Description.—Herb ; epiphytic; pseudobulbs clustered, 
cylindric, 13-24 ft. long, leafy. Leaves distichous, oblong- 
lanceolate, almost blunt, spreading or recurved, 34-4 in. 
long, 1-14 in. wide. Racemes short, 3-13 m. long, 2-4- 
flowered; bracts oblong, blunt, eonvolute, }-} in. long ; 
pedicels slender, 14-13 in. long. Flowers showy, pale 
yellow with purple-tipped sepals and petals and a purple- 
streaked Hp-base. Sepals spreading, linear-oblong, blunt, 
irregularly twisted, 14-1} in. long. Petals oblong, blunt, 
with undulate margins, irregularly twisted, 13-13 in. long. 
Lip entire, wide elliptic, blunt, convolute at the base, 13 in. 
long; disk velvety. Mentum blunt, } in. long. Column 
wide, 4 in. long. 
Fig. 1, portion of labellum ; 2, column; 8, pollinia; 4, sketch of an entire 
plant :—all enlarged except 4, which is much reduced. 
