Erect or scandent epiphytic herbs up to about 70 cm. long. Stems branched or rarely simple, bearing leaves near the apex of the stem, covered with the amplexi-caul leaf-sheaths or naked below. Leaves 3-13 cm. long and 1.5-5.5 cm. broad, narrowly oblong to oblanceolate-acute, coriaceous. Inflorescence a few-to several-flowered terminal raceme, about equal to the subtending leaves; flowers greenish. Dorsal sepal 11-15 mm. long and 3.5-5.5 mm. broad, oblanc\eolate, acute. Lateral sepals 11-15 mm. long and 4.5-6 mm. broad, semilunate, acute. Petals 11-14 mm. long and 1.5-2 mm. broad, narrowly oblanceolate, acute. Lip unguiculate; claw adnate to the column; lamina 7-9 mm. long and 12-17 mm. broad, fleshy, 3-lobed, subreniform in outline, lobes about equal, the laterals divaricate and rounded, the mid-lobe subtriangular; disc without calluses.