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

Packera macounii (Greene) W.A. Weber & Á. Löve
Macoun's groundsel
Asteraceae (Aster family)

Introduction to Vascular Plants

© Paul Chapman  Email the photographer   (Photo ID #66375)

E-Flora BC Static Map
Distribution of Packera macounii
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Species Information

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Perennial herb from a fibrous-rooted, short, ascending or horizontal rhizome or woody stem-base; stems erect, solitary or several, branched above, glabrous or sparsely long-hairy to densely woolly-hairy, 13-85 cm tall.
Basal leaves thick, lanceolate to oblanceolate, stalked, 4-27 cm long including the stalk, 0.5-3 cm wide, thinly white-woolly when young becoming hairless by flowering time, entire to coarsely toothed; stem leaves similar, lanceolate to linear, thinly to densely woolly-hairy in the leaf axils, progressively reduced upwards, becoming unstalked.
Heads with ray and disk flowers, few to many in an open, flat-topped inflorescence; involucres 5-9 mm tall; involucral bracts lanceolate, hairy at the tips, green, margins translucent; bracteoles few, inconspicuous; ray flowers yellow, mostly 6-12 mm long; disk flowers yellow.
Achenes oblong, nerved, glabrous; pappus of white hairlike bristles.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry open forests, disturbed areas and rock outcrops or limestone quarries in the lowland zone; rare on S Vancouver Island, Texada Island and adjacent mainland; S to OR.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Packera macounii

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) 777 1094 1982
Slope Gradient (%) 0 2 7
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
130 52 335
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 4 7
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: ESSF(1), IDF(2), PP(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.

Synonyms and Alternate Names

Senecio ligulifolius Greene
Senecio macounii Greene

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References