Japan Flora: Perennials with elon­gate, rather thick rhizomes covered with small scales; culms erect, 80-120 cm. long, glabrous; leaf-blades flat, linear to linear-lanceolate, usually 25-40 cm. long, 1-1.5 cm. wide, pilose or glabrescent, narrowed to the obtuse base; ligules hyaline, 1-1.5 mm. long, brownish; sheaths shorter than the leaf-blades; panicles erect, 15-25 cm. long, the axis and branches terete, smooth, resinously lustrous in life, the branches erect or ascending, to 4-6 cm. long, usually slightly branched, often falsely verticillate; racemes linear, 2—3.5 cm. long, erect, the joints and pedicels 2-3 mm. long, thickened above with a tuft of spreading hairs about 1 mm. long at apex; spikelets narrowly ovate, terete, 4.5-5.5 mm. long, acute, with spreading hairs about 2 mm. long, pale green, awned; glumes rather coriaceous, with raised nerves; awn of fertile Iemma perfect, 7-12 mm. long.  Aug.-Oct. Slopes in mountains. 

Hokkaido, Honshu, Shikoku, Kyushu; rather common. Korea, Northeast China, and Siberia.