Page authors: Don Knoke, David Giblin
Eurybia radulina
rough-leaved aster

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

Habitat: Rocky outcroppings, forest edges and openings at low to middle elevations.

Flowers: July-September

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bees, flies, butterflies


Herbaceous perennial from well-developed rhizomes, 1-7 dm. tall, the stem and lower surface of the leaves with short hairs.


Leaves firm, usually sharply toothed, broadly oblanceolate or broader, the largest ones, found a little above the base of the stem, up to 10 cm long and 4 cm. wide; lowest leaves strongly reduced, middle and upper leaves gradually reduced, the stem appearing leafy.


Heads several in a flat-topped inflorescence; involucre imbricate in several series, the bracts green-tipped, often purple-margined; rays lavender to white, 8-12 mm. long; disk corollas yellow, 7-8 mm. long, the tube longer than the slender limb; pappus bristles of various lengths.



Identification Notes:

The large, sharply-toothed leaves are distinctive.

Accepted Name:
Eurybia radulina (A. Gray) G.L. Nesom
Publication: Phytologia. 77: 261. 1995.

Synonyms & Misapplications:
Aster radulinus A. Gray [HC]
Additional Resources:

PNW Herbaria: Specimen records of Eurybia radulina in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Eurybia radulina checklist entry

OregonFlora: Eurybia radulina information

E-Flora BC: Eurybia radulina atlas page

CalPhotos: Eurybia radulina photos

23 photographs:
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