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mountaintop thistle
45%
Cirsium eatonii
bull thistle
38%
Cirsium vulgare
Greene's thistle
37%
Cirsium inamoenum
peregrine thistle
34%
Cirsium cymosum
wavy-leaf thistle
34%
Cirsium undulatum
dwarf thistle
31%
Cirsium drummondii
New Mexico thistle
30%
Cirsium neomexicanum
Douglas' thistle
30%
Cirsium douglasii
meadow thistle
29%
Cirsium scariosum
Palouse thistle
29%
Cirsium brevifolium
camas
29%
Camassia quamash
Canada thistle
28%
Cirsium arvense
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