Difference between revisions of "Brachypodium pinnatum"
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| − | --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial; rhizomatous, sometimes subcespitose, rhizomes scaly, sparingly branched. <b>Culms</b> 30-120 cm, erect, stiff, usually unbranched, with 2-3 nodes, not narrowed below the racemes, internodes smooth, usually glabrous; nodes pubescent, often scabrous. <b>Sheaths</b> rounded, smooth, glabrous or hairy, bases sometimes shortly pubescent; ligules 0.8-2.5 mm, truncate; blades 6-45 cm long, 2-7(10) mm wide, flat, lax, dark green, abaxial surfaces scabrous, not shiny, adaxial surfaces sparsely hairy, primary veins conspicuous, separated by finer secondary veins. <b>Racemes</b> 4-25 cm, erect, sometimes nodding, with (3)6-15 spikelets; pedicels 1-2 mm. <b>Spikelets</b> 15-50 mm, terete, with (3)7-24 florets. <b>Glumes</b> lanceolate to narrowly ovate, acute, firm, glabrous; lower glumes 3-6 mm, 3-6-veined; upper glumes 3-8 mm, 5-9-veined; lemmas 6-11 mm, | + | --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial; rhizomatous, sometimes subcespitose, rhizomes scaly, sparingly branched. <b>Culms</b> 30-120 cm, erect, stiff, usually unbranched, with 2-3 nodes, not narrowed below the racemes, internodes smooth, usually glabrous; nodes pubescent, often scabrous. <b>Sheaths</b> rounded, smooth, glabrous or hairy, bases sometimes shortly pubescent; ligules 0.8-2.5 mm, truncate; blades 6-45 cm long, 2-7(10) mm wide, flat, lax, dark green, abaxial surfaces scabrous, not shiny, adaxial surfaces sparsely hairy, primary veins conspicuous, separated by finer secondary veins. <b>Racemes</b> 4-25 cm, erect, sometimes nodding, with (3)6-15 spikelets; pedicels 1-2 mm. <b>Spikelets</b> 15-50 mm, terete, with (3)7-24 florets. <b>Glumes</b> lanceolate to narrowly ovate, acute, firm, glabrous; lower glumes 3-6 mm, 3-6-veined; upper glumes 3-8 mm, 5-9-veined; lemmas 6-11 mm, oblong to lanceolate, usually hairy, 7-veined, awned, awns 1-7 mm, straight; paleas (5)7-9(10) mm, narrowly oblong, 2-keeled, keels ciliate; anthers 3.5-5.5 mm. <b>Caryopses</b> 6-7.2 mm. <b>2n</b> = 14, 16, 28.</span><!-- |
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|special status=Introduced | |special status=Introduced | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/200273ad09963decb8fc72550212de541d86569d/coarse_grained_fna_xml/V24/V24_261.xml |
|subfamily=Poaceae subfam. Pooideae | |subfamily=Poaceae subfam. Pooideae | ||
|tribe=Poaceae tribe Brachypodieae | |tribe=Poaceae tribe Brachypodieae | ||
Latest revision as of 16:22, 11 May 2021
Plants perennial; rhizomatous, sometimes subcespitose, rhizomes scaly, sparingly branched. Culms 30-120 cm, erect, stiff, usually unbranched, with 2-3 nodes, not narrowed below the racemes, internodes smooth, usually glabrous; nodes pubescent, often scabrous. Sheaths rounded, smooth, glabrous or hairy, bases sometimes shortly pubescent; ligules 0.8-2.5 mm, truncate; blades 6-45 cm long, 2-7(10) mm wide, flat, lax, dark green, abaxial surfaces scabrous, not shiny, adaxial surfaces sparsely hairy, primary veins conspicuous, separated by finer secondary veins. Racemes 4-25 cm, erect, sometimes nodding, with (3)6-15 spikelets; pedicels 1-2 mm. Spikelets 15-50 mm, terete, with (3)7-24 florets. Glumes lanceolate to narrowly ovate, acute, firm, glabrous; lower glumes 3-6 mm, 3-6-veined; upper glumes 3-8 mm, 5-9-veined; lemmas 6-11 mm, oblong to lanceolate, usually hairy, 7-veined, awned, awns 1-7 mm, straight; paleas (5)7-9(10) mm, narrowly oblong, 2-keeled, keels ciliate; anthers 3.5-5.5 mm. Caryopses 6-7.2 mm. 2n = 14, 16, 28.
Distribution
Calif., Mass., Oreg.
Discussion
Brachypodium pinnatum is native to Eurasia. It is reportedly established in Sonoma County, California, and in Massachusetts. In its native range it prefers open woodlands, forest edges, and grassland habitats, and is fairly tolerant of hot, dry conditions.
Selected References
None.