Japan Flora: Terrestrial herb with cylindrical pseudobulbs, the internodes to 4 cm. long; leaves 2 or 3, obliquely ovate to elliptic, 5-12 cm. long, 2.5-5 cm. wide, acute to abruptly acuminate, acute and short-sheathed at base; peduncles 15-30 cm. long; racemes loosely 5- to 10-flowered, 2/5-1/2 the length of the peduncles; bracts dekoid, spreading, 1-nerved, membranous, 1-2 mm. long, acute; flowers dark purple; sepals narrowly oblong, obtuse, the lateral ones spreading, about 5 mm. long; petals linear- oblanceolate, obtuse, about 5 mm. long; lip cuneate-obovate, gradually recurved at tip, shallowly grooved on the upper surface, retuse, the appendages at base subulate; column about 3 mm. long, narrowly winged; capsules pedicelled, erect, clavate- fusiform, 15-25 mm. long. June-July. Woods;

Honshu (Tokaido, Kinki, and westw.), Shikoku, Kyushu.