Japan Flora: Glabrous, densely tufted perennial; culms 40-60 cm. long, smooth, covered by the leaf-sheaths; leaf-blades often exceed­ing the culms in length, strongly convolute, 1-1.5 mm. wide, 1-4 mm. wide when flat, scabrous above, gradually narrowed to a filiform tip, hairy at the mouth; sheaths terete; ligule a series of fine hairs; spikes 8-12 cm. long, dense, the axis sca­brous, bearing ascending involucres, each with 1 spikelet; bristles unequal, scabrous, whitish, 1-2 cm. long; pedicels 0.7-1 mm. long, hairy; spikelets lanceolate, about 6 mm. long, acu­minate; first glume small, ovate, 1/5-1/4 as long as the spike­let, nerveless, the second 1/4-1/3 as long as the spikelet, about 1.5 mm. long; sterile lemma acuminate, 3- to 5-nerved; fertile lemma as long as the sterile one, awn-pointed. Oct.-Nov. Near seashores.

Kyushu (s. distr.). Bonins, Ryukyus, and Amami-Oshima.