Page authors: Don Knoke, David Giblin
Erigeron disparipilus
Snake River fleabane, white cushion fleabane

Distribution: Occurring east of the Cascades crest in the Snake River area in southeastern Washington; southeastern Washington to southeastern Oregon, east to southwestern Idaho.

Habitat: Dry, rocky hillsides at low to middle elevations.

Flowers: May-July

Origin: Native

Growth Duration: Perennial

Conservation Status: Sensitive in Washington (WANHP)


Perennial from a tap-root, 3-12 cm. high, the stem covered with very unequal, spreading hairs.


Leaves nearly all in a basal cluster, finely stiff-hairy, linear or linear-oblanceolate, up to 4 cm. long and 2 mm. wide.


Heads solitary; involucres 5-7 mm. high, with spreading short hairs and often glandular as well; rays 30-60, white, pistillate, becoming pinkish, 5-10 mm. long and 1.5-2.3 mm. wide; disk flowers yellow; pappus of 15-25 capillary bristles.

Accepted Name:
Erigeron disparipilus Cronquist
Publication: Brittonia. 6: 194. 1947.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Erigeron disparipilus in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Erigeron disparipilus checklist entry.

E-Flora BC: Erigeron disparipilus atlas page.

CalPhotos: Erigeron disparipilus photos.

USDA Plants: Erigeron disparipilus information.

15 photographs:
Group by