Tufted perennial 250-400(-700) mm high; rhizomatous. Leaf blade 80-350 x 4-7 mm. Inflorescence much longer than wide, branches not whorled, spreading almost horizontally at maturity. Spikelet 2.0-2.6 mm long; glumes unequal; lower glume 1/3 as long as spikelet, nerveless; upper glume 2/3 as long as spikelet, apex acute; lemma as long as spikelet; anther 0.7-1.0 mm long.