allied 
to any species of Bulbophyllum known to the 
writer. Its labellar structure, coupled with the 
unique conformation of the flowers, appears 
unique in the genus. 
Bulbophyllum sp. 
Mt. Beirut, 2,200 ft. alt.: on dwarf trees 
with #10 {Bulbophyllum sp.), #7 {Diplocaulob- 
ium carolinense A. D. Hawkes), #5 {Dendrobi- 
um nanarautkolum Fukuyama), #16 {Bulbo- 
phyllum mkronesiacum Schltr.). Flower not 
seen. August, 1950, P. A. Adams 9. A sterile 
specimen, with living material in our col- 
lections. 
DENDROBIUM Swartz 
Soc. Set. Uppsala, Nova Act. 6: 82, 1799. 
This is the largest genus in the Caroline 
orchid flora, with 15 or 16 species now known 
from the area. 
Dendrohtum Adamsu A. D. Hawkes, sp. nov. 
(§ Grastidium) 
Herba epiphytica verisimiliter elongata. 
Caulis (in specimina mihi visa imperfectus) 
12 cm. longus, 2. 5-3. 5 mm. latus, leviter 
arcuatus, luteus, vaginis foliorum arete ob- 
tectus, complanatus. Folia numerosa, cori- 
acea, 5-5.5 cm. longa, usque ad 8-10 mm. 
lata, oblongo-lanceolata, apicibus angusti- 
oribus ensiformi-linearibus, emarginatus vel 
oblique bilobatis, basi obscure conduplicata. 
Pedunculi abbreviati, ca. 3 mm. longi, 
bracteis paucis obtusis obtecti. Flores soli- 
tarii vel 2-ni, membranacei, 1.5 cm. longi, 
campanulati. Sepala lineari-lanceolata, 12 mm. 
longa, 1.5 mm. lata, acuta, lateralia margine 
anteriore basi dilatata cum pede columnae 
mentum triangulum vel rotundo-triangulum 
obtusumque formantia. Petala sepalis later- 
alibus similaria lineari-lanceolata, apice ob- 
tusa. Labellum parvum, trilobatum, apice 
recurvatum; lobis lateralibus erectis, triangu- 
laris, margine anteriore dentatis; lobo inter- 
medio cuneato-oblongo, papilloso, apice 
acuminato quasi caudato. Columna brevis, 
quasi quadrata. 
Epiphytic herb, in our specimen incom- 
plete, apparently rather elongate. Stem (in- 
complete) 12 cm. long, 2. 5-3. 5 mm. thick, 
rather arcuate, yellowish, vaguely zigzag, 
virtually covered by persistent sheathing 
leaf bases, complanate, the leaf bases mostly 
about 1.5 cm. long, obscurely articulate. 
Leaves numerous, rather coriaceous, 5-5.5 
cm. long, 8-10 mm. wide at broadest point, 
oblong-lanceolate, narrowing rather abruptly 
toward the much narrower ensiform-linear 
apical portion, which is deeply emarginate or 
obliquely bilobate, basally somewhat con- 
duplicate. Peduncles abbreviated, about 3 
mm. long, almost as broad, covered with a 
