Japan Flora: Rhizomes to 10 cm. long, with rather char­taceous, appressed, not inflated scales; culms erect or declinate above, 40-100 cm. long, freely branching above; leaf-blades 8- 15 cm. long, 2-5 mm. wide; panicles 10-15 cm. long, narrow, rather densely spiculose, the branches single or geminate, nearly erect; spikelets 2.5-3 mm. long; glumes broadly lanceo­late, 1.5-2 mm. long, 1-nerved, acute; awn of the lemma 5-8 mm. long; anthers 0.5-0.7 mm. long; caryopsis narrowly ob­long, 1-1.5 mm. long, the hilum punctate. Aug.-Oct. Woods in low mountains.

Honshu (centr. distr. and westw.), Kyushu.