Page authors: Don Knoke, David Giblin
Symphyotrichum subspicatum
Douglas' aster, Douglas's aster

Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana and Idaho.

Habitat: Moist woods, streambanks and seashores.

Flowers: July-September

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Fibrous-rooted perennial from a creeping rhizome, highly variable in size, the herbage pubescent.


Leaves toothed, the lower oblanceolate, petiolate, often deciduous; other leaves lanceolate, sessile, 5-12 cm. long and 1-3 cm. wide, 4-8 times as long as wide.


Inflorescence an open, leafy panicle; involucre bracts firm, thick, strongly imbricate, the tips often recurved, the base conspicuously yellowish or brownish, the margins papery; disk flowers numerous, yellow; rays blue to purple, 1-2 cm. long; pappus of numerous reddish capillary bristles.


Achenes somewhat hairy.

Accepted Name:
Symphyotrichum subspicatum (Nees) G.L. Nesom
Publication: Phytologia. 77: 293. 1995.

Synonyms & Misapplications:
Aster bulteri Rydb.
Aster douglasii Lindl.
Aster maccallae Rydb.
Aster subspicatus Nees [HC]
Aster subspicatus Nees var. grayi (Suksd.) Cronquist
Aster subspicatus Nees var. subspicatus
Symphyotrichum subspicatum (Nees) G.L. Nesom var. grayi (Suksd.) G.L. Nesom
Symphyotrichum subspicatum (Nees) G.L. Nesom var. subspicatum
Additional Resources:

PNW Herbaria: Specimen records of Symphyotrichum subspicatum in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Symphyotrichum subspicatum checklist entry.

OregonFlora: Symphyotrichum subspicatum information.

E-Flora BC: Symphyotrichum subspicatum atlas page.

CalPhotos: Symphyotrichum subspicatum photos.

USDA Plants: Symphyotrichum subspicatum information.

43 photographs:
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