les graciles, breves, juventute vaginis arctis tubularibus 
omnino tecti. Folium singulum, probabiliter semicylin- 
dricum, acutum. Inflorescentiae axillares, uni- vel pau- 
ciflorae. Flores membranacel. Sepala lanceolata vel ovato- 
lanceolata, uninervia; lateralia paulo obliqua et saepe 
libera. Petala sepalis lateralibus similia. Labellum sim- 
plex, subquadrato-ellipticum, bidentatum. Column par- 
va, arcuata, basi incrassata. 
Plant slender, caespitose, 4.7—-9.5 em. high. Roots 
fibrous, glabrous, very numerous. Stems about 1-5 cm. 
long, 1- or 2-jointed, slender, when young entirely con- 
cealed by close tubular evanescent sheaths, unifoliate, 
erect or spreading. Leaf slender, probably semicylindrie 
and channelled when fresh, shortly and indistinctly peti- 
oled, often arcuate and conduplicate in the dried speci- 
men, about 2.1—4.9 em. long, up to 2 mm. wide, abruptly 
acute. Flowers solitary or few, membranaceous. Lateral! 
sepals ovate-lanceolate to linear-lanceolate, free or con- 
nate to the middle, about 8.8-5 mm. long, 1—-1.6 mim. 
wide, acute to shortly acuminate, somewhat asymmetric, 
prominently l-nerved with two indistinct supplementary 
nerves at the base. Dorsal sepal similar, 4—5.5 mm. long, 
1-2 mm. wide, acute or shortly acuminate. Petals linear- 
lanceolate oblong-lanceolate or elliptic-lanceolate, acute 
or acuminate, 4-4.8 mm. long, 1-1.6 mm. wide, 1-nerved, 
asymmetric. Lip simple, subquadrate-elliptic, about 2— 
2.7 mm. long, 1.8-2 mm. wide, bidentate at the apex, 
cordate at the base, 3-nerved. Column small, slender, 
about 1.2-1.5 mm. long, arcuate, dilated at base, with 
a prominent terminal truncate or rotundate wing and a 
reflexed rostellum. 
This species is represented by several collections. 
One herbarium sheet (designated in the handwriting of 
R.A. Rolfeas #. Lim Thurn 116A?) consists of several 
apparently different collections and is taken as the type. 
[ 88 ] 
