Bromus hordeaceus, L.

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

27. B. hordeaceus L. , Sp. Pl. 77 (1753) .

Stems erect, procumbent or ascending. Leaf-sheaths hairy. Panicle erect, usually dense, sometimes reduced to 1 spikelet; pedicels mostly shorter than the spikelets. Glumes usually unequal. Lemmachartaceous, with prominent veins, the margin narrowly hyaline. Palea shorter than lemma. Anthers usually less than 1 mm. Grain shorter than palea. 2« = 28. Almost throughout Europe. All except Sb, but only casual in Fa and Is.

1 Awnsstout,flattened atthe base,divaricate,patentorrecurved in fruit; panicle very dense; spikelets hairy

2 Paniclewithfewspikelets;leaf-sheaths andspikeletsdensely hairy; stems rarely more than 15 cm, stout; lemma 6-5- 8 -5 mm, bluntly angled (c) subsp. ferronii

2 Panicle with many spikelets; leaf-sheaths and spikelets shortly pubescent; stems usually 15-25 cm, sometimes longer; lemma 8-11 mm, rounded at the margin

(b) subsp. molliforaiis 1 Awnstereteatthebase,straightorcurvingslightlyoutwards

in fruit; panicle usually open at first, sometimes contracted

in fruit; spikelets hairy or glabrous

3 Stems 1—8(—12) cm, procumbent or ascending; lemma 6-5-

7-5 mm; awn straight or curving slightly outwards in fruit

(d) subsp. thominii 3 Stems 3-80 cm,usually erect; lemma 8-11 mm; awn straight,

erect (a) subsp. hordeaceus