Erect, epiphytic herbs with approximate, fleshy, ovoid to elliptic-ovoid, compressed, monophyllous pseudobulbs 2-4 cm. long and 1.5-2 cm. wide, the bases enveloped in several papery, imbricating bracts which often weather away to loose fibers. Leaves coriaceous, ligular, obtuse to subacute, 15-40 cm. long and 2-3 cm. wide, contracted below into slender, conduplicate petioles. Inflorescences usually 2-4 slender, 1-flowered scapes 4-6 cm. long, produced from the bases of the pseudobulbs. Flowers of moderate size. Sepals subequal, free, spreading, yellow or tan, the dorsal sepal concave, 1.5-1.8 cm. long and .4-.6 cm. wide, ligular to elliptic-lanceolate, obtuse, with a minute apicule, the laterals ligular to elliptic-lanceolate, obtuse, 1.8-2 cm. long and .4-.8 cm. wide, the oblique bases adnate to the foot of the column forming a short, subacute mentum. Petals sub-equal to the dorsal sepal, yellow or tan, rather obliquely ligular, acute, 1.5-1.7 cm. long and .4-.5 cm. wide. Lip conspicuously 3-lobed near the apex, 1.4-1.6 cm. long and .7-.8 cm. wide when spread out, contracted at the base and articulated with the foot of the column, the lateral lobes yellow or tan, erect in natural position, the acute to obtuse apices projecting, the mid-lobe ovate, acute, fleshy, rugulose, minutely pilose, usually reddish brown, about 1/3 the total length of the lip, the under-surface of the apex with a triangular keel; the disk with a low, ligular callus about 3/4 the length of the lateral lobes. Column semi-terete, somewhat arcuate, 7-8 mm. long, produced at the base into a foot. Anther terminal, operculate, incumbent, 1-celled.
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