Epiphytic herbs. Roots terete, not branching, glabrous, smooth. Stem patent, rooting at base. Leaves conduplicate, articulate, distichous, oblong, twisted at base so as to lie in one plane with stem, apex oblique. Inflorescence lateral, solitary, racemose, many-flowered; peduncle pendent or erect; rachis continuing the line of peduncle, straight, not thicker than peduncle. Flowers resupinate, c. 2 cm wide, lasting less than a day, opening all simultaneously, quaquaversal, fragrant, sepals and petals ochre-yellow, usually with red-brown spots, labellum creamy white with reddish and orange or red-brown markings. Sepals entire, free, broadly ovatespatulate, rounded. Petals similar to but narrower than sepals. Labellum hinged with apex of column foot, spurred-saccate, trilobed, lateral lobes rectangular, erect; spur conical, obtuse, continuing the line of column foot. Column with foot about as long as column; pollinia four, round, in two pairs, stipe about as long as pollinia, linear-spatulate.