Japan Flora: culms tufted, to 1 m.  long; leaves 3-4 mm. wide, deep green; spikes numerous, androgynous, solitary to ternate at each node, often sparsely branching below, loosely rather many-flowered, 15-3 cm. long, the lower bracts leaflike, long-sheathing; pistillate scales acute; perigynia nearly as long as the scales, suberect, elliptic to broadly ovate, 3.5-4 mm. long, about 1.5 mm. wide, glabrous, minutely hispidulous-scabrous on the margins, short-stipitate, moderately long-beaked, with a minutely 2-toothed hyaline tip; stigmas 2, about 3 mm. long.  Sept.-Oct.  Woods;

Honshu (Kii Prov. and Oki Isl.), Kyushu (Kagoshima in Satsuma Prov. and Yakushima); rare, China.