Packera subnuda (de Candolle) Trock & T. M. Barkley var. subnuda
alpine meadow butterweed
Asteraceae (Aster family)
Introduction to Vascular Plants
alpine meadow butterweed
Asteraceae (Aster family)
Introduction to Vascular Plants
Photograph
Map
Distribution of Packera subnuda var. subnuda
Click here to view the full interactive map and legend
Species Information
General:
Perennial herb from a fibrous-rooted short rhizome; stems erect or ascending, solitary, simple or rarely branched above, 4-30 cm tall, glabrous.
Leaves:
Basal leaves nearly circular, rounded or spoon-shaped, long-stalked, 1-11 cm long including the stalk, 0.3-2 cm wide, entire to coarsely toothed or sometimes lobed, glabrous; stem leaves few and reduced, oblong-spoon-shaped to lanceolate, uppermost reduced to entire, purplish-tipped bracts.
Flowers:
Heads with ray and disk flowers, usually solitary, rarely 2; involucres 5-11 mm tall; involucral bracts linear-lanceolate with long-pointed tips, purplish-tinged towards the tips, glabrous; bracteoles few, usually purplish-tipped; ray flowers yellow, 6-12 mm long; disk flowers yellow.
Fruits:
Achenes oblong, ribbed, glabrous; 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 subnuda var. subnuda
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) |
1417 | 30 | 2562 |
| Slope
Gradient (%) |
22 | 0 | 120 |
|
Aspect (degrees) |
3 | 0 | 360 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
3 | 1 | 8 |
| Modal
Nutrient Regime
Class |
B | ||
| #
of field plots species was recorded in: |
66 | ||
| Modal
BEC Zone Class |
AT | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
AT(19), BWBS(4), CMA(3), CWH(6), ESSF(12), ICH(2), IDF(3), MH(4), MS(1), SBPS(2), SBS(5) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Moist to mesic streambanks, seepages and meadows from the upper montane to alpine zones; locally common in SC and SE BC; E to SW AB and S to WY and CA.Synonyms
Synonyms and Alternate Names:
Senecio cymbalarioides Nutt., nom. illeg., non Senecio cymbalarioides H. Buek