Japan Flora: Rhizomatous perennial; culms 20-60 cm. long, erect, strongly flattened, smooth; leaf-blades nearly flat, green, 7-15 cm. long, 1.5-3 mm. wide; ligules truncate to semirounded, short; panicles erect, rather firm, densely spiculose from near the base, deep green, lanceolate, 3-7 cm. long, the branches 2- or 3-nate, sca­brous, 1-2 cm. long; spikelets 3-5 mm. long, 3- to 6-flowered, short-pedicel led; glumes about equal, 3-nerved, broadly lanceo­late, rather acute; lemmas 2-3 mm. long, obtuse, bronzed to­ward the margin, glabrous on the sides, with rather obscure intermediate nerves, the keel and marginal nerves pubescent only near the base, the web short, not copious; anthers 0.8-1.2 mm. long. May-July. Naturalized.

Hokkaido, Honshu; rather rare. Europe and Siberia.