Bromus vulgaris |
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Columbia brome, Columbian brome, common brome |
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Habit | Plants perennial; not rhizomatous. |
Culms | 60-120 cm, erect or spreading; nodes (3)4-6(7), usually pilose; internodes glabrous. |
Sheaths | pilose or glabrous; auricles absent; ligules 2-6 mm, glabrous, obtuse or truncate, erose or lacerate; blades 13-25(33) cm long, to 14 mm wide, flat, abaxial surfaces usually glabrous, sometimes pilose, adaxial surfaces usually pilose, sometimes glabrous. |
Panicles | 10-15 cm, open; branches ascending to drooping. |
Spikelets | 15-30 mm, elliptic to lanceolate, terete to moderately laterally compressed, with (3)4-9 florets. |
Glumes | glabrous or pilose; lower glumes 5-8 mm, 1(3)-veined; upper glumes 8-12 mm, 3-veined; lemmas 8-15 mm, lanceolate, rounded over the midvein, backs sparsely hairy or glabrous, margins usually coarsely pubescent, sometimes glabrous, apices subulate to acute, entire; awns (4)6-12 mm, straight, arising less than 1.5 mm below the lemma apices; anthers 2-4 mm. |
2n | = 14. |
Bromus vulgaris |
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Distribution |
CA; ID; MT; NV; OR; UT; WA; WY; AB; BC
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Discussion | Bromus vulgaris grows in shaded or partially shaded, often damp, coniferous forests along the coast, and inland in montane pine, spruce, fir, and aspen forests, from sea level to about 2000 m. Its range extends from coastal British Columbia eastward to southwestern Alberta and southward to central California, northern Utah, and western Wyoming. Varieties have been described within Bromus vulgaris; because their variation is overlapping, none are recognized here. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 24, p. 216. |
Parent taxa | Poaceae > subfam. Pooideae > tribe Bromeae > Bromus > sect. Bromopsis |
Sibling taxa | |
Synonyms | B. ciliatus var. glaberrimus |
Name authority | (Hook.) Shear |
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