Orchid House of the Royal Gardens, Kew, where it flowers 
annually. 
Descr.—Pseudobulbs clustered, sessile on a very short, 
rarely elongated rootstock, one to one and a half inches 
long, from orbicular to broadly oblong, rounded at top and 
base, compressed, smooth, pale green ; sheaths few, up to 
three inches long, lanceolate, acuminate, striate, dark 
brown, rigid, caducous. Leaves few, six to ten inches 
long, oblanceolate, cuspidate, narrowed into a_ stout 
petiole, coriaceous, dark green, smooth and _ shining 
above, pale beneath with araised green midrib, and three 
or more pairs of very faint nerves. Scapes two to three 
inches long, ascending from the base of the pseudobulb, 
very stout, red-brown, clothed with oblong obtuse brown 
sheaths, of which the median are an inch long, the lower 
shorter, and the uppermost longer. Flowers four inches 
broad across the lateral sepals, which and the petals are 
pure white, except towards the base, where they are of a 
purplish-red colour, broken upwards into blotches. Dorsal 
sepal oblong, obtuse, concave, arched ; lateral triangular- 
ovate, obtuse, conniving at the base into a broad rounded — 
mentum. Petals much smaller than the sepals, broader 
below, and narrowed into acute triangular tips. Lip with 
a very dark purple tube, on the disk of which within is a 
flattened club-shaped adnate smooth appendage; lateral 
lobes hardly any; terminal rounded, bright yellow, with a 
crisped border, which is faintly streaked with purple. 
Column white, spotted and streaked with red-purple. 
Anther orange-yellow.—J. D. H. 
Fig. 1, Base of lip with adnate appendage; 2, column; 3, pollinia :;—AJl 
enlarged. 
