Japan Flora: Plant somewhat tufted; culms slender, 15-40 cm，long, nodding in upper part; leaf-blades deep green, 2.5-4 mm. wide, the basal sheaths dark sanguineous in part; spikes 2-4, loosely arranged, the terminal staminate, long-peduncled, clavate-linear, 1-1.5 cm. long, longer than the others, the pistiHate linear-oblong, 1- 2.5 cm. long, loosely flowered, Iong-peduncled, nodding, the bracts short-bladed, long-sheathing; pistillate scales acute, red­dish brown; perigynia longer than the scales, 3-4.5 mm. long, suberect, ovoid-fusiform, obtusely angled, brownish green, slightly lustrous, glabrous or sparsely spinulose at tip, with 2 costal nerves, moderately long-beaked, hyaline at tip; stigmas 3, slender. June-Aug. Rather dry alpine slopes.

Hokkaido, Honshu (n. and centr. distr.). Korea, Ussuri, Sakhalin, and s. Kuriles.