Japan Flora: Stout, coarse perennial with stxmt rhizomes; culms 1-2.5 m. long, glabrous; leaf-blades flat, linear, 40-80 cm. long, 1-3 cm. wide, acuminate, rather firm, glabrous except at base above, very scabrous on margins, glaucescent beneath; ligules very short; sheaths glabrous or the lower coarsely hairy; panicles large, open, exserted, 25-40 cm. long, rather digitately many­racemed, the central axis densely pubescent at the base; racemes nearly sessile, often branched at base, 20-40 cm. long, slender; spikelets 5-6 mm. long, lanceolate, acuminate; callus­hairs 10-15 mm. long; glumes lanceolate, herbaceous, pale grayish brown, with hyaline margins, sparsely long-hairy, the first 2-keeled; fertile lemma awnless or with a short, included awn. Sept.-Oct Wet places in lowlands.

Hokkaido, Hon­shu, Shikoku, Kyushu; common. Northeast China, Ussuri, Korea, and n. China.