Annual; culms slender, 20-135 cm. high, erect from a geniculate base, some-times rooting at the lower nodes, branching at the lower and middle nodes; sheaths mostly much shorter than the internodes, keeled, glabrous to papillose-pilose; ligule about 0.3 mm. long; blades 3-30 cm. long, 6-20 mm. wide, thin, the lower tapering to a narrow base, the upper ones rounded to cordate, glabrous to papillose-pilose on both surfaces, the margins scabrous, papillose-ciliate toward the base; panicles terminal and axillary, composed of 6-35 slender, solitary or fascicled, ascending or arcuate-spreading racemes, the lower ones 3-8 cm. long, rather dis-tant, the upper ones gradually approximate and shorter; rachis narrowly winged, 0.5-0.6 mm. wide, with scattered long white hairs on the margins; spikelets 1.5-1.6 mm. long, paired, on long slender pedicels, elliptic, subacute, the glume and sterile lemma equal, thin, softly and rather densely pubescent; fruit 1.5 mm. long, smooth and shining.
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