Agropogon lutosus (Poir.) P. Fourn.

Polypogon littoralis Smith, Comp. Fl. Brit. ed. 2. 13. 1816
Agrostis littoralis With. Brit. PI. ed. 3. 2: 129. 1796. Not A. littoralis Lam. 1791. Agrostis lutosa Poir. in Lam. Encyc. Suppl. 1: 249. 1810. (Based on A. littoralis With.) Vilfa lutosa Beauv. Agrost. 16, 148, 181. 1812. (Based on Agrostis lutosa Poir.) Polypogon interruptus H.B.K. Nov. Gen. & Sp. 1: 134. 1815. (Type from Venezuela.) Alopecurus interruptus Poir. in Lam. Encyc. Suppl. 5: 495. 1817. (Based on Polypogon interruptus
H.B.K.) Polypogon lutosus Hitchc. Bull. U. S. Dep. Agr. 772: 138. 1920. (Based on Agrostis lutosus Poir.)
Perennial; culms tufted, geniculate at base, glabrous, 30-80 cm. tall, 2or 3-noded, or, in tall geniculate plants, several-noded ; sheaths glabrous, the upper sometimes inflated; ligule 2-5 mm. long or the uppermost longer, scaberulous, nerved, laciniate; blades more or less scabrous, 5-15 cm. long, commonly 4-6 mm. wide; panicle oblong, more or less interrupted or lobed, 5-15 cm. long, often purplish; glumes 2.5-3 mm. long, scabrous, the awns 3-5 mm. long; lemma smooth and shining, 1 mm. long, minutely toothed at the truncate apex, the awn exceeding the glumes.
Type locality: England.
Distribution: Ditches and wet places at low altitudes, British Columbia to New Mexico and California, and eastward to Louisiana, and, in a few localities, to Alabama; Bermuda; also Mexico to Argentina; native of the Eastern Hemisphere.