Cirsium cymosum is a North American species of thistle known by the common name peregrine thistle. It is native to the western United States, where it has been found in California, Oregon, Nevada, Utah, Idaho, Wyoming, and Montana. Varieties \n* Cirsium cymosum var. canovirens (Rydb.) D.J.Keil - most of species range \n* Cirsium cymosum var. cymosum - California, Nevada, Oregon