E-Flora BC: Electronic Atlas of the Flora of British Columbia

Senecio sheldonensis A.E. Porsild
Mount Sheldon butterweed
Asteraceae (Aster family)

Introduction to Vascular Plants

© Ryan Batten  Email the photographer   (Photo ID #66685)

E-Flora BC Static Map
Distribution of Senecio sheldonensis
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Species Information

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Perennial herb from a short rhizome or woody stem-base; stems erect, solitary, branched above, glabrous, 30-70 cm tall.
Basal leaves elliptic to oblanceolate, stalked, 2-15 cm long including the stalk, 0.6-3.4 cm wide, toothed, glabrous; stem leaves similar but larger, 2-21 cm long, 0.7-4.2 cm wide, egg-shaped to lanceolate, toothed, progressively reduced upwards, becoming unstalked.
Heads with ray and disk flowers, few to many on glabrous to sparsely long-hairy stalks in an open flat-topped inflorescence; involucres 7-12 mm tall; involucral bracts lanceolate to more oblong, purplish or black-hairy tipped, otherwise glabrous or rarely with inconspicuous unstalked glands at the tip, margins translucent; bracteoles few, conspicuous, tipped with purplish or black hairs; ray flowers yellow, 6-14 mm long; disk flowers yellow.
Achenes oblong, nerved, glabrous; pappus of white hairlike bristles.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Wet to moist meadows and forest openings in the montane to alpine zones; infrequent in N BC; N to YT and SW NT

Source: The Illustrated Flora of British Columbia


Ecological Framework for Senecio sheldonensis

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) 1090 1090 1090
Slope Gradient (%) 12 12 12
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
164 163 164
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
6 6 6
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: BWBS(1)


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References