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

Erigeron philadelphicus L.
Philadelphia fleabane (Philadelphia daisy)
Asteraceae (Aster family)

Introduction to Vascular Plants

© Paul Handford  Email the photographer   (Photo ID #88599)

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Distribution of Erigeron philadelphicus
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Species Information

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Biennial or short-lived perennial herb with a short, simple stem-base, rarely annual; stems erect, usually solitary, branched above, more or less hairy with long, spreading hairs, occasionally nearly glabrous, 20-70 cm tall.
Basal leaves broadly oblanceolate to egg-shaped, coarsely round-toothed or lobed, rounded at the tips, hairy like the stems, narrowly tapering to a short stalk, 15-30 cm long, 1.5-12 cm wide; stem leaves similar, becoming reduced and unstalked upwards, clasping at the base, round- to sharp-toothed.
Heads with ray and disk flowers, 1 to many in an open inflorescence, the disks 6-15 mm wide; involucres 4-6 mm tall; involucral bracts more or less stiff-hairy with flattened hairs or sometimes nearly glabrous, tapering to a slender tip, equal, light greenish or brownish with the translucent margins occasionally purplish; ray flowers numerous, about 150, deep pink to reddish-purple or white, 5-10 mm long, 0.2-0.6 mm wide; disk flowers 2.5-3.2 mm long.
Achenes 2-nerved, sparsely hairy; pappus of 20-30 bristles, often shorter than the disk flowers.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Blooming Period:
Mid Spring
Fruit/Seed characteristics:
Colour: Brown
Present from Spring to Summer
Source:  The USDA

Habitat / Range

Habitat Range: Moist to mesic grasslands, shrublands and open forests in the lowland, steppe and montane zones; frequent throughout all but NW BC; N to YT and NT, E to NF and S to FL, TX and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Erigeron philadelphicus

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) 279 1061 2048
Slope Gradient (%) 0 12 68
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 136 330
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: BG(1), BWBS(1), ESSF(10), ICH(5), IDF(5), MS(1), PP(1), SBS(4)


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