Erect epiphytic herbs. Pseudobulbs ovoid, ridged, often somewhat laterally compressed, 2-4.5 cm. long and 1.5-2.5 cm. wide, the bases enveloped in 2-3 papery, imbricating bracts, the apex with 2 elliptic-lanceolate, plicate, acuminate leaves 10-22 cm. long and 2-4.5 cm. wide. Inflorescences more or less elongate, pendent racemes from the base of the pseudobulbs. Flowers usually many, somewhat variable in structure, relatively large and conspicuous. Sepals membranaceous, the bases all connivent, yellow, orange, or salmon, sometimes with purple-brown spots, dorsal sepal erect, concave, elliptic-oblong and acute to broadly rectangular and obtuse or shortly apiculate, 12-18 mm. long and 6-12 mm. wide, laterals spreading or reflexed, their bases inserted on the column foot, obliquely ovate, acute or obtuse and shortly apiculate, 15-17 mm. long and 12-14 mm. broad. Petals membranaceous, pale salmon or orange, lanceolate and abruptly acuminate, or subfalcate and acuminate, 4-6 mm. long and 2.5-3 mm. wide, the attenuate apices usually recurved, the bases broadly spreading and connivent with those of the sepals. Lip with a short, ligular basal claw, apparently articulated with the column foot, the central portion or mesochile inflated, subcalceiform, waxy yellow, 8-12 mm. long, the apex broadly obtuse, with a short or elongate, erect, linear-lanceolate, acuminate projection 6-10 mm. long. Column erect, semi-terete below, dilated and subclavate above, 9-11 mm. long, the base produced into a foot. Rostellum conspicuously elongate.
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