Perennial; culms 25-90 cm. long, erect from a decumbent base, spreading or creeping, freely branching, rooting at the lower nodes; sheaths shorter than the internodes or the lower ones overlapping, compressed, keeled, glabrous, the margins usually ciliate; ligule membranaceous, 1-1.5 mm. long; blades 4-16 cm. long, 5-15 mm. wide, lanceolate, acuminate, rounded at the base, glabrous or pubescent with a few coarse hairs on the upper surface at the base, the margins scabrous and often more or less papillose-ciliate; peduncles 1-4 from the terminal sheaths, finally elongate; racemes 1-5, 2-6 cm. long, arcuate, the rachis narrow, glabrous, slightly flexuous, with a few long hairs at the base; spikelets paired, 1.8-2 mm. long, obovate, glabrous, the first glume usually obsolete, the second glume obtuse, about three-fourths as long as the spikelet; fruit as long as the sterile lemma, pale, striate.
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