Japan Flora: Rhizomes loosely tufted; culms 70-80 cm. long； leaf-blades stiff, 2.5-3 mm. wide, the basal sheaths dark brown; spikes about 10, the ter­minal slaminate, nearly sessile, 15-20 mm. long, the lateral androgynous, broadly linear, loosely flowered, 1-3 cm. long, the upper ones nearly sessile, solitary, the lower frequently paired on unequal long peduncles, the bracts long-sheathing, the lowest one with a short bristlelike blade at the tip; perigynia about twice as long as the scales, about 3 mm. long, elliptic, faintly nerved, very sparsely hispidulous especially on the upper part, or nearly glabrous, the beak short, emarginate; stigmas 2, about 2 mm. long.  Sept.-Oct.

Honshu (Yamato Prov. and Chugoku Distr.), Shikoku (Awa); rare. Ryukyus.