Japan Flora: Rhizomes abbreviated; culms densely tufted, to 60 cm. long, obtusely angled, smooth; leaf-blades 1.5-25 mm. wide, soft, deep gi毛en; spikes 2-5(10), pistillate with a few staminate flowers at the base, ovoid to ovoid-globular, 6-10 mm. long, loosely aggregated into a rather short head 3-8 cm. long, the lower bracts leafy, elongate, much longer than the head; pistillate scales pale, membranous, ovate; perigynia appressed, much longer than the scales, compressed, oval, 4 mm. long, light green, rather broad, the wings broad, scabrous-margined, the beak short, rather broad, sulcate in front, the tip shallowly bifid; achenes small, tightly inclosed; stigmas 2. May-June. Forests.

Hokkaido (Islii-kari Prov.), Honshu, Shikoku, and Kyushu.