52,4 Ames, and Quisumbing: Philippine Orchids, IV 455 
Herba P. Lueddemannianae habitu. Caulis abbreviatus, 
paucifoliatus. Folia oblongo-oblanceolata, ad basim sensim an- 
gustata, carnosa. Scapi breves, simplices, pauciflori. Flores 
subflavidi et sine maculis. Sepala lateralia oblique ovata, acuta. 
Sepalum dorsale oblongo-ellipticum, obtusum. Petala ovato- 
elliptica, breviter unguiculata. Labellum trilobatum; lobi la¬ 
terals erecti, subquadrato-oblongi, apice bidentato truncato; 
lobus intermedius rhombico-spathulatus, interne unguiculatus, 
apice obtuse tridentatus; discus supra medium papillis capilli- 
formibus numerosis ornatus. Columna flavida. 
Habit similar to that of P. Lueddemanniwna Reichb. f. Stem 
abbreviated. Leaves oblong-oblanceolate, 13 to 17.5 cm long, 
5.5 to 7 cm wide, broadly obtuse at the apex, gradually tapering 
to the base, pale green, fleshy, thick, very slightly rigid, some¬ 
what conspicuously nerved with yellowish nerves. Scapes sim¬ 
ple, short, few-flowered, 3 to 6 cm long, appearing in the axils 
of the leaves or at the base of the stem near the roots; rachis 
very short. Flowers odorless, 6 to 6.5 cm across, yellowish, and 
absolutely without transverse bars on the sepals and petals, 1 
or 2 opening at a time. Pedicellate ovary marguerite yellow, 
about 3.3 cm long, the ovary terete, not twisted. Lateral sepals 
obliquely ovate, acute, apiculate, 3.2 to 3.3 cm long, 1.6 to 1.7 
cm wide, 9-nerved. Dorsal sepal oblong-elliptic, obtuse, 3.2 
to 3.3 cm long, 1.5 to 1.6 cm wide, 9-nerved. Petals ovate-ellip¬ 
tic, obtuse, about 2.8 cm long, 1.7 cm wide, with shortly stalked 
base which is about 4 mm long, 7-nerved. Labellum fleshy, 
3-lobed; lateral lobes erect, subquadrate-oblong, with a promi¬ 
nent fleshy callus above the middle, bidentate at the truncate 
apex, about 8 mm long, cadmium yellow; middle lobe rhombic- 
spatulate, about 1.9 cm long, narrowed below into a distinct 
claw about 7 mm long, obtusely tridentate at the apex when 
spread out, the irregular margins minutely crisped-undulate, 
marguerite yellow; disc (between the side lobes) with a ligulate 
sharply bidentate callus which extends (in the middle of the 
claw) into a median high keel dentate in front, and which is 
succeeded by an irregular longitudinal cluster of hairlike papillae. 
Column about 1.2 cm long, marguerite yellow; anther white. 
LUZON, Manila, Bureau of Science orchid house, Bur. Sci. 85572 
Eduardo Quisumbing, February 3, 1932. 
A living plant of this species was sent to the junior author 
by Mr. F. E. Shafer, an orchid enthusiast of Cebu, who pur¬ 
chased it from a peddler in Cebu. Its origin is unknown, but 
is doubtless Philippine. The plant presented to the junior 
