Japan Flora: Stoloniferous perennial; culms 80-100 cm. long; leaf­blades thin, 20-30 cm. long, 5-8 mm. wide, rather flat, vivid- green, scabrous above; panicles nodding to pendulous, loose, 15-25 cm. long, the branches slender, 2- to 5_nate, slightly scabrous; spikelets numerous, ovate or oblong, 4-7 mm. long, usually purpurascent, 3- to 5-flowered; glumes narrowly ob­long, obtuse, hyaline, often somewhat brown- and purple- tinged, 1-nerved, the lower about 1 mm., the upper 1.3-15 mm. long; lemmas narrowly oblong, 3-3.5 mm. long, thin, 3-nerved, with hyaline margins.---- July-Aug. Wet places in woods.

Hokkaido, Honshu (centr. and n. distr.); rather com­mon. Korea, Kuriles, Sakhalin, Manchuria, Kamchatka, e. Siberia, and w. Europe.