Japan Flora: Glabrous or glabresccnt perennial with short rhizomes; culms 60-80 cm. long, with few, short, sheathing leaves at base; cauline blades lanceolate to linear-lanceohtc, completely flat, usually glabrous, membranous, 15-20 cm. long, 1-1.5 cm. wide, cuneate at base; ligules semirounded to truncate, glabrous, 0.5-1.5 mm. long; sheaths shorter than the blades, glabrous; panicles exserted, 8-12 cm. long, the branches falsely verticillate or solitary, sometimes slightly branched, glabrous, ascending, to 2-3 cm. long; racemes 6-8 mm. long, with 3 to 5 spikelets, the joints and pedicels 2-3 mm. long, thickened above, with a tuft of spreading, white or reddish hairs less than 1 mm. long; spikelets narrowly ovate, 4-5 mm. long, acute, terete, nerved, sparsely white-pilose; glumes firmly herbaceous,pale green, or slightly purplish, scaberulous, the first 2-denticulate, the second awn-pointed; awn of fertile lemma perfect, 7-8 mm. long. June-Aug. Mountains;
Honshu (Japan Sea side o£ centr. and n. distr.); rather rare.