Descr. Pseudo-bulbs clustered, nearly three inches long, 
ovate, furrowed. Leaves lanceolate, somewhat membran- 
ous, acute, tapering at the base, striated. Scapes radical, 
generally one from each side of a young shoot, racemose, 
shorter than the foliage. Bracteas broadly lanceolate, 
about as long asthe pedicels (including the germens). 
Sepals and Petals spreading, pale yellow, green, ovato- 
lanceolate, acute, connate at the base, nearly equal. Lip 
white, deeply three lobed; the lateral lobes at the base 
(where there are some dark purple streaks) erect, oblong, 
incurved, the terminal or intermediate one four times as 
large, nearly of the same shape, reflexed. The callosity or 
crest is between the two lateral lobes, very prominent and 
fleshy, recurved, somewhat furrowed. . Colwmn semiterete, 
pale greenish-white, streaked with red in front, decurrent 
below, where the labellum is fixed. Anther transverse, 
obtuse, in a great measure sunk into the top of the column, 
two-celled. Pollen two pairs of obovate, waxy masses, 
fixed to a brown, triangular gland. 
Fig. 1. Lip. 2. Column. 8. Outer, and 4, inner view of the Anther- 
case. 9. Pollen-masses :—magnified. | 
