J.J.Sm., Bull. Jard. Bot. Buitenzorg, II, 26: 81 (1918)
Epiphytic herbs. Stems erect to pendent. Leaves few, flat, unequally bilobed. Inflorescence simple, few-flowered; rachis fleshy or sometimes flattened. Flowers resupinate. Sepals and petals free, spreading. Labellum motile, sessile, sagittate, conical and solid in front, with large auriculate side lobes; spur absent. Column with a distinct foot to which the labellum is elastically attached; pollinia two, entire, stipe linear-oblong, viscidium oval, at least half as long as the stipe; rostellar projection prominent.