Origin: Introduced
Conservation Status: Not of concern
[none provided]
Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to California, east across Canada and the southwestern U.S. to eastern North America.PNW Herbaria: Specimen records of Silybum in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Silybum checklist entry
OregonFlora: Silybum information
E-Flora BC: Silybum atlas page
CalPhotos: Silybum photos