Japan Flora: Densely tufted, strict perennial; culms 20-30 cm. long, with few nodes at base, striate, very slender but rather stiff, glabrous, simple; leaf-blades filiform, 3-5 cm. long, 0.5-0.7 mm. wide, scarcely thicker than the culms, erect, tightly convolute to loosely in­volute, smooth outside, long-pilose around the mouth inside and often sparsely so or glabrous on margin; ligules very short, hyaline, 0.5 mm. long; spikes solitary on the top of the culms, 7-10 cm. long, about 2 mm. across; rachis slender, smooth; spikelets sessile, nearly cylindric, 3- or 4-flowcred, 4-6 mm. long, 1.2 mm. wide, lead-green; glumes linear-lanceolate, acu­minate, scarious, scaberulous above; lemmas narrowly oblong, about 3 mm. long, smooth or obsoletely punctate, shallowly bifid, with 2 hyaline, semirounded erose tips, the lateral nerve excurrent as a minute mucro, the midnerve excurrent as an erect scaberulous delicate awn 1-2 mm. long; callus with bairs about 1/6-1/5 as long as the lemma; rachilla-joints slender, glabrous, about half as long as the lemma. Oct.

Kyushu (Hirado Isl. in Hizen); very rare. Korea.