Page authors: Don Knoke, David Giblin
Erigeron basalticus
basalt fleabane

Distribution: Occurring east of the Cascades crest where endemic to Kittitas and Yakima counties in Washington.

Habitat: Cliff crevices in rocky canyons.

Flowers: May-July

Origin: Native

Growth Duration: Perennial

Conservation Status: Threatened in Washington (WANHP)

Pollination: Bees, butterflies, flies, apomixis?


Several stems from a perennial taproot, sprawling, branched and leafy, especially near the tip.


Leaves with stiff, blunt hairs and fine glands, wedge-shaped to obovate, up to 4 cm. long and 1.5 cm. wide, deeply tri-lobed, the lobes broad.


Heads terminating the branches, the disk 8-12 mm. wide; involucre 5-6 mm. high, densely glandular; rays 25-30, light pink or pinkish-purple, 5-7 mm. long and 1.5 mm. wide; disk corollas 3-4 mm. long, pale yellow; pappus of 10-15 capillary bristles.

Accepted Name:
Erigeron basalticus Hoover
Publication: Leafl. W. Bot. 4: 40. 1944.

Synonyms & Misapplications:
(none provided)
Additional Resources:

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

WA Flora Checklist: Erigeron basalticus checklist entry

OregonFlora: Erigeron basalticus information

E-Flora BC: Erigeron basalticus atlas page

CalPhotos: Erigeron basalticus photos

12 photographs:
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