View source for Cirsium clavatum var. clavatum

{{Treatment/ID
|accepted_name=Cirsium clavatum var. clavatum
|accepted_authority=unknown
|publications=
|common_names=Fish Lake thistle
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Cirsium clavatum var. markaguntense
|authority=unknown
}}
|hierarchy=Asteraceae;Asteraceae tribe Cardueae;Cirsium;Cirsium clavatum;Cirsium clavatum var. clavatum
|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 clavatum]]</div><div class="higher-taxon"><small>variety</small>[[Cirsium clavatum var. clavatum]]</div></div>
|volume=Volume 19
|mention_page=page 128
|treatment_page=page 127
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Abaxial </b>leaf faces glabrous to ± tomentose. <b>Involucres</b> ovoid to campanulate, 1.5–2 × 1–2 cm, glabrous or thinly arachnoid-tomentose with fine, non-septate trichomes. <b>Phyllaries</b> in 5–6 series, strongly imbricate, green or with dark subapical patch, lanceolate to ovate, abaxial faces with narrow glutinous ridge; outer and middle bases appressed, apical appendages erect or ascending, linear-lanceolate, entire, usually not scarious or fringed, acicular-acuminate, spines erect or ascending, 3–6 mm; apices of inner sometimes flexuous or reflexed, narrow, flat, and entire or minutely toothed to slightly expanded and erose.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer (Jun–Sep).
|habitat=Sagebrush scrub, aspen groves, meadows, openings in montane coniferous forests
|elevation=2100–3400 m
|distribution=Colo. ;Utah.
|discussion=<p><i>Cirsium clavatum</i> grows from the Colorado Plateau of central Utah eastward into the Rocky Mountains of western Colorado. R. J. Moore and C. Frankton (1965) suggested that <i>C. clavatum</i> (i.e., <i></i></i>var.<i><i> clavatum</i> here) is a derivative of hybridization between <i>C. eatonii</i> and C. centaureae (i.e., <i>C. clavatum </i>var.<i> americanum</i> here). S. L. Welsh (1983) noted that the distribution of <i></i></i>var.<i><i> clavatum</i> is distinct from those of <i></i></i>var.<i><i> americanum</i> and <i>C. eatonii</i>. It is certainly possible that ancient hybridization may have contributed to the origin of <i></i></i>var.<i><i> clavatum</i>, but there is no indication that the modern plants over most of its range are hybrids. The morphology of certain plants from southeastern Utah indicates a possibility of hybridization between <i>C. clavatum</i> and <i>C. eatonii </i>var.<i> eatonii</i>. The close relationship between <i></i></i>var.<i><i> clavatum</i> and <i></i></i>var.<i><i> americanum</i> is evident in the many overlapping vegetative features. The recently described <i>C. clavatum</i> var. markaguntense S. L. Welsh is a minor variant with subentire glabrous leaves.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cirsium clavatum var. clavatum
|author=
|authority=unknown
|rank=variety
|parent rank=species
|synonyms=Cirsium clavatum var. markaguntense
|basionyms=
|family=Asteraceae
|phenology=Flowering summer (Jun–Sep).
|habitat=Sagebrush scrub, aspen groves, meadows, openings in montane coniferous forests
|elevation=2100–3400 m
|distribution=Colo. ;Utah.
|reference=None
|publication title=
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V19_91.xml
|tribe=Asteraceae tribe Cardueae
|genus=Cirsium
|species=Cirsium clavatum
|variety=Cirsium clavatum var. clavatum
}}<!--

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