Japan Flora: Rather tufted glabrous annual; culms 15-50 cm. long; leaf¬blades flat, rather soft, 2-10 cm. long, 2-5 mm. wide; ligules membranous, broadly ovate to semi-rounded, 2-4 mm. long; panicles cylindric, 2-8 cm. long, 5-6 mm. wide, very dense, yellowish green, lusterless; spikelets 2-2.5 mm. long, narrowly cuneate, rather flattened; glumes coriaceous, scaberulous, ob¬tusely keeled, obliquely truncate at apex, rigidly mucronate; lemmas about I mm. long, glabrous; anthers ellipsoidal, yellowish, 0.3-0.5 mm. long. May-June. In lowland grassy places;

Honshu, Shikoku, Kyushu. China, Siberia, and the Mediterranean region.