Epiphytic herbs. Roots terete, not or sparsely branching, glabrous, smooth. Stem elongate, pendent to ascending, rooting in basal part. Leaves articulate, distichous, terete. Inflorescence lateral, solitary, paniculate, pendent, many-flowered; rachis continuing the line of peduncle, straight, glabrous. Flowers resupinate on a pendent inflorescence, about 0.6–1.0 cm wide, many opening simultaneously, quaquaversal, sepals and petals yellowish or brownish, labellum partly pinkish purple. Sepals entire, free, obtuse. Petals shorter than sepals. Labellum rigidly attached to column foot, spurred, trilobed; spur saccate to cylindrical, almost closed at mouth by a callus at back wall opposite a swelling below midlobe, interior without aseptum. Column with a well-developed column foot; pollinia four, compressed in two unequal pairs, those of a pair unequal, stipe linear-spatulate, longer than pollinia.