Japan Flora: Whole plant blackened when dry; roots fusiform; stems 30-60 cm. long; larger leaves 1 or 2, alternate, the lowest oblong or narrowly oblong, 7-12 cm. long, 2.5-35 cm. wide, subobtuse, narrowed to base, the upper gradually smaller, narrower, acute to acuminate, the scalelike leaves several, acuminate, lanceo­late; racemes 10-25 cm. long, loosely 10- to 25-flowered; bracts broadly lanceolate, as long as the ovary, the margins usually papillose; flowers greenish white; dorsal sepal broadly ovate, obtuse, 3- to 5-nerved, 4-5 mm. long, the lateral markedly spreading, narrowly oblong, 3- to 5-nerved, 6-7 mm. long; petals erect, semi-ovate, obtuse, 3- to 4-nerved, slightly shorter than the dorsal sepal; lip broadly linear, obtuse, 5-7 mm. long; spur 12-15 mm. long, linear, pendulous, obtuse. June-July. Low mountains

Honshu, Shikoku, Kyushu; rather common.