Erigeron poliospermus A. Gray
Hairy-seeded Fleabane (Buff Daisy; cushion daisy; cushion fleabane; purple cushion fleabane)
Asteraceae (Aster family)

Introduction to Vascular Plants

Photograph

© Jim Riley     (Photo ID #69092)


Map

E-Flora BC Static Map

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

SUBTAXA PRESENT IN BC

Erigeron poliospermus var. poliospermus

Species Information

General:
Perennial herb from a taproot and short-branched stem-base; stems erect, simple or occasionally branched in larger forms, solitary, sparsely to densely stiff-hairy, obscurely to moderately glandular, 3-30 cm tall.
Leaves:
Basal leaves linear-oblanceolate to spoon-shaped, hairy and glandular like the stems, long-stalked, 1-8 cm long, 1-12 mm wide; stem leaves similar, few, mostly linear, somewhat reduced upwards.
Flowers:
Heads with ray and disk flowers, solitary or occasionally several in larger forms, the disks 9-20 mm wide; involucres 5-9 mm tall; involucral bracts sparsely to densely stiff-hairy with long, white hairs, obscurely to conspicuously glandular, more or less equal, green, sometimes with brown midveins and narrow, papery margins; ray flowers 15-45, pink or purple to deep blue or violet, 5-14 mm long, 1.3-3.6 mm wide, occasionally reduced and inconspicuous or lacking; disk flowers 4.0-6.5 mm long.
Fruits:
Achenes 2-nerved, densely, long, silky-hairy, these appressed or ascending and sometimes obscuring the outer pappus; pappus double, the inner of 20-30 firm bristles, the outer of well-developed short scales.

SourceThe Illustrated Flora of British Columbia

Ecology

Ecological Framework for Erigeron poliospermus

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)
642 560 720
Slope Gradient (%)
33 23 40

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

180 23 270
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 1 4
Modal Nutrient Regime
Class
C
# of field plots
 species was recorded in:
5
Modal BEC Zone Class
PP

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

BG(2), IDF(1), PP(2)

Habitat and Range

Dry rocky slopes in the steppe zone; rare in extreme SC BC; S to ID and OR.

SourceThe Illustrated Flora of British Columbia