Japan Flora: Green, slender perennial with elongate slender rhizomes and stolons; culms in loose tufts, 30-60 cm. long, slender, with brownish hyaline sheaths at base; leaf-blades deep green, elongate, loosely involute, 1.5-3 mm. wide; ligules 0.2-0.3 mm. long, truncate; panicles nodding, very loose, 8-15 cm. long, the branches elongate, spreading, solitary, scabrous; spikelets pale green, somewhat lustrous, 7-10 mm. long, 3- to 5-flowered; glumes ovate, obtuse, membranous, 1-1.5 mm. long; lemmas broadly lanceolate, acute, 5-7 mm. long; awn terminal, very slender, 5-7 mm. long, erect, slightly flexuous; anthers elliptic. May-June. Woods in low mountains.

Hokkaido, Hon- shu, Shikoku, Kyushu; very common.  Formosa and China.

Var. breviaristata Ohwi. Lemmas awnless or nearly so.  Honshu (M이int Ibuki in Omi and Mount Omine in Yamato) and Shikoku (mount Kamegamori); rare