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Cirsium eatonii, commonly known as Eaton's thistle or mountaintop thistle, is a North American species of flowering plants in the family Asteraceae.[2][3]
The species has been found in Idaho, Montana, New Mexico, Wyoming, Nevada, Utah and Colorado.[4]
Description
Cirsium eatonii is highly variable. It is an erect herb up to 150 cm (60 inches or 5 feet) tall in some populations. The entire foliage is more or less spiny. One plant produces several flower heads with pink to purple or yellow flowers. The species grows at high elevations in grasslands, sagebrush steppes, open savannahs, etc.[3]
A number of varieties have been identified, which include:
- Cirsium eatonii var. clokeyi - Clokey thistle, Spring Mountains thistle, white-spine thistle. This variety is rare and uncommon. - Nevada[5]
- Cirsium eatonii var. eatonii - Nevada, Utah
- Cirsium eatonii var. eriocephalum - alpine thistle, mountain thistle - Colorado, New Mexico, Utah
- Cirsium eatonii var. hesperium - tall mountain thistle - Colorado
- Cirsium eatonii var. murdockii - northern mountain thistle - Colorado, Idaho, Montana, Nevada, Utah, Wyoming
- Cirsium eatonii var. peckii - ghost thistle, Steens Mountain thistle - Nevada, Oregon
- Cirsium eatonii var. viperinum - Snake Range thistle - Nevada
References
- ^ a b The Plant List, Cirsium eatonii (A.Gray) B.L.Rob.
- ^ "Cirsium eatonii". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 11 March 2012.
- ^ a b c "Cirsium eatonii". Flora of North America. efloras.org. Retrieved 11 March 2012.
- ^ "Cirsium eatonii (A. Gray) B.L. Rob". USDA PLANTS database. Retrieved 11 March 2012.
- ^ "NatureServe Explorer". NatureServe Explorer Cirsium eatonii var. clokeyi. NatureServe. 2022. Retrieved 22 May 2022.
External links
Media related to Cirsium eatonii at Wikimedia Commons
Data related to Cirsium eatonii at Wikispecies- "Cirsium eatoni". Plants for a Future.
- "Cirsium scopulorum". Plants for a Future.
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