inner of which is prolonged into a long tube sheathing the 
petiole ; old pseudobulbs one and a half inches in diameter, 
red brown, furrowed. Leaf a foot long, elliptic-lanceolate, 
acuminate, plicate, many-nerved, narrowed into a slender, 
green petiole, as long as the blade, or shorter. Peduncle 
nearly twice as long as the petiole, arising from the base 
of the pseudobulb, green, clothed at the base with closely 
imbricating, ovate, acute, brown sheaths, half an inch long, 
and bearing upwards a few distant appressed, brown, 
obtuse sheaths. Raceme erect, few- and lax-fid.; bracts 
lanceolate, brown, about equalling the pedicel, which, with 
the ovary, is about half an inch long. Perianth about two 
inches broad across the sepals. Sepals and petals spreading, 
subequal, lanceolate, acuminate, pale yellow, with five to 
seven slender, red nerves. Lip nearly white; side lobes 
elongate, obtuse, embracing the column; midlobe small, 
rhomboidly orbicular, abruptly acuminate; disk with three 
lamelle that are prolonged on to the midlobe, and there 
become much deeper; spur a lobulate sac. Column white, 
winged. Anther subquadrate, tip truncate ; pollinia eight, 
in two superposed pairs of four each.—J. D. H. 
Fig. 1, Lip; 2, column, spur and lip of ovary; 3, anther; 4, pollinia :—Al/ 
enlarged, ae 
