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spiny plumeless thistle
89%
Carduus acanthoides
soft thistle
89%
Cirsium carolinianum
Texas thistle
87%
Cirsium texanum
Le Conte's thistle
85%
Cirsium lecontei
musk thistle
84%
Carduus nutans
Nuttall's thistle
84%
Cirsium nuttallii
Italian thistle
83%
Carduus pycnocephalus
sandhill thistle
83%
Cirsium repandum
horrid thistle
82%
Cirsium horridulum
winged plumeless thistle
82%
Carduus tenuiflorus
Virginia thistle
81%
Cirsium virginianum
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