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Host Plants

confirmed

Likely
Rose Thistle
Cirsium andersonii
Franciscan Thistle
Cirsium andrewsii
Indian Thistle
Cirsium brevistylum
Slough Thistle
Cirsium crassicaule
Peregrine Thistle
Cirsium cymosum
Fountain Thistle
Cirsium fontinale
Cobweb Thistle
Cirsium occidentale
Surf Thistle
Cirsium rhothophilum