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

Erigeron pumilus Nutt.
Shaggy Fleabane (shaggy daisy; Tall Annual Willowherb)
Asteraceae (Aster family)

Introduction to Vascular Plants

© Bryan Kelly-McArthur  Email the photographer   (Photo ID #70679)

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Distribution of Erigeron pumilus
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Erigeron pumilus var. intermedius

Species Information

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Perennial herb from a taproot and a short to long, little- to much-branched stem-base; stems erect, simple to much-branched, with stiff, spreading hairs, often also finely glandular and slightly sticky, especially beneath the heads, 5-30 cm tall.
Basal leaves oblanceolate, gradually tapered to the stem-bases, stiff-hairy, sometimes sparsely so, 2-8 cm long, 1-8 mm wide, fewer and soon deciduous in larger forms; stem leaves similar or sometimes lacking, reduced upwards.
Heads with ray and disk flowers, solitary to numerous, sometimes as many as 75, the disks 7-15 mm wide; involucres 4-7 mm tall; involucral bracts sparsely to densely spreading stiff-hairy, subequal to equal, the tips long-pointed, green with brown midveins and sometimes narrow, papery margins; ray flowers 50-100 or more, usually white, sometimes pale pink or blue, 6-15 mm long, 0.7-1.5 mm wide; disk flowers 3-5 mm long.
Achenes 2-nerved, sparsely to moderately short-hairy; pappus double, the inner of 15-27 bristles, the outer of well-developed scales, sometimes intermingled with the inner bristles.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry grasslands or shrublands in the steppe zone; common in S BC; E to SK and KS and S to AZ, NM, and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Erigeron pumilus

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) 319 815 2100
Slope Gradient (%) 0 16 170
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 188 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 2 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(110), ESSF(11), IDF(130), PP(114), SBS(2)


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

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