Short-lived perennial. Culms erect or geniculate at base, new tufts at nodes but not rooting, up to 60 cm tall, ca. 2 mm in diam. Leaf sheaths lightly keeled, glabrous, pilose at collar; leaf blades 3.5–11.5 cm × 0.5–1.25(–3) mm, glabrous except for sparse long hairs near ligule; ligule ca. 0.2 mm, ciliolate. Panicle lax to contracted, 4–10 × 0.5–5 cm; branches solitary, lowermost 1.2–3 cm, erect or spreading, bare in lower 1/5–1/3, scaberulous, branchlets appressed, main axils often pilose; pedicels 0.5–3 mm, shorter than spikelet. Spikelets 2.8–5(–7) × 1.5–2.3 mm, greenish yellow tinged light purple, florets 12–18, closely overlapping, disarticulating from base upward; rachilla persistent; glumes unequal, lower glume 0.5–1 mm, upper glume 0.75–1.4 mm, both acute; lemmas 1.1–1.5 mm, lateral veins faint, apex subacute. Palea persistent, keels ciliolate. Stamens 3; anthers 0.2–0.4 mm. Caryopsis slightly compressed, ellipsoidal, 0.5–0.6 mm. Fr. Nov.
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