Plant up to a meter tall with a creeping rhizome. 
Roots fibrous, stout, glabrous. Pseudobulb ovoid, slen- 
der-pyriform or cylindric, up to about 10 em. long, in- 
vested by imbricating fibrous, scarious sheaths, 2- to 
3-leaved. Leaves up to 60cm. long, up to 4.8 em. broad, 
commonly much smaller, linear-ligulate to oblong-linear, 
obtuse to acute, more or less conduplicate below, strongly 
coriaceous. Inflorescence surpassing the leaves, loosely 
paniculate or rarely subsimple, with relatively short 
spreading branches. Flowers medium-sized with spread- 
ing segments. Pedicellate ovary smooth to verruculose. 
Lateral sepals elliptic-lanceolate, oblong-oblanceolate or 
oblanceolate, more or less asymmetric, 14-18 mm. long, 
5-6.5 mm. wide, acute to short-acuminate, dorsally more 
or less carinate-thickened near the tip. Dorsal sepal el- 
liptic-lanceolate to oblanceolate, 14-17 mm. long, 5—-6.2 
mm. wide, acute to subacute. Petals elliptic-spatulate, 
obovate-spatulate or round-spatulate with a narrow claw, 
13-16.9 mm. long, 6-8 mm. wide, short-acuminate, acute 
or rounded with an acute tip. Lip almost free from the 
column, deeply 8-lobed, 13.1-15 mm. long trom base of 
column to tip of mid-lobe; lateral lobes erect and clasp- 
ing the column in natural position, horizontally spreading 
when expanded, very asymmetrical, oblong, oblong-pan- 
durate, triangular-oblong to obliquely ovate, 5.6-8.9 
mim. long on the interior margin, apex obtuse to broadly 
rounded; mid-lobe separated from the lateral lobes by : 
short and distinct isthmus, suborbicular-ovate (rarely), 
suborbicular to transversely oval, 6-7.8 mm. long, 6.2- 
9.8 mm. wide, apex acute to broadly rounded or slightly 
retuse and apiculate, base subcordate to rounded and 
somewhat cuneate, anterior margin plicate, veins smooth 
or rarely verruculose; dise with two fleshy ridges making 
vu fovea on the isthmus and extending into fleshy radiat- 
ing lines on the mid-lobe, the central one sometimes 
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