Cirsium eatonii

{{Short description|Species of thistle}}

{{Speciesbox

|image = Cirsium eatonii var clokeyi 3.jpg

|image_caption = Cirsium eatonii var. clokeyi
in Southern Nevada

|status = {{TNCStatus}}

|status_system = TNC

|genus = Cirsium

|species = eatonii

|authority = (A.Gray) B.L.Rob.

|synonyms_ref = [http://www.theplantlist.org/tpl1.1/record/gcc-44914 The Plant List, Cirsium eatonii (A.Gray) B.L.Rob. ]

|synonyms = {{collapsible list|bullets = true

|title=Synonymy

|Carduus leiocarpus A.Heller

|Carduus leiocephalus (D.C.Eaton) A.Heller

|Cirsium eatonii var. harrisonii S.L.Welsh

|Cirsium eriocephalum var. leiocephalum D.C.Eaton

|Cnicus eatonii A.Gray

|Carduus hookerianus var. eriocephalus (A.Gray) A.Nelson, syn of var. eriocephalum

|Carduus scopulorum Greene, syn of var. eriocephalum

|Cirsium eriocephalum A.Gray 1864 not Wallr. 1840, syn of var. eriocephalum

|Cirsium hookerianum var. eriocephalum (A.Gray) A.Nelson, syn of var. eriocephalum

|Cirsium scopulorum (Greene) Cockerell, syn of var. eriocephalum

|Cirsium scopulorum (Greene) Cockerell ex Daniels, syn of var. eriocephalum

|Cnicus eriocephalus A.Gray, syn of var. eriocephalum

|Carduus hesperius A.Heller, syn of var. hesperium

|Carduus hookerianus var. hesperius (Eastw.) A.Nelson, syn of var. hesperium

|Cirsium hesperium (Eastw.) Petr., syn of var. hesperium

|Cnicus hesperius Eastw., syn of var. hesperium

|Carduus polyphyllus Rydb., syn of var. murdockii

|Carduus tweedyi Rydb., syn of var. murdockii

|Cirsium murdockii (S.L.Welsh) Cronquist, syn of var. murdockii

|Cirsium polyphyllum (Rydb.) Petr., syn of var. murdockii

|Cirsium tweedyi (Rydb.) Petr., syn of var. murdockii

|Cirsium peckii L.F.Hend., syn of var. peckii

|}}}}

Cirsium eatonii, commonly known as Eaton's thistle or mountaintop thistle, is a North American species of flowering plants in the family Asteraceae.{{GRIN | accessdate=11 March 2012}}{{cite web|title=Cirsium eatonii|work=Flora of North America|publisher=efloras.org|url=http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066368|accessdate =11 March 2012}}

The species has been found in Idaho, Montana, New Mexico, Wyoming, Nevada, Utah and Colorado.{{cite web|title=Cirsium eatonii (A. Gray) B.L. Rob.|work=USDA PLANTS database|url= http://plants.usda.gov/java/profile?symbol=CIEA|accessdate=11 March 2012}}