Culms coarse, semi-woody, 1-4 m. high, erect, single or usually several together in a loose clump, from a woody branching base, the upper internodes very short; sheaths glabrous, sometimes ciliate on the margins, the lower shorter than the internodes, the upper ones closely overlapping; ligule membranaceous, about 1 mm. long; blades 15-40 cm. long, 2-5 cm. wide, often distichous, acuminate, cordate-clasping, glabrous, the margins scabrous; panicles as much as 1 m. long, the lower branches whorled, naked below, ascending or finally spreading, diffuse, as much as 40 cm. long; spikelets 3 mm. long, the lateral ones short-pedicellate.
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