
Origin: Introduced
Conservation Status: Not of concern
[none provided]
Occurring in scattered locations on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Occurring chiefly west of the Cascades crest in Washington; Washington and California; also in eastern North America.
PNW Herbaria: Specimen records of Tripleurospermum in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Tripleurospermum checklist entry
OregonFlora: Tripleurospermum information
E-Flora BC: Tripleurospermum atlas page
CalPhotos: Tripleurospermum photos