lanceolatum, acuminatum, concavum. Sepala lateralia 
oblique lanceolata, valde acuminata, concava vel navicu- 
laria. Petala linearia, a basi reflexa. Labellum columnae 
valde adnatum:; lamina intra trilobata, basi cordato-trun- 
cata; lobi laterales parvi, erecti, semiobovati; lobus me- 
dius multo major, anguste triangularis, multo incrassatus, 
acuminatus. Columna parva, crassa. 
Plant epiphytic, branching (incomplete in my speci- 
men). Roots fibrous, glabrous. Stems irregularly 
branched, entirely enveloped by tubular-cylindric mi- 
nutely rugose sheaths which are leaf-bearing except near 
the base, 5 mm. or less in diameter. Leaves distichous, 
oblong-linear, acute with an apiculate apex, slightly nar- 
rowed at the clasping base, up to 5.9 em. long and 8 mm. 
wide, thickly coriaceous, with the mid-nerve prominently 
‘arinate beneath. Inflorescences terminal at the tip of 
the branches, racemose, suberect to nodding, about 9.5 
em. or less long, very loosely several- (up to 10-) flow- 
ered almost to the base, with the rachis more or less 
fractiflex. Floral bracts conspicuous, horizontally spread- 
ing, concave-conduplicate, ovate in outline, apiculate at 
the rounded to acute apex, up to 7 mm. long. Flowers 
fleshy (on the summit of rather mature ovaries in my 
specimen). Dorsal sepal lanceolate, acuminate to an acute 
apex, concave, about 10 mm. long and 8.5 mm. wide. 
Lateral sepals obliquely lanceolate or ovate-lanceolate, 
long-acuminate to an acute apex, concave below, navicu- 
lar above, about 11 mm. long and 4.6 mm. wide. Petals 
linear, obtuse, abruptly reflexed at the base, lightly sig- 
moid, about 8.7 mm. long and 1 mm. wide, 1-nerved. 
Lip adnate to the column nearly to its apex; lamina 
tubular-involute, broadly cordate-truncate at the base, 
distinctly 3-lobed near the base, about 8.2 mm. long; 
lnteral lobes erect and embracing the apex of the column, 
small, semiobovate with a somewhat flattened outer mar- 
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