Stoloniferous perennial; culms as much as 6 m. long, coarse, decumbent at the base and rooting at the lower nodes, often geniculate, the nodes densely villous; sheaths mostly longer than the internodes, papillose or papillose-pilose, densely pubescent on the collar; ligule ciliate, 0.5-1 mm. long; blades 10-25 cm. long, 8-15 mm. wide, acuminate, the margins strongly scabrous; panicles 10-20 cm. long with several solitary or fas- cicled spreading racemes; spikelets 3 mm. long, glabrous, pointed, the first glume 1 mm. long, acute, the pedicels bearing a few long stiff hairs below the spikelets; fruit about 2.5 mm. long, obtuse, minutely transversely rugose.