Not rhizomatous. Culms erect, 1–2 mm wide, wiry; flowering culms 15–45 cm high. Leaves: basal sheaths usually glabrous; orifice glabrous or sometimes bearded; ligule a ciliolate membrane, 0.3–0.5 mm long; blade usually flat, 4–17 cm long, 3–6 mm wide, acute, bright pale green. Inflorescences digitate or rarely with branches whorled; branches 4–8, 4–9 cm long, flexible. Spikelets 1.6–2 (–2.2) mm long, disarticulating between the glumes; rachilla prolonged, terminating at a vestigial floret or naked. Glumes ±equal or unequal in length, 45–90% as long as the basal lemma, ±equal in width, lanceolate; lower glume 0.7–1.2 (–1.4) mm long; upper glume 1–1.4 (–1.9) mm long. Basal lemma 1.6–2 (–2.2) mm long; keel wingless; hairs extending the length of the keel and arising in the lower half on the submargins. Anthers 0.5–0.6 mm long, yellow or purple.