Difference between revisions of "Bromus inermis"
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|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Bromeae;Bromus;Bromus sect. Bromopsis;Bromus inermis | |hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Bromeae;Bromus;Bromus sect. Bromopsis;Bromus inermis | ||
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Poaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Poaceae subfam. Pooideae]]</div><div class="higher-taxon"><small>tribe</small>[[Poaceae tribe Bromeae]]</div><div class="higher-taxon"><small>genus</small>[[Bromus]]</div><div class="higher-taxon"><small>section</small>[[Bromus sect. Bromopsis]]</div><div class="higher-taxon"><small>species</small>[[Bromus inermis]]</div></div> | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Poaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Poaceae subfam. Pooideae]]</div><div class="higher-taxon"><small>tribe</small>[[Poaceae tribe Bromeae]]</div><div class="higher-taxon"><small>genus</small>[[Bromus]]</div><div class="higher-taxon"><small>section</small>[[Bromus sect. Bromopsis]]</div><div class="higher-taxon"><small>species</small>[[Bromus inermis]]</div></div> | ||
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| − | --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial; rhizomatous, rhizomes short to long-creeping. <b>Culms</b> 50-130 cm, erect, single or a few together; nodes (2)3-5(6), usually glabrous, rarely pubescent; internodes usually glabrous, rarely pubescent. <b>Sheaths</b> usually | + | --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial; rhizomatous, rhizomes short to long-creeping. <b>Culms</b> 50-130 cm, erect, single or a few together; nodes (2)3-5(6), usually glabrous, rarely pubescent; internodes usually glabrous, rarely pubescent. <b>Sheaths</b> usually glabrous, rarely pubescent or pilose; auricles sometimes present; ligules to 3 mm, glabrous, truncate, erose; blades 11-35(42) cm long, 5-15 mm wide, flat, usually glabrous, rarely pubescent or pilose. <b>Panicles</b> 10-20 cm, open, erect; branches ascending or spreading. <b>Spikelets</b> 20-40 mm, elliptic to lanceolate, terete to moderately laterally compressed, sometimes purplish, with (5)8-10 florets. <b>Glumes</b> glabrous; lower glumes (4)6-8(9) mm, 1(3)-veined; upper glumes (5)7-10 mm, 3-veined; lemmas 9-13 mm, elliptic to lanceolate, rounded over the midvein, usually glabrous and smooth, sometimes scabrous, margins sometimes sparsely puberulent, the basal part of the backs less frequently so, apices acute to obtuse, entire; awns absent or to 3 mm, straight, arising less than 1.5 mm below the lemma apices; anthers 3.5-6 mm. <b>2n</b> = 28, 56.</span><!-- |
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Latest revision as of 14:02, 14 December 2022
Plants perennial; rhizomatous, rhizomes short to long-creeping. Culms 50-130 cm, erect, single or a few together; nodes (2)3-5(6), usually glabrous, rarely pubescent; internodes usually glabrous, rarely pubescent. Sheaths usually glabrous, rarely pubescent or pilose; auricles sometimes present; ligules to 3 mm, glabrous, truncate, erose; blades 11-35(42) cm long, 5-15 mm wide, flat, usually glabrous, rarely pubescent or pilose. Panicles 10-20 cm, open, erect; branches ascending or spreading. Spikelets 20-40 mm, elliptic to lanceolate, terete to moderately laterally compressed, sometimes purplish, with (5)8-10 florets. Glumes glabrous; lower glumes (4)6-8(9) mm, 1(3)-veined; upper glumes (5)7-10 mm, 3-veined; lemmas 9-13 mm, elliptic to lanceolate, rounded over the midvein, usually glabrous and smooth, sometimes scabrous, margins sometimes sparsely puberulent, the basal part of the backs less frequently so, apices acute to obtuse, entire; awns absent or to 3 mm, straight, arising less than 1.5 mm below the lemma apices; anthers 3.5-6 mm. 2n = 28, 56.
Distribution
Pa., Conn., N.J., N.Y., Wash., Va., Del., D.C., Wis., W.Va., Kans., Minn., N.Dak., Nebr., Okla., S.Dak., Mass., Maine, N.H., R.I., Vt., Wyo., N.Mex., Tex., La., Ariz., Idaho, Mich., N.C., Tenn., Calif., Nev., Ark., Colo., Ga., Iowa, Ill., Ind., Ky., Md., Mo., Miss., Mont., Ohio, Oreg., Utah, Alaska, Alta., B.C., Greenland, Man., N.B., Nfld. and Labr., N.S., N.W.T., Nunavut, Ont., P.E.I., Que., Sask., Yukon, S.C.
Discussion
Bromus inermis is native to Eurasia, and is now found in disturbed sites in Alaska, Greenland, and most of Canada as well as south throughout most of the contiguous United States except the southeast. It has also been used for rehabilitation, and is planted extensively for forage in pastures and rangelands from Alaska and the Yukon Territory toTexas.
Bromus inermis is similar to B. pumpellianus, differing mainly in having glabrous lemmas, nodes, and leaf blades, but lack of pubescence is not a consistently reliable distinguishing character. Bromus inermis also resembles a recently introduced species, B. riparius, from which it differs primarily in its shorter or nonexistent awns.
Selected References
None.