Difference between revisions of "Hordeum arizonicum"
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|distribution=Calif.;Ariz.;N.Mex. | |distribution=Calif.;Ariz.;N.Mex. | ||
| − | |discussion=<p>Hordeum arizonicum grows in saline habitats, along irrigation ditches, canals, and ponds in the south¬western United States and northern Mexico. It is a segmental allopolyploid between H. jubatum and either H. pusillum or H. intercedens.</p> | + | |discussion=<p><i>Hordeum arizonicum</i> grows in saline habitats, along irrigation ditches, canals, and ponds in the south¬western United States and northern Mexico. It is a segmental allopolyploid between <i>H. jubatum</i> and either <i>H. pusillum</i> or <i>H. intercedens</i>.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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name=Hordeum arizonicum | name=Hordeum arizonicum | ||
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|authority=Covas | |authority=Covas | ||
|rank=species | |rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Poaceae | |family=Poaceae | ||
| + | |illustrator=Cindy Roché;Annaliese Miller | ||
| + | |illustration copyright=Utah State University | ||
|distribution=Calif.;Ariz.;N.Mex. | |distribution=Calif.;Ariz.;N.Mex. | ||
|reference=None | |reference=None | ||
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|publication year= | |publication year= | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/200273ad09963decb8fc72550212de541d86569d/coarse_grained_fna_xml/V24/V24_351.xml |
|subfamily=Poaceae subfam. Pooideae | |subfamily=Poaceae subfam. Pooideae | ||
|tribe=Poaceae tribe Triticeae | |tribe=Poaceae tribe Triticeae | ||
Latest revision as of 16:23, 11 May 2021
Plants annual to biennial, perennial under favorable conditions; forming small tufts. Culms 21-75 cm, rarely geniculate, not bulbous; nodes glabrous. Lower sheaths pub¬escent; upper sheaths glabrous; ligules 0.6-1.8 mm; auricles absent; blades to 13 cm long, to 4 mm wide, flat, glaucous, both surfaces scabrous, hairy, sometimes only sparsely hairy. Spikes 5-12 cm long, 6-10 mm wide, erect, often partially enclosed at maturity, pale green. Glumes bent, strongly divergent at maturity. Central spikelets: glumes 11-28 mm long, 0.2-0.4 mm wide, flattened near the base, setaceous above the middle; lemmas 5-9 mm, glabrous, awned, awns 10-22 mm; anthers 1-2.2 mm. Lateral spikelets sterile; glumes to 27 mm long, 0.2-0.4 mm wide, flattened near the base; lemmas 2.5-5 mm, unawned or awned, awns to 3 mm, lemma and awn together to 7 mm, the transition from the lemma to the awn gradual. 2n = 42.
Distribution
Calif., Ariz., N.Mex.
Discussion
Hordeum arizonicum grows in saline habitats, along irrigation ditches, canals, and ponds in the south¬western United States and northern Mexico. It is a segmental allopolyploid between H. jubatum and either H. pusillum or H. intercedens.
Selected References
None.