Japan flora: Rhizomes short; leaves 2 or 3, narrowly obovate-oblong, 15-20 cm. long, 3-4 cm. wide, acute, narrowly cuneate, glabrous; scapes 25-30 cm. long, glabrous, with 1 scale; racemes 5-7 cm. long, 3- to 8- flowered, glabrous, the bracts lanceolate, 8-15 mm. long, acuminate; flowers pendulous; sepals broadly lanceolate to narrowly ovate, 15-17 mm. long, 4-6 mm. wide, acuminate, mucronate, purplish; petals lanceolate, 12-15 mm. long, about 3 mm. wide, acuminate, purplish; lip erect, slightly shorter than the sepals, nearly rounded, entire, minutely fimbriate, pale yellow with darker striations; spur narrowed above, 2- 2.3 cm. long; ovary glabrous. July-Sept.

Honshu (centr. distr.), Shikoku (Mount Ishizuchi); very rare.