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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Petasites frigidus var. palmatus (Arctic sweet coltsfoot)
Bransford, W.D. and Dolphia

Petasites frigidus var. palmatus

Petasites frigidus (L.) Fr. var. palmatus (Aiton) Cronquist

Arctic Sweet Coltsfoot, Palmate Coltsfoot, Palmate Butterbur, Western Coltsfoot

Asteraceae (Aster Family)

Synonym(s): Nardosmia arctica, Petasites arcticus, Petasites frigidus ssp. arcticus, Petasites frigidus ssp. palmatus, Petasites hookerianus, Petasites palmatus, Petasites speciosus


USDA Native Status: L48 (N), CAN (N)


From the Image Gallery

1 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Size Notes: Up to about 4 feet tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

Bloom Color: White , Pink , Yellow , Purple
Bloom Time: Mar , Apr
Bloom Notes: White or pinkish to purplish, sometimes yellow.


USA: CA , CT , ID , MA , ME , MI , MN , ND , NH , NY , OR , VT , WA , WI
Canada: AB , BC , MB , NB , NL , NS , NT , NU , ON , PE , QC , SK , YT

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Santa Barbara Botanic Garden - Santa Barbara, CA

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

USDA: Find Petasites frigidus var. palmatus in USDA Plants
FNA: Find Petasites frigidus var. palmatus in the Flora of North America (if available)
Google: Search Google for Petasites frigidus var. palmatus


Record Modified: 2022-12-30
Research By: TWC Staff

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