Japan Flora: 5. Rather tufted perennial; culms usu­ally erect, 30-80 cm. long; leaf-blades flat, linear, 15-30 long, 5-10 mm. wide; ligules truncate, 0.5-15 mm. long, glabrous; sheaths slighdy folded or nearly terete, usually with a few long hairs on the mouth; racemes 2-10, 3-10 cm. long, densely flowered, ascending, with a few long hairs in the axils; spikelets pale green, elliptic to broadly so, or obovate-elliptic, 2-2.5 mm. long, glabrous or spreading-puberulent on the mar­gins, rounded to very obtuse; second glume and sterile lemma thinly membranous, 3-nerved; fertile lemma as long as the sterile one, coriaceous, lustrous, brown when mature. Aug.-Oct. Lowlands.

Honshu (Tokaidd and westw.), Shi­koku, Kyushu. Ryukyus, Formosa, China, and in tropical regions generally.