Plants rhizomatous, decumbent, mat-forming. Culms 10–26 cm high, usually densely hairy. Leaves distinctly distichous, usually crowded particularly toward base; ligule 0.2–0.5 mm long, ciliolate; blade flat or involute, 1–4.5 cm long, 2–4 mm wide, abaxially glabrous or puberulous and hirsute (with short stiff hairs), discolorous. Raceme 0.4–2.6 cm long; rachis densely puberulous. Spikelets shortly pedicellate or subsessile, 3.3–5 mm long. Glumes unequal, with longer one c. 1/5 length of remainder of spikelet; lower glume 0.7–1 mm long, keeled, 3 or 5-nerved; upper glume 1–1.7 mm long, obtuse or truncate, 5-nerved. Sterile florets: lemmas acute to truncate, usually muticous or mucronate, with nerves slightly raised, usually puberulous or glabrous; upper lemma 3–4.7 mm long. Bisexual floret: lemma 2.8–4.1 mm long, 7-nerved, usually puberulous or glabrous; stamens 4.