Difference between revisions of "Cirsium scariosum var. coloradense"
Sida 21: 215. 2004.
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|common_names=Colorado thistle | |common_names=Colorado thistle | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }} | ||
|basionyms={{Treatment/ID/Basionym | |basionyms={{Treatment/ID/Basionym | ||
|name=Carduus coloradensis | |name=Carduus coloradensis | ||
|authority=Rydberg | |authority=Rydberg | ||
| + | |rank=species | ||
|publication_title=Bull. Torrey Bot. Club | |publication_title=Bull. Torrey Bot. Club | ||
|publication_place=32: 132. 1905 | |publication_place=32: 132. 1905 | ||
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|name=Cirsium coloradense | |name=Cirsium coloradense | ||
|authority=(Rydberg) Cockerell ex Daniels | |authority=(Rydberg) Cockerell ex Daniels | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Cirsium erosum | |name=Cirsium erosum | ||
|authority=(Rydberg) K. Schumann | |authority=(Rydberg) K. Schumann | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Cirsium tioganum var. coloradense | |name=Cirsium tioganum var. coloradense | ||
|authority=(Rydberg) Dorn | |authority=(Rydberg) Dorn | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Cardueae;Cirsium;Cirsium scariosum;Cirsium scariosum var. coloradense | |hierarchy=Asteraceae;Asteraceae tribe Cardueae;Cirsium;Cirsium scariosum;Cirsium scariosum var. coloradense | ||
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|elevation=1900–2500 m | |elevation=1900–2500 m | ||
|distribution=Ariz.;Colo.;N.Mex.;Utah;Wyo. | |distribution=Ariz.;Colo.;N.Mex.;Utah;Wyo. | ||
| − | |discussion=<p>Variety coloradense is common in the mountains of southern and central Colorado with outlying populations in northern New Mexico, northeastern Arizona, central Utah, and southeastern Wyoming. In Colorado it is largely allopatric with the usually acaulescent < | + | |discussion=<p>Variety coloradense is common in the mountains of southern and central Colorado with outlying populations in northern New Mexico, northeastern Arizona, central Utah, and southeastern Wyoming. In Colorado it is largely allopatric with the usually acaulescent <i></i>var.<i> americanum</i>. Some plants from the White Mountains and San Francisco Peaks of Arizona and from Gunnison County, Colorado, approach <i></i>var.<i> thorneae</i> in having deeply divided, extremely spiny distal leaves that overtop the heads. Putative hybrids between <i></i>var.<i> coloradense</i> and <i>Cirsium grahamii</i> have been documented in Apache County, Arizona, and between <i></i>var.<i> coloradense</i> and <i>C. undulatum</i> in Las Animas County, Colorado.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Cirsium scariosum var. coloradense | name=Cirsium scariosum var. coloradense | ||
| − | |||
|authority=(Rydberg) D. J. Keil | |authority=(Rydberg) D. J. Keil | ||
|rank=variety | |rank=variety | ||
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|publication title=Sida | |publication title=Sida | ||
|publication year=2004 | |publication year=2004 | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V19_152.xml |
|tribe=Asteraceae tribe Cardueae | |tribe=Asteraceae tribe Cardueae | ||
|genus=Cirsium | |genus=Cirsium | ||
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}}<!-- | }}<!-- | ||
| − | -->[[Category:Treatment]][[Category:Cirsium scariosum]] | + | --> |
| + | |||
| + | [[Category:Treatment]] | ||
| + | [[Category:Cirsium scariosum]] | ||
| + | [[Category:Revised Since Print]] | ||
Latest revision as of 20:34, 6 November 2020
Plants usually erect, caulescent (rarely acaulescent), 20–150 cm. Stems usually simple, proximally unbranched, very leafy, ± villous with septate trichomes and/or thinly arachnoid tomentose, often glabrate. Leaves: blades oblanceolate or narrowly elliptic, pinnately lobed, longer spines ± stout, usually 1 cm or shorter, abaxial faces glabrous to thinly gray-tomentose, adaxial glabrous; distal narrow, firm, green throughout or unpigmented proximally. Heads 3–10+, ± sessile or pedunculate, usually in spiciform or racemiform arrays, subtended by ± reduced bractlike distal leaves that often do not overtop the heads. Peduncles 0–18 cm. Involucres 2–3 cm. Phyllaries: outer and mid lanceolate to narrowly ovate, spines slender to stout, 1–5 mm; apices of inner acuminate and entire or serrate, or abruptly expanded into scarious, erose-toothed appendages. Corollas white (rarely purple), 22–29 mm, tubes 11–16 mm, throats 4–5 mm, lobes 6–9.5 mm; style tips 4–6 mm. Cypselae 4–6 mm; pappi 18–25 mm. 2n = 34, 36? (as C. foliosum).
Phenology: Flowering summer (Jun–Sep).
Habitat: Wet soil, forests, meadows, roadsides
Elevation: 1900–2500 m
Distribution
Ariz., Colo., N.Mex., Utah, Wyo.
Discussion
Variety coloradense is common in the mountains of southern and central Colorado with outlying populations in northern New Mexico, northeastern Arizona, central Utah, and southeastern Wyoming. In Colorado it is largely allopatric with the usually acaulescent var. americanum. Some plants from the White Mountains and San Francisco Peaks of Arizona and from Gunnison County, Colorado, approach var. thorneae in having deeply divided, extremely spiny distal leaves that overtop the heads. Putative hybrids between var. coloradense and Cirsium grahamii have been documented in Apache County, Arizona, and between var. coloradense and C. undulatum in Las Animas County, Colorado.
Selected References
None.