Japan Flora: Plant loosely tufted, with short ascending innovations; culms slender, 15-40 cm. long, glabrous, 3-angled, nodding above; leaf-blades rather short, flat, 2-3 mm. wide, the basal sheaths partially dark red; spikes 3-5, distant, sparsely flowered, the lower ones often very long, on filiform peduncles, the terminal staminate, Jin的:r, 2-3 cm. long, the lateral pistillate, narrowly cylindric, long-ped uncled, pendulous, dark reddish brown, 2-3 cm. long, the bracts bristleform, long-sheathing at base; pistillate scales oblong, rounded at apex, dark brown; perigynia longer than the scales, 6-8 mm. long, erect, membranous, lustrous, compressed-trigonous, dktinctly but slenderly nerved, stramineous and often fuscous in upper part, slightly pubescent especially along the margins, short-stipitate, gradually long- beaked, with an obliquely truncate, hyaline tip; stigmas 3. July-Aug. Rocky and gravelly places in alpine regions.

Hon­shu (n. and centr. distr.); common.

var. taisetsuensis Akiyama. Differs in the broader, oblong-lanceolate pe- rigynia with a shorter beak. Alpine regions; Hokkaido. Kuriles and Sakhalin (Mt. Ktausipal)