Distribution: Known from a few scattered locations in Washington; British Columbia to California, in Montana, east from California to Colorado and Arizona, also across Canadian Great Plains to Great Lakes region and northeastern North America.
Habitat: Roadsides, ditches, forest openings and edge, wastelots, and other disturbed areas generally at low elevations.
Flowers: August-October
Origin: Introduced from Eurasia
Growth Duration: Biennial, Perennial
Conservation Status: Not of concern
Pollination: Bumblebees, bees
[none provided]
Publication: Sp. Pl. 2: 816. 1753.
PNW Herbaria: Specimen records of Arctium lappa in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Arctium lappa checklist entry
OregonFlora: Arctium lappa information
E-Flora BC: Arctium lappa atlas page
CalPhotos: Arctium lappa photos
