Japan Flora: Culms 30-70 cm. long, branched and decumbent or ascending at base, glabrous; leaf-blades flat, linear, 15-30 cm. long, 5-10 mm. wide, narrowed at the ends, glabrous, rarely with spreading hairs; ligules short, truncate or bifid; sheaths glabrous or ciliate; racemes 2, geminate, sessile, erect and appressed to each other, 4-7 cm. long, joints of the rachis thick, nearly glabrous; spikelets alike, broadly lanceolate to narrowly obovate, usually glabrous, 5-6 mm. long, rather acute, awned or awnless; first glume narrowly winged at tip. July-Nov. Sandy seashores.
Honshu, Shikoku, Kyushu; common and extremely variable. Korea, Manchuria, Form예 and China.