Perennial herb from a creeping rhizome; stems erect, branched above, numerous, more or less white woolly-hairy, 10-50 cm tall; flowering stems appear before the leaves.
Basal leaves triangular on long stalks, shallowly to conspicuously toothed, usually with 20 or more teeth per side, white-woolly to nearly glabrous beneath, green and somewhat hairy above, 5-35 cm long including the stalk, 5-25 cm wide; stem leaves reduced to parallel-veined bracts, 1-8 cm long, reduced upwards, more or less white woolly-hairy.
Heads disciform or with ray and disk flowers, several to many in a round- to flat-topped inflorescence, stalks more or less white woolly-hairy; involucres 7-12 mm tall; involucral bracts oblanceolate to lanceolate, pointed, hairy basally with multicellular glandular hairs, the crosswalls often purple, margins translucent and often ragged; ray flowers few, whitish or pinkish, 6-10 mm long; disk flowers whitish.
Achenes 5-to 10-ribbed, glabrous; pappus of numerous white capillary bristles.
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
||Value / Class
Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
of field plots
species was recorded in:
BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in
|BAFA(1), BG(1), BWBS(42), CWH(1), ESSF(36), ICH(38), IDF(33), IMA(2), MH(1), MS(64), PP(4), SBPS(33), SBS(58), SWB(6)|
Source: Klinkenberg 2013
|Scientific Name||Origin Status||Provincial Status||BC List|
(Red Blue List)
|Petasites frigidus var. frigidus||Native||S5||Yellow||Not Listed|
|Petasites frigidus var. nivalis||Native||S5||Yellow||Not Listed|
|Petasites frigidus var. palmatus||Native||S5||Yellow||Not Listed|
|Petasites frigidus var. sagittatus||Native||S5||Yellow||Not Listed|
|Petasites frigidus var. x vitifolius||Native||SNA||No Status||Not Listed|
Synonyms and Alternate Names:
Petasites dentatus Blank.
Petasites sagittatus (Banks ex Pursh) A. Gray