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

Introduction to Vascular Plants

Photograph

© Bryan Kelly-McArthur     (Photo ID #70679)


Map

E-Flora BC Static Map

Distribution of Erigeron pumilus
Click here to view the full interactive map and legend

SUBTAXA PRESENT IN BC

Erigeron pumilus var. intermedius

Species Information

General:
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.
Leaves:
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.
Flowers:
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.
Fruits:
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.

SourceThe Illustrated Flora of British Columbia

Ecology

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

Avg

Min

Max

Elevation (metres)
815 319 2100
Slope Gradient (%)
16 0 170

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

188 0 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 0 7
Modal Nutrient Regime
Class
C
# of field plots
 species was recorded in:
383
Modal BEC Zone Class
IDF

All BEC Zones (# of stations/zone) species was recorded in

BG(110), ESSF(11), IDF(130), PP(114), SBS(2)

Habitat and 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.

SourceThe Illustrated Flora of British Columbia