Annual or short-lived perennial, tufted. Culms loosely ascending or decumbent at base and rooting from lower nodes, 30–90 cm tall, 3-or 4-noded. Leaf sheaths glabrous; leaf blades linear, flat, 3–20 cm × 3–5 mm, both surfaces scabrid; ligule 2.5–6 mm, apex lacerate. Panicle lanceolate to ovate in outline, 10–30 cm, open or somewhat contracted; branches 2–7 at each node, 2–5 cm, scabrid, bearing branchlets mainly in distal half. Spikelets 3–4 mm, green or purple; glumes oblong-lanceolate, lower glume slightly longer than upper glume, keel conspicuously scabrid-hispidulous, apex acuminate, upper glume scabrid upward on keel, apex acute; callus hairs 0.4–0.5 mm; lemma ca. 2/3 spikelet length, back villous except below apex, awned at or near lower 1/3, apex truncate, erose; awn geniculate, 3–4 mm; palea usually ca. 1/3 length of lemma. Anthers 0.7–1.5 mm. Fl. Aug.
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