Difference between revisions of "Lolium rigidum"

Gaudin
Common names: Stiff ryegrass
Synonyms: Lolium strictum unknown
Treatment appears in FNA Volume 24. Treatment on page 456.
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|distribution=Tex.;Man.;Calif.;La.;Oreg.;Miss.;Ariz.;Mo.
 
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|discussion=<p>Lolium rigidum is native to Europe, North Africa, and western Asia. It has been found as a weed of roadsides and waste places at scattered locations in the contiguous United States and Canada.</p><!--
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|discussion=<p><i>Lolium rigidum</i> is native to Europe, North Africa, and western Asia. It has been found as a weed of roadsides and waste places at scattered locations in the contiguous United States and Canada.</p><!--
--><p>Lolium rigidum intergrades with L. perenne, L. multiflorum, and, occasionally, L. temulentum. Hybrids with L. multiflorum are called Lolium xhubbardii Jansen & Wacht. ex B.K. Simon.</p>
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--><p><i>Lolium rigidum</i> intergrades with <i>L. perenne</i>, <i>L. multiflorum</i>, and, occasionally, <i>L. temulentum</i>. Hybrids with <i>L. multiflorum</i> are called <i>Lolium</i> xhubbardii Jansen & Wacht. ex B.K. Simon.</p>
 
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V24/V24_655.xml
 
|subfamily=Poaceae subfam. Pooideae
 
|subfamily=Poaceae subfam. Pooideae
 
|tribe=Poaceae tribe Poeae
 
|tribe=Poaceae tribe Poeae

Revision as of 17:21, 18 September 2019

Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Plants annual. Culms to 70 cm. Blades to 17 cm long, 0.5-5(8) mm wide. Spikes 3-30 cm, with 2-20 spikelets; rachises 0.5-3.5 mm thick at the nodes, with the spikelets somewhat sunken in the rachises and partly concealed by the glumes. Spikelets 5-18 mm long, 1-3(7) mm wide, with 2-8(11) florets. Glumes 4-20(30) mm, usually from 3/4 as long as to slightly exceeding the distal florets, rather indurate; lemmas 3-8.5(10.5) mm long, 0.9-2 mm wide; paleas slightly shorter than to slightly longer than the lemmas, usually unawned, sometimes awned, awns to 10 mm; anthers 1.2-3.2 mm. Caryopses 2.7-5.5 mm long, 1-1.5 mm wide, 3 or more times longer than wide. 2n = 14.

Distribution

Tex., Man., Calif., La., Oreg., Miss., Ariz., Mo.

Discussion

Lolium rigidum is native to Europe, North Africa, and western Asia. It has been found as a weed of roadsides and waste places at scattered locations in the contiguous United States and Canada.

Lolium rigidum intergrades with L. perenne, L. multiflorum, and, occasionally, L. temulentum. Hybrids with L. multiflorum are called Lolium xhubbardii Jansen & Wacht. ex B.K. Simon.

Selected References

None.

Lower Taxa

None.