Bromus porteri |
Bromus pubescens |
|
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nodding brome, Porter brome, Porter's brome |
Canada brome, hairy wood brome, hairy woodland brome |
|
Habit | Plants perennial; not rhizomatous. | Plants perennial; not rhizomatous. |
Culms | 30-100 cm, erect; nodes (2)3-4(5), glabrous or pubescent; internodes mostly glabrous, puberulent near the nodes. |
65-120(150) cm, erect; nodes (3)5-7(9), usually pubescent, sometimes glabrous; internodes pubescent or glabrous. |
Sheaths | glabrous or pilose, midrib of the culm leaves not abruptly narrowed just below the collar; auricles absent; ligules to 2.5 mm, glabrous, truncate or obtuse, erose or lacerate; blades (3)10-25(35) cm long, 2-5(6) mm wide, flat, not glaucous, both surfaces usually glabrous, sometimes the adaxial surface pilose. |
retrorsely pilose, midrib of the culm leaves not abruptly narrowed just below the collar, collars hairy or glabrous; auricles absent; ligules 0.5-2 mm, glabrous, obtuse to truncate, erose; blades 12-32 cm long, 6-15(19) mm wide, flat, 1 or both surfaces glabrous or hairy. |
Panicles | 7-20 cm, open, nodding, often 1-sided; branches slender, ascending to spreading, often recurved and flexuous. |
10-25 cm, open, usually nodding; branches usually spreading, sometimes ascending, often drooping. |
Spikelets | 12-38 mm, elliptic to lanceolate, terete to moderately laterally compressed, with (3)5-11(13) florets. |
(13)15-30 mm, elliptic to lanceolate, terete to moderately laterally compressed, with (4)5-10(13) florets. |
Glumes | usually pubescent, rarely glabrous; lower glumes 5-7(9) mm, usually 3-veined, sometimes 1-veined; upper glumes 6-10 mm, 3-veined, not mucronate; lemmas 8-14 mm, elliptic, rounded over the midvein, usually pubescent or pilose, margins often with longer hairs, backs and margins rarely glabrous, apices acute or obtuse to truncate, entire; awns (1)2-3(3.5) mm, straight, arising less than 1.5 mm below the lemma apices; anthers (1)2-3 mm. |
usually pubescent, rarely glabrous; lower glumes 4-8 mm, 1-veined; upper glumes 5-10 mm, 3(5)-veined, not mucronate; lemmas 8-12 mm, lanceolate, rounded over the midvein, backs and margins usually hairy, sometimes glabrous or scabrous, apices subulate to acute, entire; awns (3)4-7(8) mm, straight, arising less than 1.5 mm below the lemma apices; anthers 2-4(5) mm. |
2n | = 14. |
= 14. |
Bromus porteri |
Bromus pubescens |
|
Distribution |
AZ; CA; CO; ID; MT; ND; NE; NM; NV; SD; TX; UT; WY; MB; SK
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AL; AR; CO; CT; DE; FL; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; NC; ND; NE; NH; NJ; NY; OH; OK; PA; RI; SC; SD; TN; TX; VA; VT; WI; WV; WY; MB; ON; QC
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Discussion | Bromus porteri grows in montane meadows, grassy slopes, mesic steppes, forest edges, and open forest habitats, at 500-3500 m. It is found from British Columbia to Manitoba, and south to California, western Texas, and Mexico. It is closely related to B. anomalus, and has often been included in that species. It differs chiefly in its lack of auricles, and in having culm leaves with midribs that are not narrowed just below the collar. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Bromus pubescens grows in shaded, moist, often upland deciduous woods. Its range is centered in the eastern half of the United States, and extends northward to southern Manitoba, Ontario, and Quebec, westward in scattered locations to Arizona, and southward to eastern Texas and western Florida. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 24, p. 213. | FNA vol. 24, p. 220. |
Parent taxa | Poaceae > subfam. Pooideae > tribe Bromeae > Bromus > sect. Bromopsis | Poaceae > subfam. Pooideae > tribe Bromeae > Bromus > sect. Bromopsis |
Sibling taxa | ||
Synonyms | Bromopsis ported | B. purgans forma laevivaginatus, B. purgans var. laeviglumis, B. purgans forma glabriflorus, B. ciliatus var. laeviglumis, B. ciliatus forma laeviglumis, Bromopsis pubescens |
Name authority | (J.M. Coult.) Nash | Muhl. ex Willd. |
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