Annual 3–10 dm, branched from the base; sheaths smooth; ligules membranous, erose-lacerate, 2–5 mm; lvs scaberulous, elongate, 3–5 mm wide; infl a freely branching, fairly dense panicle 1–2 dm, the branches ascending or spreading at anthesis, naked at base, forking at or above the middle; spikelets 2.4–3.2 mm; glumes lance acuminate, the lower 1-veined, the upper 3-veined; lemma about as long as the second glume; shortly bearded at base, scabrous distally, and bearing just below the tip a straight rough awn 5–12 mm; rachilla prolonged 0.5 mm; 2n=14. Native of Europe, sparingly intr. in waste places from N. Engl. to Md., O., s. Ont., and Mich. (Agrostis s.)
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