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prairie thistle
38%
Cirsium canescens
European marsh thistle
35%
Cirsium palustre
Parry's thistle
35%
Cirsium parryi
sand dune thistle
35%
Cirsium pitcheri
meadow thistle
35%
Cirsium scariosum
star campylium moss
35%
Campylium stellatum
Arizona thistle
33%
Cirsium arizonicum
Palouse thistle
33%
Cirsium brevifolium
pasture thistle
33%
Cirsium pumilum
Texas thistle
33%
Cirsium texanum
Franciscan thistle
30%
Cirsium andrewsii
Douglas' thistle
30%
Cirsium douglasii
mountaintop thistle
30%
Cirsium eatonii
Flodman's Thistle
30%
Cirsium flodmanii
fountain thistle
30%
Cirsium fontinale
Mojave thistle
30%
Cirsium mohavense
Nuttall's thistle
30%
Cirsium nuttallii
wavy-leaf thistle
30%
Cirsium undulatum
Virginia thistle
30%
Cirsium virginianum
Greene's thistle
30%
Cirsium inamoenum
white thistle
29%
Cirsium hookerianum
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