Bromus racemosus |
Bromus secalinus |
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bald brome, brome a grappes, smooth brome |
brome des seigles, common chess, rye brome |
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Habit | Plants annual. | Plants annual. |
Culms | 20-110 cm, erect or ascending. |
20-80 (120) cm, erect. |
Panicles | 4-16 cm long, 2-3 cm wide, erect, open; branches sometimes longer than the spikelets, slender, usually ascending, slightly curved or straight. |
5-23 cm long, 2.5-12 cm wide, open, nodding; branches spreading to ascending; lower branches slightly drooping, often secund after anthesis, not sinuous. |
Spikelets | 12-20 mm, lanceolate, terete to moderately laterally compressed; florets 5-6, bases concealed at maturity; rachilla internodes 1-1.5 mm, concealed at maturity. |
10-20 mm, shorter than at least some panicle branches, ovoid-lanceolate or ovate, laterally compressed, not purple-tinged; florets 4-9(10), ascending-spreading after flowering, bases visible at maturity; rachilla internodes visible at maturity. |
Glumes | smooth to scabrous; lower glumes 4-6 mm, (3)5-veined; upper glumes 4-7 mm, 7-veined; lemmas 6.5-8 mm long, 3-4.5 mm wide, elliptic to lanceolate, coriaceous, backs smooth, distinctly 7(9)-veined, not ribbed, rounded over the midvein, margins scabrous, rounded, not inrolled at maturity, apices acute to obtuse, bifid, teeth shorter than 1 mm; awns 5-9 mm, all more or less equal in length, straight, arising less than 1.5 mm below the lemma apices; anthers 1.5-3 mm. |
scabrous or glabrous; lower glumes 4-6 mm, 3-5-veined; upper glumes 6-7 mm, 7-veined; lemmas 6.5-8.5(10) mm long, 1.7-2.5 mm wide, elliptic, coriaceous, obscurely 7-veined, rounded over the midvein, backs usually glabrous, sometimes pubescent, scabrous to puberulent on the margins and near the apices, margins evenly rounded, inrolled at maturity, apices acute to obtuse, bifid, teeth shorter than 1 mm; awns (0)3-6(9.5) mm, straight or flexuous, arising less than 1.5 mm below the lemma apices; anthers 1-2 mm. |
Caryopses | shorter than the paleas, thin, weakly inrolled or flat. |
equaling the paleas, thick, strongly inrolled at maturity. |
Lower | sheaths densely hairy, hairs stiff, often retrorse; upper sheaths glabrous or pubescent; ligules 1-2 mm, glabrous or hairy, erose; blades 7-18 cm long, 1-4 mm wide, pilose on both surfaces. |
sheaths glabrous or loosely pubescent and glabrate; ligules 2-3 mm, glabrous, obtuse; blades 15-30 cm long, 2-4 mm wide, abaxial surfaces pilose or glabrous, adaxial surfaces pilose. |
2n | = 28. |
= 28. |
Bromus racemosus |
Bromus secalinus |
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Distribution |
AK; AL; AR; AZ; CA; CO; CT; DC; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MO; MS; MT; NC; ND; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; TN; TX; UT; VA; VT; WA; WI; WV; WY; AB; BC; LB; NB; NS; NT; ON; PE; QC; SK
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AK; AL; AR; AZ; CA; CO; CT; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; HI; AB; BC; NB; NS; ON; QC; YT
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Discussion | Bromus racemosus grows in fields, waste places, and road verges. It is native to western Europe and the Baltic region, and occurs throughout much of southern Canada and the United States. Hitchcock (1951) included B. hordeaceus subsp. pseudothominei in B. racemosus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Bromus secalinus is native to Europe. It is widespread in the Flora region, where it grows in fields, on waste ground, and along roadsides. Specimens with pubescent spikelets may be called B. secalinus var. velutinus (Schrad.) W.D.J. Koch. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 24, p. 233. | FNA vol. 24, p. 230. |
Parent taxa | Poaceae > subfam. Pooideae > tribe Bromeae > Bromus > sect. Bromus | Poaceae > subfam. Pooideae > tribe Bromeae > Bromus > sect. Bromus |
Sibling taxa | ||
Synonyms | B. secalinus var. velutinus, B. grossus | |
Name authority | L. | L. |
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