Annual 2–9 dm; culms very slender, solitary or tufted, erect or spreading; blades thin, 5–15 cm × 5–10 mm, narrowed to the base, glabrous; panicle very lax and diffuse, 5–20 cm, its very slender branches widely spreading; spikelets narrowly obovoid, acute, 1.7–2.1 mm; first glume triangular, 0.5–0.8 mm; second glume and sterile lemma obscurely veined, distinctly verrucose; 2n=36. Wet woods and shores; e. Mass. to Fla. and Tex., mostly on the coastal plain, and also inland in Tenn., Ky., O., ne. Ind., and sw. Mich.
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