Origin: Introduced
Conservation Status: Not of concern
[none provided]
PNW Herbaria: Specimen records of Sonchus asper ssp. asper in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Sonchus asper ssp. asper checklist entry.
OregonFlora: Sonchus asper ssp. asper information.
E-Flora BC: Sonchus asper ssp. asper atlas page.
CalPhotos: Sonchus asper ssp. asper photos.
USDA Plants: Sonchus asper ssp. asper information.