Distribution: Occurring chiefly east of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, east across most of North America to the Atlantic Coast.
Habitat: Noxious weed of dry, open areas and stream banks.
Flowers: June-August
Origin: Introduced from Eurasia
Conservation Status: Not of concern
Pollination: Bees, flies, beetles, wasps
[none provided]
PNW Herbaria: Specimen records of Onopordum acanthium ssp. acanthium in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Onopordum acanthium ssp. acanthium checklist entry.
OregonFlora: Onopordum acanthium ssp. acanthium information.
E-Flora BC: Onopordum acanthium ssp. acanthium atlas page.
CalPhotos: Onopordum acanthium ssp. acanthium photos.
USDA Plants: Onopordum acanthium ssp. acanthium information.
