Japan Flora: Culms radier stout, tufted, 40-80 cm. long; leaf-blades 10-20 cm. long, li-l mm wide, flat, glabrous, green; spikes erect, 10-20 cm. long; spikelets loosely arranged, pale green, sometimes tinged with dull purple, becoming brownish below when mature, 17- 22 mm. long, 4- to 7-flowered, appressed; glumes broadly lance- olate, 3(-5) -nerved, 6-8 mm. long; lemmas glabrous, nearly smooth, with very narrow, hyaline margins, the awn rather stout, straight, 2.5-3 cm. long. May-July. Wet grassy places in lowlands.

Honshu, Kyushu; rather common. China.