Japan Flora: Rhizomes loosely to scarcely tufted, the neck covered with dark brown straight fibers; culms 15-40 cm. long, slender, glabrous; leaf-blades 2-3 mm. wide, flat, soft, bright to yellowish green; spikes 3 or 4, distant, or the upper ones approximate, the terminal staminate, linear, long-peduncled, 1-3 cm. long, pale brownish yellow, the lateral pistillate, oblong, about 1 cm. long, somewhat loosely few-flowered, peduncled, the lowest one sometimes radical, the bracts leaflike, short- to somewhat long-sheathing; pistillate scales obovate, rounded or emarginate and cuspidate, pale; perigynia longer than the scales, 5-6 mm. long, ascend­ing, rhomboid, acutely 3-angled, yellowish green, lustrous, sparsely hispidulous, subcoriaceous, with 2 costal nerves, the beak short, erect, with a 2-toothed, hyaline tip. Dry grassy places on hills and in lowlands.

Honshu (Suruga Prov. to Kinki Distr.), Kyushu; rather rare. Formosa and Korea.