vior et latior, sepalum utrinque suborbiculari-ovatum. 
Petala multo minora, transverse rhombico-ovata, apice 
late rotundata et carnosa. Labellum petalis subaequale, 
ovatum, obtusum; discus callo transverso bilobato valde 
incrassato occupatus. Columna generis. 
Plant medium-sized, epiphytic. Roots fibrous, filiform, 
glabrous, numerous. Rhizome prominent, concealed by 
close tubular imbricating sheaths. Stems obliquely as- 
cending, produced from the rhizome in pairs apparently 
about 8 cm. apart in our specimen, about 12-14 cm. 
long, clothed with two or three tubular sheaths of which 
the uppermost is looser and much the largest. Leaf soli- 
tary, long-petioled, 10.6-13 cm. long, erect-ascending ; 
lamina lanceolate-elliptic, subacute with a minutely tri- 
denticulate apex, gradually cuneate below, chartaceous, 
with the mid-nerve prominently exserted beneath, about 
8.5-10 cm. long and 2-8 cm. wide. Racemes two to 
each stem (rarely a short third one is present), shorter 
than or very slightly surpassing the leaf, suberect or 
spreading, many-flowered, densely flowered above and 
loosely flowered below, up to 15 cm. long, subtended 
by an inconspicuous conduplicate scarious spathe about 
1.2 cm. long. Floral bracts shallowly infundibuliform, 
apiculate, widespreading. Flowers rather large for the 
genus, secund in anthesis, conspicuously bilabiate, dull 
reddish white. Sepals membranaceous, minutely cellular- 
pubescent within. Dorsal sepal ovate, acute, convex, 
shortly connate with the lateral sepals at the base, 3- 
nerved above and 5-nerved below the middle, about 
6.1 mm. long, 3.5-4 mm. wide. Lateral sepals connate 
nearly to the apex into a deeply concave lamina, each 
one suborbicular-ovate, subacute, lightly oblique, 3- to 
4-nerved, about 5.2 mm. long and 4.8 mm. wide. Pet- 
als much smaller, transversely rhombic-ovate, broadly 
rounded and fleshy-thickened above, 3-nerved, about 1.75 
[ 16 ] 
