rowly linear, more or less conduplicate (especially below), 
acute or subacute, gradually long-narrowed below, gently 
recurved in the dried specimen, up to 19 cm. long and 
4.5 mm. wide above the middle. Inflorescences lateral 
at the base of the pseudobulbs, filiform, suberect, some- 
times arcuate above, racemose in the upper part, clothed 
below the raceme with several imbricating foliaceous 
sheaths when young, about 8 cm. or less long: raceme 
few- (3- to 9-) flowered, loose. Floral bracts infundibu- 
liform, long-acuminate, scarious. Flowers minute, mem- 
branaceous, with the perianth campanulate. Sepals free, 
cymbiform with lightly saccate base, 1-nerved, dorsally 
carinate. Dorsal sepal elliptic-oblong when expanded, 
subacute, about 8 mm. long and 1.6 mm. wide. Lateral 
sepals oblong, subacute, about 3.5 mm. long and 1 mm. 
wide. Petals oval-ovate, acute, 1-nerved, lightly concave, 
about 8 mm. long and nearly 2 mm. wide. Lip sub- 
parallel to the column, adnate to the column, longitu- 
dinally concave in natural position, simple, pandurate, 
with the anterior half triangular-ovate and acute, and the 
slightly narrower posterior portion rounded at the base, 
about 2.7 mm. long and 1.4 mm. wide across the ovate 
part; dise thickened through the center below, the thick- 
ening expanded into a pair of erect semirhombic keels 
in the middle. Column stout, strongly dilated above 
(and thus clavate) but not winged, about 1.6 mm. high 
at the back. Anther galeate, obovoid. Pollinia 2, waxy, 
obliquely pyriform, apparently without either stipe or 
caudicles. 
This little plant is remarkable for having flowers with 
an apparent lack of both a viscid dise and caudicles to 
the pollinia. It is referable to Schlechter’s Pleuranthae 
and it appears to be allied to his subtribe Bulbophylleae. 
However, it is quite different from any of the genera that 
have been assigned to that group in having a membra- 
[ 154 | 
