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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General:
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.
Leaves:
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.
Flowers:
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.
Fruits:
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

Ecology

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

Minimum

Average

Maximum

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
Class
D
Number of field plots
 species was recorded in:
4
Modal BEC Zone Class
IDF
All BEC Zones (# of stations/zone) species was recorded in: ESSF(1), IDF(2), PP(1)

Climate

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

Related Databases

General References