Japan Flora: Slender herb with ovoid roots; stems rather slender, 20-40 cm. long, loosely 3- to 5- leaved; leaves linear to broadly so, 8-15 cm. long, 4-8 mm. wide, acuminate; spikes 5-15 (-20) cm. long, the bracts ovate- triangular, 1-nerved, long-acuminate, shorter or slightly longer than the flowers; flowers green, not fully open; sepals oblong, very obtuse, 1-nerved, 2-2.5 mm. long, equal; petals slightly shorter than the sepals, linear-lanceolate; lip 5-8 mm. long, linear, pendulous, slightly broadened at base, 3-lobed from the middle, the lateral lobes linear, obtuse, ascending, the terminal lobe very short; spur absent; column very short. June- Aug. Grassy places in lowlands;

Hokkaido (Oshima Prov.)， Honshu, Shikoku, Kyushu; rather rare. Ryukyus, Formosa, China, Manchuria, and Korea.