Plants without stems. Pseudobulbs ovoid or globose, ca. 2 cm across. Leaves 3-5, petiolate, lanceolate, 50-80 cm long, 10-15 cm wide, strongly plicate, acute. Racemes erect, stout, to 100 cm tall, with many scale-like sheaths toward base; bracts large, elliptic, 4.5 cm long, deciduous. Flowers 10-20, whitish outside, pink inside, 8 cm in diam.; sepals spreading, lanceolate or oblong, 4-5 cm long, 1.5-2 cm wide, acute at apex, contracted at base; petals oblanceolate, as long as sepals but narrower; lip embracing column, 5 cm long, obtriangular when expanded, 4-5 cm wide, apex 3-lobed, undulate, villose inside, lateral lobes rounded, midlobe truncate, emarginate, spur 1 cm long; column ca. 2.5 cm long, dilated at apex, narrowed downward, glabrous abaxially; anther cordate, 4.5 mm long, hirsute outside; pollinia flattened ovoid, 2 mm long, connected by broad caudicles; stigma semiorbicular; rostellum triangular, 2 mm long.

TAIPEI: Pinglin, Ito 402. ILAN: Yunshan, Su s. n. Apr 1983. TAITUNG: Lanyu Is., Su 6990, 7844.

India, Sri Lanka and southern China, through Thailand and Malaysia to Indonesia, Australia and the Pacific islands. Taiwan, broad leaved forests at low elevations throughout and Lanyu Is.