Difference between revisions of "Cirsium eatonii var. hesperium"
Sida 21: 212. 2004.
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|common_names=Tall mountain thistle | |common_names=Tall mountain thistle | ||
| − | |basionyms={{Treatment/ID/ | + | |special_status={{Treatment/ID/Special_status |
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }} | ||
| + | |basionyms={{Treatment/ID/Basionym | ||
|name=Cnicus hesperius | |name=Cnicus hesperius | ||
|authority=Eastwood | |authority=Eastwood | ||
| + | |rank=species | ||
| + | |publication_title=Bull. Calif. Acad. Sci., ser. | ||
| + | |publication_place=3, 1: 122. 1898 | ||
}} | }} | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Cirsium hesperium | |name=Cirsium hesperium | ||
|authority=(Eastwood) Petrak | |authority=(Eastwood) Petrak | ||
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Cardueae;Cirsium;Cirsium eatonii;Cirsium eatonii var. hesperium | |hierarchy=Asteraceae;Asteraceae tribe Cardueae;Cirsium;Cirsium eatonii;Cirsium eatonii var. hesperium | ||
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name=Cirsium eatonii var. hesperium | name=Cirsium eatonii var. hesperium | ||
| − | |||
|authority=(Eastwood) D. J. Keil | |authority=(Eastwood) 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_145.xml |
|tribe=Asteraceae tribe Cardueae | |tribe=Asteraceae tribe Cardueae | ||
|genus=Cirsium | |genus=Cirsium | ||
Latest revision as of 20:48, 5 November 2020
Stems strictly erect, 50–150 cm. Leaf faces glabrous or nearly so or abaxially finely arachnoid-tomentose and/or villous to tomentose with septate trichomes on one or both faces. Heads usually sessile in stiffly erect, tight spiciform arrays, sometimes also sessile in distal leaf axils. Involucres 2–2.5 cm, tomentose with septate trichomes; outer phyllaries with a few stiff lateral spines; spines of phyllaries slender. Corollas pink or pale to deep purple, 14–21 mm, tubes 4.5–10 mm, throats 3.5–5 mm, lobes 3.5–7 mm. Pappi 8–17 mm.
Phenology: Flowering summer (Jul–Sep).
Habitat: Rocky slopes, subalpine meadows, forest openings
Elevation: 2700–3400 m
Discussion
Variety hesperium is distributed in the San Juan Mountains and Spanish Peaks area of southern Colorado. It differs from var. eriocephalum in its stiffly erect arrays. Plants from the Spanish Peaks area approach var. eriocephalum.
Selected References
None.