Bromus riparius, Rehmann

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 : 186

18. B. riparius Rehmann , Notizbl. Veg. Gest. Schwarz. Meer 83 (1872)

(ss. fibrosus Hackel , B. erectus auct. ross., non Hudson).

Densely caespitose, sometimes with very short rhizomes; stems 30-90 cm, slender, erect or decumbent at the base. Leaves 10-20 cmx 2-3 mm, flaccid, scabrid, the margins sometimes with brittle cilia; sheaths with long, patent or retrorse hairs, the basal decaying into persistent, reticulate fibres. Panicle 10-20x 3-7 cm, erect, rather lax, the branches scabrid, each with 1-2 spikelets; spikelets 20-30 mm, lanceolate, usually pale green, with 5-7 florets. Lower glume 8-10 mm, the upper 9-12 mm. Lemma 11-13 mm, oblong-lanceolate, usually glabrous, sometimes appressed-hairy; awn 5-8 mm, straight or slightly curved. Palea shorter than lemma. Anthers 2-5-3 -5 mm. 2« = 70. Meadows, scrub and rocky hillsides. S.E. Europe, extending northwards to C. Russia. Bu Gr Ju Rm Rs (C, W, K, E).

Robust variants with hairy inflorescences from Romania and Bulgaria have been distinguished as B. barcensis Simonkai , Enum. Fl. Transs. 584 (1887) ( B. fibrosus subsp. barcensis (Simonkai) Hayek ), but the status of this taxon is very doubtful.