Pendent epiphytic herbs about 45 cm. long. Leaves 9-15 cm. long and 2-3.5 cm. broad, elliptic to elliptic-lanceolate, coriaceous, distichous, marginate, gray, deciduous; leaf-sheaths loose, completely investing the stem, pergameneous, an-cipitous, the abscission line prominent. Inflorescence of 1 or few large terminal flowers subtended by a leaf-like sheath up to 3 cm. long; flowers large for the genus, green. Dorsal sepal about 5 cm. long and 1.2 cm. broad, oblong-oblance-olate, acute, fleshy, with 5-7 main nerves. Lateral sepals 4.3-4.8 cm. long and 1.5 cm. broad, elliptic, acute, fleshy, with about 7 main nerves. Petals about 4.5-5 cm. long and 2 mm. broad,. linear, somewhat narrowed to the base, obtuse or acute, fleshy, 1-nerved. Lip with the claw adnate with the column to the apex of the column; lamina about 2.5-3 cm. long and 3 cm. broad, 3-lobed, suborbic-ular in general outline, with a thickened central nerve and with thickened nerves or ridges radiating from it and covering the remainder of the lip, lateral lobes rounded, about 1.5 cm. long, mid-lobe 1-1.5 cm. long and about 1.5 cm. broad, subquadrate, emarginate. Column 1.5-2 cm. long and 6-8 mm. in diameter at the apex, fleshy.
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