Japan Flora: Perennial with creeping rhizomes; culms 40-60 cm. long, glabrous; leaf-blades 10-15 cm. long, 3-8 mm. wide, nearly flat, somewhat firm; ligules less than 2 mm. long, truncate; panicles erect, 10-15 cm. long, rather dense, the branches subverticil late, short; spikelets narrowly oblong, 12-25 mm. long, pale green, sometimes slightly purple- tinged, 6- to 8-flowered; glumes acute, the lower 4-5 mm.，the upper 6-7 mm. long; lemmas narrowly oblong, about 10 mm. long, membranous, obtuse, with 2 minute teeth, the awn wanting or to 1 mm. long between the teeth; anthers linear, orange-yellow, 4-5 mm. long.

Hokkaido, Kyushu; very rare; possibly not indigenous.  Europe, Siberia, Mongolia, Manchuria, and N. America.