Annual, tufted. Culms ascending or decumbent at base, 15–60 cm tall, often branched, rooting at lower node, nodes hispid or villous. Leaf sheaths loose, lower longer than internodes, usually glabrous, occasionally margins villous; leaf blades narrowly lanceolate, flat, thin, 5–15 cm × 5–15 mm, hispid, villous with tubercle-based hairs or shortly hairy, margins wavy; ligule 0.3–1.5 mm. Panicle narrow, 6–18 cm; branches loosely ascending, 1.5–7 cm, fascicled at lower nodes, paired or solitary toward apex; spikelets in pairs or threes; pedicels scabrid, appressed. Spikelets 2–4 mm, base very shortly hairy or glabrous; glumes equal or lower glume slightly longer, glabrous, scabrid, apex acute, acuminate or awned; glume awns 1–2.5 mm; lemma faintly 1-veined, typically awned from emarginate apex, lower spikelets in panicle occasionally awnless or mucronate; awn geniculate, column 2–3 mm, bristle ca. 7 mm. Fl. and fr. Aug–Oct.
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