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

Erigeron poliospermus A. Gray var. poliospermus
cushion fleabane (purple cushion fleabane)
Asteraceae (Aster family)

Introduction to Vascular Plants
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E-Flora BC Static Map
Distribution of Erigeron poliospermus var. poliospermus
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Species Information

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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.
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.
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.
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


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.

Synonyms and Alternate Names

Erigeron poliospermus var. typicus Cronquist

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References