Description.—HHerb, epiphytic. Pseudobulbs clustered, 
stem-like, 3-44 ft. high, about 1 in. thick at the base, some- 
what narrowed upwards, leafy and with many nodes. 
Leaves distichous, elliptic-oblong, obtuse or apiculate, very 
coriaceous, 3—4 in. long, 13-2} in. wide. Racemes axillary, 
produced near the tops of the pseudobulbs, about 14 in. 
Jong, many-flowered, nearly erect. Bracts wide, triangular- 
ovate, acute, #-13 in. long. Pedicels up to 2 in. long. 
flowers of medium size, white, the lateral lobes of the 
labellum marked with lilac streaks. Sepals: the dorsal 
oblong-lanceolate, acute, somewhat spirally twisted, 3 in. 
long; lateral sepals like the dorsal but with an oblique 
base prolonged as a triangular, acute mentum 5 lin. long. 
Petals somewhat spreading, linear, acute, narrowed to the 
base, slightly expanded and somewhat twisted upwards, 
1{-14 in. long. Labellum 3-lobed, 1 in. long; lateral lobes 
oblong, obtuse, minutely crenulate; mid-lobe obovate- 
lanceolate, acute, minutely crenulate, 3 in. long, about } in. 
wide; disk traversed longitudinally by 3 parallel lamellae 
which are dilated, truncate and finely crenulate near their 
anterior extremity. Column oblong, 4 in. long. 
Fig. 1, portion of the labellum: 2, column; 3, anther-cap; 4, pollinia; 
5, sketch of an entire plant :—all enlarged except 5, which is pea AB hp 
