Cirsium eatonii

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Cirsium eatonii
Cirsium eatonii var clokeyi 3.jpg
Cirsium eatonii var. clokeyi
in Southern Nevada
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Cynareae
Genus: Cirsium
Species: C. eatonii
Binomial name
Cirsium eatonii
(A.Gray) B.L.Rob.

Cirsium eatonii, commonly known as Eaton's thistle or mountaintop thistle, is a North American species of flowering plants in the aster family.[2][3]

The species has been found in Idaho, Montana, New Mexico, Wyoming, Nevada, Utah and Colorado.[4]


Cirsium eatonii is an erect herb up to 150 cm (60 inches or 5 feet) tall. Leaves are generally hairless but the entire foliage is covered with many long, white spines. One plant produces several flower heads with pink to purple flowers. The species grows in grasslands, sagebrush steppes, open savannahs, etc.[3]


A number of varieties have been identified, which include:


  1. ^ a b The Plant List, Cirsium eatonii (A.Gray) B.L.Rob.
  2. ^ "Taxon: Cirsium eatonii (A. Gray) B. L. Rob.". Germplasm Resources Information Network (GRIN). United States Department of Agriculture, Agricultural Research Service, Beltsville Area. Retrieved 11 March 2012. 
  3. ^ a b c "Cirsium eatonii". Flora of North America. Retrieved 11 March 2012. 
  4. ^ "Cirsium eatonii (A. Gray) B.L. Rob.". USDA PLANTS database. Retrieved 11 March 2012. 

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