View source for Cirsium occidentale var. coulteri

{{Treatment/ID
|accepted_name=Cirsium occidentale var. coulteri
|accepted_authority=(Harvey & A. Gray) Jepson
|publications={{Treatment/Publication
|title=Fl. W. Calif.,
|place=509. 1901
|year=1901
}}
|common_names=Coulter’s thistle
|basionyms={{Treatment/ID/Synonym
|name=Cirsium coulteri
|authority=Harvey & A. Gray
}}
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Cardueae;Cirsium;Cirsium occidentale;Cirsium occidentale var. coulteri
|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 occidentale]]</div><div class="higher-taxon"><small>variety</small>[[Cirsium occidentale var. coulteri]]</div></div>
|volume=Volume 19
|mention_page=page 137, 139
|treatment_page=page 138
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>erect or bushy, usually 30–150+ cm, variably tomentose, sometimes ± glabrate. <b>Leaf</b> faces gray-tomentose or adaxial ± glabrate. <b>Heads</b> sometimes in tight clusters at ends of peduncles, usually long-pedunculate, usually elevated well above proximal leaves. <b>Involucres</b> usually about as wide as tall, 4–5 cm diam., densely arachnoid with fine trichomes connecting tips of adjacent phyllaries. <b>Phyllaries</b> subequal, outer ascending to spreading or reflexed, mid apices ascending to stiffly spreading, straight, acicular, usually 1.5–3 × 1–2 mm. <b>Corollas</b> light purple to rich reddish purple, usually 25–33 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring–summer (Mar–Jun).
|habitat=Coastal slopes and ridges, dunes, coastal scrub, grassland, oak woodlands
|elevation=0–700 m
|distribution=Calif.
|discussion=<p>Of conservation concern.</p><!--
--><p>Variety coulteri grows in the coastal zone of central and southern California. The epithet coulteri was for many years misapplied by California botanists. W. L. Jepson ([1923–1925]) used it at the varietal level for a range of plants that included parts of what I am calling vars. venustum and californicum. P. A. Munz (1959) and various other authors recognized Cirsium coulteri as a species, primarily in the context that I recognize as var. venustum. J. T. Howell (1959b) examined the type of C. coulteri and concluded that it and C. occidentale (in the strict sense) are synonymous. I have examined photos of the types of both C. occidentale and C. coulteri and have reached a different conclusion. The type of C. occidentale (BM) has heads with ± imbricate, comparatively short phyllary appendages. The type of C. coulteri (TCD) has long, acicular, subequal phyllaries. D. J. Keil and C. E. Turner (1993) treated the plants with the two head types all as var. occidentale, but I believe it is preferable to recognize separate varieties. Some intermediates are known, but var. coulteri is usually readily separable from var. occidentale.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cirsium occidentale var. coulteri
|author=
|authority=(Harvey & A. Gray) Jepson
|rank=variety
|parent rank=species
|synonyms=
|basionyms=Cirsium coulteri
|family=Asteraceae
|phenology=Flowering spring–summer (Mar–Jun).
|habitat=Coastal slopes and ridges, dunes, coastal scrub, grassland, oak woodlands
|elevation=0–700 m
|distribution=Calif.
|reference=None
|publication title=Fl. W. Calif.,
|publication year=1901
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V19_116.xml
|tribe=Asteraceae tribe Cardueae
|genus=Cirsium
|species=Cirsium occidentale
|variety=Cirsium occidentale var. coulteri
}}<!--

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