Much-branched epiphytic herbs, probably up to a meter or more long. Stems slender, covered with, the scarious leaf-sheath bases when young, becoming naked with age, bearing leaves toward the ends of the stems. Leaves 3-7 cm. long and 0.2-0.8 cm. broad, linear to linear-lanceolate, acute. inflorescence a few-flowered raceme, about as long as or shorter than the subtending leaves. Flowers with sepals and petals greenish, the lip white with purple-red markings. Dorsal sepal about 12-16 mm. long and 4-5 mm. broad, elliptic-lanceolate, acute or acuminate. Lateral sepals similar to the dorsal but slightly oblique. Petals 12-14 mm. long and 3-5 mm. broad, linear-oblanceolate, acute. Lip unguiculate; claw adnate to the column; lamina 10-12 mm. long and 11-14 mm. broad, fleshy, suborbicular, undulate-crenate, provided with 2 small lamellate calluses under the apex of the column (hidden by the clinandrium) and a large, thick, central callus made up of 3 or more ridges. Column winged laterally at the apex and with two apical stelidiar arms above the clinandrium.
Home