Perennial; culms 1-2 m. high., coarse, erect; sheaths shorter than the inter-nodes, papillose or papillose-pilose toward the summit, nearly glabrous toward the base, somewhat auriculate; ligule membranaceous, truncate, 2-3 mm. long; blades 15-40 cm. long, 1.5-3 cm. wide, somewhat narrowed to a rounded base, glabrous on both surfaces, the margins scabrous; panicles 40-60 cm. long, the long, angular, nearly simple, ascending branches in dense rather distant verticils, pubescent and hispid in the axils, naked in the lower half; spikelets 3.5 mm. long, glabrous, short-pedicellate, paired, the pairs distant, the first glume acute, about one-third as long as the spikelet; fruit 2.8 mm. long, pointed, smooth and shining.
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