Japan Flora: Rather firm, pale green perennial without stolons; culms erect, slender, 100-150 cm. long, with 10 or more nodes; leaf-blades loosely involute, thin but rather firm, scabrous, 15-30 cm. long, 4-10 mm. wide, sheaths longer than the internodes, sometimes pubescent or retrorsely scabrous; ligules truncate, 0.2-0.3 mm. long; panicles at length exserted, erect, 25-50 cm. long, the branches subverticillate, spreading, slender but firm; pedicels short-pilose; spikelets 7-10 mm. long, 3- or 4-flowered, the florets all nearly equal; glumes lustrous, rather acute, the first narrowly ovate, 2.5-3 mm. long, 1-nerved, the second broadly lanceolate, 4.5 mm. long, with a pair of slender lateral nerves; lemmas pale green with hyaline margins, obtuse, 7- to 9-nerved, glabrous, 4-6 mm. long; caryopsis broadly lanceolate, 3 mm. long.  Aug.-Sept. Thin woods; Honshu (Kanto Distr. and westw.), Shikoku, Kyushu; rather rare. Koreaand China.

var. pilosella Honda. Usuge-michi-shiba. Lemmas with a few long appressed setose hairs. Kyushu (Higo Prov.).