Page authors: Don Knoke, David Giblin
Eucephalus engelmannii
Engelmann's aster

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

Habitat: Open woods and slopes, from foothills to high elevations in the mountains.

Flowers: June-September

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bees, flies, butterflies


Fibrous-rooted perennial usually from a stout rhizome, 5-15 dm. tall.


Lowermost leaves reduced and scale-like, the others numerous and nearly alike, sessile, entire, lanceolate or lance-ovate to elliptic, 5-10 cm. long and 1.5-3.5 cm. wide, usually sub-glabrous.


Inflorescence short, rounded; heads rather large, the involucre 8-12 mm. high, the bracts imbricate, with a prominent, keeled mid-vein, papery below, the outer pointed and greenish upward, the inner blunt-tipped with purplish, hairy margins; rays about 13, pinkish-purple or occasionally white, 1.5-2.5 cm. long.


Achenes hairy throughout.

Accepted Name:
Eucephalus engelmannii (D.C. Eaton) Greene
Publication: Pittonia. 3: 54. 1896.

Synonyms & Misapplications:
Aster engelmannii (D.C. Eaton) A. Gray [HC]
Additional Resources:

PNW Herbaria: Specimen records of Eucephalus engelmannii in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Eucephalus engelmannii checklist entry

OregonFlora: Eucephalus engelmannii information

E-Flora BC: Eucephalus engelmannii atlas page

CalPhotos: Eucephalus engelmannii photos

18 photographs:
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