47, 2 
Ames and Quisumbing: Philippine Orchids, II 201 
acuta, circiter 12 mm longa, 4 mm lata, 3-nervia. Labellum 
a basi cuneata, trilobatum, circiter 16 mm longum; lobi laterales 
triangulares, obtusati vel acuti, trans apicem circiter 3 mm lati; 
lobus intermedius in circuitu suborbicularis, circiter 1 cm longus, 
margine fimbriato. Lineae 3 elevatulae per discum et ultra me¬ 
dium callus cristatus pubescens. Gynostemium sectionis. Cap- 
sula anguste ellipsoidea, circiter 3 cm longa, 6 mm in diametro. 
The stems aggregated, elongate, 9 to 24 cm long, concealed 
by leaf sheaths. Pseudobulbs terete, angled; internodes usually 
2 or 3, 10 to 21 mm long. Leaves distichous, linear-lanceolate, 
acute, flattened, 4 to 6.5 cm long, 3.5 to 6 mm wide. Flowers 
produced along the naked termination of the stems, white, very 
fragrant, about 2.5 cm long, 2.5 cm across. Lateral sepals 
obliquely oblong-lanceolate, acute or obtuse, about 19 mm long 
along the anterior margin, 5 mm wide, 7-nerved, forming an 
obtuse mentum about 7 mm long. Dorsal sepal narrowly oblong- 
lanceolate, subacute, about 13 mm long, 5 mm wide, 7-nerved. 
Petals narrowly oblanceolate or elliptic-lanceolate, obtuse or 
acute, about 12 mm long, 4 mm wide, 3-nerved. Labellum cu- 
neate at the base, about 16 mm long, trilobed; lateral lobes 
triangular, obtuse or acute, about 3 mm wide across the apex, 
lined within with purple; the middle lobe suborbicular in out¬ 
line, about 1 cm long, the margins conspicuously fringed like 
the labellum of Dendrobium polytrichum Ames. The throat 
deep chrome at the base, the pubescent disc with three elevated 
lines. Gynostemium white, about 10 mm long, tridentate at the 
apex. Capsule narrowly ellipsoid, about 3 cm long, 6 mm in 
diameter, subterete, one side somewhat flattened, with three 
distinct longitudinal ribs. 
Batan Island, Batanes Province, Mount Iraya, Bur. Sci. 
7993b Ramos, April 29, 1930, growing on tree trunks, altitude 
about 700 meters. 
Living plants brought to Manila by Mr. M. Ramos, botanical 
collector, Bureau of Science, are now growing in the Bureau of 
Science orchid house and flower throughout the year. The plants 
when first brought to Manila flowered twice in September, 1930, 
and have flowered monthly since, and sometimes even twice a 
month. 
In general habit this species has several close allies, partic¬ 
ularly Dendrobium polytrichum Ames and Dendrobium carina- 
tum (L.) Willd., but it differs from both species in details of 
the lip. 
