Japan Flora: Rhizomes almost wanting, innovation shoots short; culms tufted, 30-100 cm. long, smooth, glabrous; leaf-blades 10-20 cm. long, 2-3 mm. wide when flat, or when involute about 1 mm. wide, minutely papillose, glabrous, rather soft, glaucous-green; ligules hyaline, ovate, 2-3 mm. long, glabrous; panicles lanceolate, pardy enclosed within the upper­most sheath, glaucous-green, branches erect or appressed to the axis, sub verticillate, very unequal; spikelets 4-6 mm. long, 3- or 4-flowered; glumes lanceolate, very acute, slightly longer than the lowest lemma, the lower 1-nerved, 2-2.5 mm. long, the upper 3-nerved, about 3 mm. long; lemmas 3-3.5 mm. long, rather acute, sparingly short-pubescent at base; anthers narrowly oblong, about 0.7 mm. long. June-Aug. Sea­shores.

Honshu (Rikuzen Prov.); very rare. Korea.