Japan Flora: Rhizomes elongate, slender; culms 2(M0 cm. long, scabrous, often 1-leaved; leaf-blades flat, 2.5-4 mm. wide, somewhat glaucous beneath, the basal sheaths pale; spikes 2-4, loosely arranged, the terminal staminate, linear, pale green, 3 cm. long, peduncled, the lateral pistillate, ellipsoidal to narrowly oblong, 1-2 cm. long, densely many-flowered, nod­ding on slender peduncles, the lower bracts leaflike, longer than the culm, sheathless; pistillate scales narrowly ovate, acuminate, pale; 1.5- perigynia longer than the scales, 3.5-4 mm. long, spreading, ovoid, nerved, slightly inflated, membranous, pale green, glabrous, gradually long-beaked, minutely 2- toothed and hyaline at tip; stigmas 3, persistent, brown, slen­der, slightly longer than the perigynium. Apr.-June.

Woods in lowlands; Hokkaido, Honshu, Shikoku, Kyushu; rather common. Korea and China.