Perennial. Culms erect or procumbent and rooting from lower nodes, 60–110 cm tall. Leaf blades linear, flat, 7–25 cm, 3–7.5 mm wide, scabrid on both surfaces, apex acute; ligule 3–6 mm. Panicle lanceolate to narrowly lanceolate, lobed, rather dense or sometimes loose, 10–20 cm; branches subverticillate, densely spinulose. Spikelets lanceolate, 3–4 mm; glumes oblong, scabrid or shortly bristly, apex acute, awnless; lemma 2–2.5 mm, apex obtuse or with deciduous awnlet up to 1.5 mm; palea 2/3 as long as lemma. Stamens 3, anthers 1–1.5 mm.
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