Perennial; culms erect from a usually decumbent base, often rooting at the lower nodes, 50 cm. to more than 1 m. long; sheaths all overlapping, flattened but scarcely keeled, glabrous; blades oblanceolate, gradually narrowed to the base, somewhat abruptly narrowed toward the end to an acuminate apex, scaberulous, 12-35 cm. long, 3-6.5 cm. wide at the widest place; panicles 15-30 cm. long, the branches as much as 23 cm. long, relatively few-flowered; staminate spikelets 3-4 mm. long, the first glume subobtuse, one-third to half, the second acuminate, as long as the spikelet; fertile spikelet 12-15 mm. long, the glumes equal, 8-11 mm. long, lanceolate, 3-to 5-nerved, acute or subacute, green; fruit straight or slightly curved, pubescent across the back at the summit, the pubescence extending down the sides nearly to the base, the lower part of the back and narrow margins glabrous.
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