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

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

Introduction to Vascular Plants

© Jim Riley  Email the photographer   (Photo ID #69092)

E-Flora BC Static Map
Distribution of Erigeron poliospermus
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SUBTAXA PRESENT IN BC
Erigeron poliospermus var. poliospermus

Species Information

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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.

Source: The Illustrated Flora of British Columbia

Habitat / Range

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

Source: The 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

Minimum

Average

Maximum

Elevation (metres) 560 642 720
Slope Gradient (%) 23 33 40
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
23 180 270
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 2 4
Modal Nutrient Regime
Class
C
Number 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)

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 cool temperate & cool semiarid.

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References