Japan Flora: Rhizomes short, culms 60-100 cm. long, retrorsely short-pubescent; leaf-blades deep green, nearly flat, 25-40 cm. long, 4-7 mm. broad; sheaths pilose; ligules semirounded, 1-2 mm. long; panicles nodding, deep green, 20-30 cm. long, very loose, the branches geminate, elongate, scabrous; spikelets loosely 6- to 10-flowered, 3-4 cm. long; glumes linear-lanceolate, acuminate, the lower 5-7 mm., the upper &-12 mm. long; lemmas narrowly lanceolate, 12-15 mm. long, the awn erect, as long as to half as long as the lemma; anthers 1.5-2 mm. long.  June-July. Woods. 

Hok­kaido, Honshu, Shikoku, Kyushu; very common. s. Korea and China