Perennial 270-700 mm high; rhizomatous. Leaf blade 45-150 x 1-4 mm. Inflorescence dichotomously branched, axils without long hairs on the pulvinus; spikelets large and solitary at the branchlet apices. Spikelet 2.0-2.9 mm long; glumes unequal; lower glume 1/3 as long as spikelet; upper glume 2/3 as long as spikelet; lemma as long as spikelet, apex truncate; anther 1.2-2.0 mm long.
Perennial, rhizomatous, up to 0.7 m high. Leaf blades 45-150 mm long, 1-4 mm wide. Spikelets 2.0-2.9 mm long. Panicle dichotomously branched, without long hairs in axils; spikelets large and solitary at branchlet tips.