Packera paupercula (Michx.) Á. Löve & D. Löve
Canadian butterweed
Asteraceae (Aster family)

Introduction to Vascular Plants


© Jamie Fenneman     (Photo ID #6967)


E-Flora BC Static Map

Distribution of Packera paupercula
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Species Information

Perennial herb from a fibrous-rooted short, simple or slightly branched woody stem-base, occasionally with a few short slender stolons; stems erect, solitary or sometimes several, few-branched upwards, 10-70 cm tall.
Basal leaves oblanceolate to elliptic or oblong, stalked, 2-20 cm long including the stalk, 0.4-4 cm wide, nearly entire to toothed, glabrous; stem leaves lanceolate, deeply toothed or lobed, progressively reduced upwards and becoming unstalked.
Heads with ray and disk flowers, few to several in a clustered, flat-topped inflorescence; involucres 3-9 mm tall; involucral bracts lanceolate, green or purplish-tipped, glabrous to moderately woolly-hairy, margins translucent, hairy at tips; bracteoles few, inconspicuous; ray flowers yellow, mostly 5-10 mm long, rarely lacking; disk flowers yellow.
Achenes oblong, ribbed, glabrous or sometimes finely hairy; pappus of white hairlike bristles.

SourceThe Illustrated Flora of British Columbia


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.


Ecological Framework for Packera paupercula

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class




Elevation (metres)
1184 134 2105
Slope Gradient (%)
14 0 75

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

193 64 355
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 1 7
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

All BEC Zones (# of stations/zone) species was recorded in

BAFA(3), BWBS(3), CWH(5), ESSF(6), ICH(7), IDF(4), MS(2), SBS(7), SWB(10)

Habitat and Range

Moist forests, meadows and streambanks in the lowland, steppe and montane zones; common throughout BC, except absent on the Queen Charlotte Islands; N to AK, YT, NT, E to PQ and S to GA and OR.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Senecio balsamitae Muhl. ex Willd.
Senecio crawfordii (Britton) G.W. Douglas & G. Ruyle-Douglas
Senecio gaspensis Greenm.
Senecio gaspensis var. firmifolius (Greenm.) Fernald
Senecio pauperculus Michx.
Senecio pauperculus Michx.
Senecio pauperculus var. balsamitae (Muhl. ex Willd.) Fernald
Senecio pauperculus var. crawfordii (Britton) T.M. Barkley
Senecio pauperculus var. firmifolius (Greenm.) Greenm.
Senecio pauperculus var. neoscoticus Fernald
Senecio pauperculus var. praelongus (Greenm.) House
Senecio pauperculus var. thompsoniensis (Greenm.) B. Boivin
Senecio tweedyi Rydb.