Page authors: Don Knoke, David Giblin
Erigeron subtrinervis
three-veined fleabane

Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to Washington, east to the Rocky Mountains.

Habitat: Moderately dry, open places at low to middle elevations.

Flowers: July-September

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Perennial from a short, woody base, 1.5-8 dm. tall, the stems clustered, amply leafy, spreading-hairy throughout.


Leaves triple-nerved, entire, the lower oblanceolate or spatulate, petiolate, mostly deciduous, the other becoming sessile but ample.


Heads 1-13 in a open inflorescence; involucre 6-9 mm. high; rays 65-150, blue or rarely white or pink, 9-18 mm. long and 1 mm. wide; pappus 20-30 bristles, a few of the outer ones shorter.

Accepted Name:
Erigeron subtrinervis Rydb. ex Porter & Britton
Publication: Mem. Torrey Bot. Club. 5: 328. 1894.

Synonyms & Misapplications:
(none provided)
Additional Resources:

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

WA Flora Checklist: Erigeron subtrinervis checklist entry.

OregonFlora: Erigeron subtrinervis information.

E-Flora BC: Erigeron subtrinervis atlas page.

CalPhotos: Erigeron subtrinervis photos.

USDA Plants: Erigeron subtrinervis information.

19 photographs:
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