Page author: David Giblin
Petasites frigidus var. palmatus
western coltsfoot

Distribution: Occurring chiefly west of the Cascades crest in Washington, also in the Blue Mountains of southeast Washington; British Columbia to northeast Oregon, east across Canada to the Atlantic Coast.

Habitat: Damp woods and swampy areas from the lowlands to middle elevations in the mountains.

Flowers: March-July

Origin: Native

Conservation Status: Not of concern


[none provided]

Accepted Name:
Petasites frigidus (L.) Fr. var. palmatus (Aiton) Cronquist
Publication: Rhodora. 48: 124. 1946.

Synonyms & Misapplications:
Nardosmia palmata (Aiton) Hook.
Petasites arcticus A.E. Porsild
Petasites frigidus (L.) Fr. ssp. arcticus (A.E. Porsild) Cody
Petasites palmatus (Aiton) A. Gray
Petasites palmatus (Aiton) A. Gray ssp. speciosus (Nutt.) Toman
Petasites speciosus (Nutt.) Piper
Tussilago palmata Aiton
Additional Resources:

PNW Herbaria: Specimen records of Petasites frigidus var. palmatus in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Petasites frigidus var. palmatus checklist entry.

E-Flora BC: Petasites frigidus var. palmatus atlas page.

CalPhotos: Petasites frigidus var. palmatus photos.

USDA Plants: Petasites frigidus var. palmatus information.

41 photographs:
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