Japan Flora: Pseudobulbs ovoid-globose, about 2 cm. long; leaves 3-5, membranous, imbricate at the base, broadly lanceolate to narrowly oblong, 8-15 cm. long, 2-4 cm. wide, acuminate at both ends, plicate, sheathing at base; peduncles 20-30 cm. long, erect; racemes 5-15 cm. long; bracts lanceolate, acuminate, 1-nerved, obliquely ascending, 3-6 mm. long; flowers yellowish green, witli a light purple hue; sepals about 6 mm. long, lanceolate, obtuse, the lateral ones narrowly oblong, spreading under the lip; petals linear, slightly broadened toward tip, subacute, about 7 mm. long; lip obovate-cuneate, recurved at tip, nearly truncate, shallowly grooved, as long as the lateral sepals; column narrowly wiinged. July.

Shikoku, Kyushu. Ryukyus, Formosa, s. China, and India.