View source for Cirsium arizonicum var. arizonicum

{{Treatment/ID
|accepted_name=Cirsium arizonicum var. arizonicum
|accepted_authority=
|publications=
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Cirsium arizonicum var. nidulum
|authority=
|rank=variety
}} {{Treatment/ID/Synonym
|name=Cirsium nidulum
|authority=
|rank=species
}}
|hierarchy=Asteraceae;Asteraceae tribe Cardueae;Cirsium;Cirsium arizonicum;Cirsium arizonicum var. arizonicum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Cardueae]]</div><div class="higher-taxon"><small>genus</small>[[Cirsium]]</div><div class="higher-taxon"><small>species</small>[[Cirsium arizonicum]]</div><div class="higher-taxon"><small>variety</small>[[Cirsium arizonicum var. arizonicum]]</div></div>
|volume=Volume 19
|mention_page=page 142, 144, 145
|treatment_page=page 143
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>glabrous to tomentose, usually without septate trichomes. <b>Leaf</b> blades unlobed to deeply divided, faces usually ± tomentose, at least abaxially, usually without septate trichomes; main marginal spines 2–15 mm, often stout; cauline bases narrowed, truncate or clasping, but not or only slightly decurrent. <b>Involucres</b> cylindric to campanulate. <b>Phyllary</b> spines 1–20 mm, slender to very stout. <b>Corollas</b> usually bright red or pink, 24–34 mm, tubes 7–12, throats 2–5 mm, lobes 13–18 mm; style tips–2.5 mm. <b>2n</b> = 30, 32, 34 (as <i>C. arizonicum</i> × C. nidulum).</span><!--

-->{{Treatment/Body
|phenology=Flowering spring–fall (May–Oct).
|habitat=Pine-oak-juniper woodlands, montane coniferous forests, subalpine
|elevation=1200–3600 m
|distribution=Ariz.;Calif.;Nev.;N.Mex.;Utah.
|discussion=<p>Variety arizonicum is widely distributed across the uplands of the American Southwest from eastern California across the Basin and Range Province to the Colorado Plateau and the mountains of Arizona and New Mexico. It is the most widely distributed and most variable variety of <i>Cirsium arizonicum</i>. Viciously spiny plants with deeply divided leaves from the northern part of the range of <i></i>var.<i> arizonicum</i> often have been treated as C. nidulum. These plants form a continuum with the less spiny plants of more southerly distribution, however, and separation of two varieties (or species) is arbitrary.</p><!--
--><p>Leaves of some plants of <i></i>var.<i> arizonicum</i> from Coconino County, Arizona, resemble those of the sympatric <i>C. wheeleri</i>. I have not seen hybrids between these taxa, but it is likely that some genetic interchange between the two has taken place in the past.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cirsium arizonicum var. arizonicum
|authority=
|rank=variety
|parent rank=species
|synonyms=Cirsium arizonicum var. nidulum;Cirsium nidulum
|basionyms=
|family=Asteraceae
|phenology=Flowering spring–fall (May–Oct).
|habitat=Pine-oak-juniper woodlands, montane coniferous forests, subalpine
|elevation=1200–3600 m
|distribution=Ariz.;Calif.;Nev.;N.Mex.;Utah.
|reference=None
|publication title=
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V19-20-21/V19_125.xml
|tribe=Asteraceae tribe Cardueae
|genus=Cirsium
|species=Cirsium arizonicum
|variety=Cirsium arizonicum var. arizonicum
}}<!--

-->[[Category:Treatment]][[Category:Cirsium arizonicum]]