Page authors: Don Knoke, David Giblin
Petasites japonicus
Japanese sweet coltsfoot
Specimens
Photos
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to Oregon.
Habitat: Forest edge, typically where moist and disturbed; generally escaping from cultivation.
Flowers: June-September
Origin: Introduced from Asia
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bees, flies, beetles, wasps
Description:
[none provided]
Accepted Name:
Petasites japonicus (Siebold & Zucc.) Maxim.
Publication: Award 34th Demidovian Prize 212. 1866.
Publication: Award 34th Demidovian Prize 212. 1866.
Synonyms & Misapplications:
Petasites japonicus (Siebold & Zucc.) Maxim. var. giganteus (F. Schmidt ex Trautv.) G. Nicholson [HC2]
Petasites japonicus (Siebold & Zucc.) Maxim. var. japonicus
Petasites japonicus (Siebold & Zucc.) Maxim. var. japonicus
Additional Resources:
PNW Herbaria: Specimen records of Petasites japonicus in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Petasites japonicus checklist entry.
OregonFlora: Petasites japonicus information.
E-Flora BC: Petasites japonicus atlas page.
CalPhotos: Petasites japonicus photos.
USDA Plants: Petasites japonicus information.
8 photographs:
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