Japan Flora: Roots slender, slighdy thick ened; stems slender, 25-35 cm. long, 2-leaved near the middle, with several reduced leaves above; larger leaves subapproximate, oblong, 8-15 cm. long, 2-4 cm. wide, rounded to abruptly acuminate at apex, sheathed at base; spikes 5-10 cm. long, many-flowered, the bracts linear-lanceolate, spreading above; flowers small, greenish; sepals nearly erect, 1-nerved, obtuse, ovate, about 2 mm. long; petals slightly shorter than the sepals; lip slightly longer than the sepals, ovate, subacute, thick, ascending, spaading toward tip, with an ascending acute minute lobe on each side above the base; spur oblong, 1-1.5 mm. long. July-Aug. Grassy places and thickets in mountains;

Hokkaido (Oshima Prov.)，Honshu, Shikoku, Kyushu.