Packera paupercula (Michx.) Á. Löve & D. Löve
Canadian butterweed
Asteraceae (Aster family)
Introduction to Vascular Plants
Canadian butterweed
Asteraceae (Aster family)
Introduction to Vascular Plants
Species Information
General:
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.
Leaves:
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.
Flowers:
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.
Fruits:
Achenes oblong, ribbed, glabrous or sometimes finely hairy; pappus of white hairlike bristles.
Illustration
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
Ecology
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)
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 |
||
|
Avg |
Min |
Max |
|
| Elevation
(metres) |
1184 | 134 | 2105 |
| Slope
Gradient (%) |
14 | 0 | 75 |
|
Aspect (degrees) |
193 | 64 | 355 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
4 | 1 | 7 |
| Modal
Nutrient Regime
Class |
D | ||
| #
of field plots species was recorded in: |
56 | ||
| Modal
BEC Zone Class |
SWB | ||
|
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) | ||
|
Source:
Klinkenberg 2013
|
|||
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.Status Information
Synonyms
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.