Japan Flora: Rhizomes long-creeping; culms 10-20 cm. long; leaf-blacks firm, short-linear or narrowly lanceolate, spreading, nearly flat to involute, 3-5 cm. long, 2-4 mm. wide, long-hairy at the mouth; uppermost sheath slighdy inflated above; racemes pardy enclosed within the sheath, 3-4 cm. long, 6-8 mm. wide, densely flowered; spikelets rather appressed, narrowly oblong; second glume 1-8 mm. long, 1.8-2.2 mm. wide, biconvex; lemma oblanceo­late, about 4 mm. long, rather acute, folded; stamens 3, the anthers 2-2.5 mm. long; caryopsis obovate-oblong, slightly less than 2 mm. long, somewhat laterally flattened, glabn이ls, the hilum linear. June-Aug. Sand dunes along seashores.

Hokkaido (sw. distr.), Honshu, Shikoku, Kyushu; common. Ryukyus.