Bromus commutatus Schrad.

  • 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 commutatus Schrad.

  • Description

    Species Description - Annual 3–12 dm, the culms glabrous, or puberulent below the nodes; lower sheaths softly retrorse-pilose, the upper glabrous or nearly so; blades flat, 1–7 mm wide, pilose; ligule 0.5–2.5 mm; panicle relatively short, 4–15(–20) cm, broad and open, the branches rather stiffly spreading or ascending, not flexuous or drooping, the pedicels mostly longer than the spikelets; spikelets 10–18(–30) mm, 4–10(12)-fld, slightly compressed; glumes scabrous or puberulent, the first 5–6(–7) mm, 3- or 5-veined, the second 6–7(–8.5) mm, 5–9-veined; lemmas 7–10 mm, 1.7–2.5 mm wide in side view, the veins faint, the terminal teeth not over 2 mm; awns 5–12 mm, straight or nearly so; palea less than 1.5 mm shorter than the lemma; anthers 0.7–1.7 mm; rachilla-joints 1.5–2 mm; 2n=14, 28, 56. Native of Europe, commonly intr. in disturbed sites in our range, w. to the Pacific.

  • Common Names

    hairy chess