Tall and usually erect, mostly 1–2 m; lower sheaths beset with coarse, papillose-based hairs, rarely glabrous; blades up to 25 mm wide; infl dense, often nodding, 1–3.5 dm, the spikelets almost concealed in a mass of awns 1–3 cm on the sterile lemmas; second glume with an awn 2–10 mm; fertile lemma elliptic, nearly or fully 3 times as long as wide, with a minute, withering tip, but this not set off by a line of hairs as in no. 4 [Echinochloa crusgalli (L.) P. Beauv.]; 2n=36. Marshes and wet soil, especially along the coast; Mass. to Fla. and Tex., and irregularly inland to Mich., Wis., Io. and Mo.
Home