Bromus commutatus, Schrader

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1980, Flora Europaea. Volume 5. Alismataceae to Orchidaceae (Monocotyledones), Cambridge: Cambridge University Press : 187

25. B. commutatus Schrader , FI. Germ. 353 (1806).

Stems 40- 120 cm, erect or ascending, glabrous. Lower leaf-sheaths softly hairy, the upper usually glabrous or nearly so. Panicle-branches and pedicels slender, mostly longer than the spikelets; spikelets oblong-lanceolate, soon disarticulating. Lower glume 5-7 mm, the upper 6-9 mm. Lemma 8-11 -5 mm, obovate-oblanceolate, bluntly angled on the margins, acute, with overlapping margins; awn 3-10 mm. Palea shorter than lemma. Grain thin, flat, slightly shorter than the palea. 2« = 28. Most of Europe except Fennoscandia and the N. & E. parts of the U.S.S.R. Al Au Be Br Bu Co Cz Ga Ge Gr Hb He Ho Hs Hu It Ju Po Rm Rs (*B, C, W, K) Si [Da Su].