Japan Flora: Rhizomes very short; culms tufted, 1 公-50 cm. long, obtusely 3-angled, stiff: leaves 1- 3 mm. wide; inflorescence simple, corymbose or capitate; bracts 3 to 5, much longer than the inflorescence; rays of in­florescence to 7 cm. long; spikelets fascicled, nearly erect, linear, laterally compressed, 1-2.5 cm. long, 1.5 mm. wide, usually somewhat reddish; scales nearly erect, narrowly ovate, 1.5-2 mm. long, rather obtuse; achenes half as long as the scale, narrowly obovate, compressed-biconvex, brown, some­what truncate at apex; stigmas 3, rarely 2. Aug.-Oct. Sandy places near seashores.

Honshu (Kanto Distr. and westw.), Shikoku, Kyushu. Widespread in warmer parts of the world.