Japan Flora: Pseudobulbs ovoid-globose, 1.5-2 cm. long; leaves 1 or 2, narrowly to broadly lanceolate, 20-30 cm. long, 1-3 cm. wide, gradually acuminate at both ends, short-petiolate; scapes 30-40 cm. long, with 2 membranous sheaths on the lower part; racemes 10-20 cm. long, relatively many-flowered; flowers yellowish brown; bracts membranous, linear, 4-6 mm. long, acuminate; sepals and petak ascending, lanceolate, 8-10 mm. long, subobtuse; petals closely contiguous on the dorsal sepal; lip ascending, as long as the sepals, white with dark purple spots, 3-lobed from the base, the lateral lobes lanceolate, 4-5 mm. long, obtuse, erect, the terminal lobe cuneate-obovate, denticulate, 2-ridged on the inside; column about 9 mm. long; capsules pendulous, short-pedicelled, narrowly fusiform, about 20 mm. long. Woods in mountains;

Hokkaido, Honshu, Shikoku, Kyushu; rather rare. China, Ussuri, Sakhalin, s. Kuriles, and Kamchatka.