Culms tufted with scaly, creeping rhizomes, 50-150 cm tall, glabrous. Blades 15-30 cm long, 0.8-1.5 cm wide, glabrous. Sheath cylindrical; ligule acute, 2-3 mm long. Panicle branched, 5-40 cm long; lobed and branched at the base, branches erect to spreading. Spikelets ovate, 3-flowered, compressed, ovate, 3.5-7.5 mm long; glumes equal, as long as the spikelet, 3-nerved, apex acute, folded, keel usually wingless or inconspituously narrowly winged. Fertile lemma 2.7-4.5 mm long,weakly 5-nerved, shiny, sparingly pubescent; palea lanceolate, 2-nerved; sterile lemma vestigial, pilose.
CHIAYI: Mt. Alishan, Hsu 7443.
Widely distributed in the temperate parts of the northern Hemisphere.
