columnae parti basali adnatum, apice trilobatum, basi 
truncato-cordatum; lobi laterales comparate magni, ob- 
lique semiovati, apice incurvi; lobus medius minutus. 
Columna gracilis. 
Plant small, epiphytic, caespitose, about 8 cm. high. 
Roots fibrous, numerous. Stems very slender, erect- 
spreading, up to 5.6 cm. long, entirely concealed by six 
to eight close tubular densely pilose sheaths which ter- 
minate in an ovate spreading marginate pilose mouth. 
Leaf solitary, terminal, erect or erect-spreading, elliptic 
to broadly oval, up to 2.7 cm. long and 1.5 ecm. wide 
(commonly about 2 cm. long and 1 em. wide), subacute 
to obtuse at the minutely tridenticulate apex, cuneate 
below and gradually narrowed to a short petiole, many- 
nerved with three more prominent nerves. Racemes ter- 
minal, axillary, three or four (rarely five), densely 2- to 
16-flowered, commonly more or less shorter than the sub- 
tending leaf but rarely surpassing the leaf, about 3 cm. 
or less long including the short naked peduncle, erect or 
arcuate. Floral bracts subapproximate, infundibuliform. 
Flowers small, reddish yellow, membranaceous and wide- 
spreading in anthesis. Sepals glabrous, connate below. 
Dorsal sepal ovate-lanceolate, long-acuminate, 3-nerved, 
about 7.4 mm. long and 2.6 mm. wide across the base of 
the free portion. Lateral sepals similar, ovate-lanceolate, 
long-acuminate, prominently 1-nerved with a short sup- 
plementary nerve, about 7 mm. long along the central 
nerve and 2.2 mm. wide across the base of the free por- 
tion. Petals transversely bilobed with subequal more or 
less divergent lobes; posterior lobe narrowly lanceolate, 
gradually narrowed to an obtuse tip, about 3.8 mm. long 
and 0.7 mm. wide at the base of the free part; anterior 
lobe about equally large, oblong-lanceolate. Lip adnate 
to the lower part of the column, broadly triangular-ovate 
in outline, prominently 3-lobed near the apex, truncate- 
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