Echinochloa crusgalli (L.) P.Beauv.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Poaceae
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Scientific Name
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Description
Species Description - Stout, often branched from the decumbent base; sheaths glabrous; blades 5–30 mm wide; infl 1–2.5 dm, erect, with usually 15–25 appressed or spreading branches 2–4 cm (to 6 cm in var. frumentacea), the longer ones rebranched; main axis and branches of the infl beset with stout, often papillate-based setae typically as long as or longer than the spikelets; spikelets 2.8–4 mm; second glume and sterile lemma variously scabrous, hispid, or hirsute to subglabrous, but the hairs usually not papillate-based, the glume awnless or nearly so; fertile lemma 2.5–3.5 mm, ca twice as long as wide, the short, soft beak withering, somewhat inflexed, sharply differentiated from the obtuse body, marked by a line of minute bristles at base; 2n=54. Native of Eurasia, widespread in the U.S., Can., and Mex. Two vars.
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Common Names
barnyard-grass