Perennial, rhizomatous and stoloniferous (and mat-forming), up to 350 mm tall. Rhizomes knotty, much-branched. Leaf blades 20-90 mm long, 3-8 mm wide. Spikelets 3-4 mm long, 1 mm wide. Racemes 2-5, digitate, 30-77 mm long; lower glume a well developed scale up to 1 mm long; upper glume half to two-thirds the length of spikelet; upper glume and lower lemma glabrous or hairy along margins.