Page authors: Don Knoke, David Giblin
Erigeron filifolius
Peck's threadleaf fleabane

Distribution: Occurring east of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, east to Montana, Idaho, and Utah.

Habitat: Sagebrush plains, dry slopes, and grasslands.

Flowers: May-July

Origin: Native

Conservation Status: Not of concern


Perennial from a taproot and branched, short woody base, 1-5 dm. tall, the stem densely covered with fine, appressed hairs aligned in one direction.


Leaves both basal and cauline, linear or linear-filiform, 1-8 cm. long and 0.3-3 mm. wide, of uniform width.


Heads solitary or several; involucre 4-6 mm. high, with fine, soft hairs or small glands or both; rays 15-125, blue, pink or white, 3-13 mm. long and 1-2 mm. wide; pappus of 20-30 simple hairs.

Accepted Name:
Erigeron filifolius (Hook.) Nutt.
Publication: Trans. Amer. Philos. Soc., n. s. 7: 308. 1840.

Synonyms & Misapplications:
Erigeron filifolius (Hook.) Nutt. var. filifolius [HC]
Erigeron filifolius (Hook.) Nutt. var. robustior M. Peck [HC]
Additional Resources:

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

WA Flora Checklist: Erigeron filifolius checklist entry.

E-Flora BC: Erigeron filifolius atlas page.

CalPhotos: Erigeron filifolius photos.

USDA Plants: Erigeron filifolius information.

54 photographs:
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