Japan Flora: Slender, delicate peren­nial; culms erect, long-creeping at base, glabrous, 5-10 cm. long, with pubescent nodes; leaf-blades membranous, flat, broadly lanceolate, 15-30 mm. long, 4-8 mm. wide, short- acuminate, cuneate at base, sparsely long-pilose on both sides, many-nerved; sheaths 7-15 mm. long, long-ciliate; ligule a series of short hairs; panicles loosely flowered, broadly ovate, 3-5 cm. long, the branches slender, ascending; spikelets green, about 1.5 mm. long, broadly elliptic to nearly globose; glumes equal, 3- to 7-nerved, rounded at apex, with few bristles of unequal length on upper half; lemmas equal, elliptic, 1.2-1.3 mm. long, loosely puberulent Sept-Oct. Wet places. 

Honshu (Kanto Distr. and westw.), Shikoku, Kyushu; rather rare. s. Korea.