Bromus rigidus Roth

• Authority

  Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

• Family

  Poaceae

• Scientific Name

  Bromus rigidus Roth

• Description

  Species Description - Annual 3–8 dm; culms smooth; sheaths and blades pilose, the blades 3–6 mm wide; ligule 2–4(–5.5) mm; infl relatively long, 1–2 dm, with erect or spreading branches (or the lowest reflexed) each bearing 1 or 2 4–7-fld spikelets 30–40+ mm (to 9 cm incl. the awns); glumes subulate, the first 13–20 mm, 1(–3)-veined, the second 20–30 mm, 3-veined; lemmas subulate, 22–30 mm, 5-veined, scabrously short-hairy, 1–1.5 mm wide in side-view, the scarious teeth 3–6 mm; awns (30–)35–60 mm; palea shorter than the lemma; anthers 0.7–1.5 mm; 2n=28, 42, 56, 70. Native of the Mediterranean region, now widely intr. in w. U.S., and casually adventive in our range.

• Common Names

  ripgut-grass