Japan Flora: Gla­brous annual; culms erect, 30-60 cm. long; leaf-blades 3-6 mm. wide; panicles 7-15 cm. long, nodding, the branches sub- verticillate; spikelets narrowly oblong, 15-20 mm. long, slightly inflated, 6-8 mm. wide, 5- to 15-flowercd; lower glume lanceo­late, 3- to 5-nerved, upper glume oblong, 6-7 mm. long, obtuse, 7-nerved; lemmas elliptic, 7-nerved, obtuse，chartaceous, lead- green, nearly smooth, glabrous, 2-toothed at apex, the awn somewhat flexuous, shorter than the lemma, those of the lower florets often absent; anthers about 2 mm. long.     Naturalized in Hokkaido and Honshu (n. and centr. distr.). Europe and Siberia.