Page author: David Giblin
Centaurea jacea
brown knapweed, brownray knapweed

Distribution: Occurring on both sides of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, east to the Rocky Mountains, also from the Great Lakes region east to the Atlantic Coast.

Habitat: Roadsides, fields, ditches, meadows, shores, wastelots, and other disturbed, open areas at low to middle elevations.

Flowers: July-September

Origin: Introduced from Eurasia

Growth Duration: Perennial

Conservation Status: Not of concern


[none provided]

Accepted Name:
Centaurea jacea L.
Publication: Sp. Pl. 2: 914. 1753.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Centaurea jacea in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Centaurea jacea checklist entry.

OregonFlora: Centaurea jacea information.

E-Flora BC: Centaurea jacea atlas page.

CalPhotos: Centaurea jacea photos.

USDA Plants: Centaurea jacea information.

28 photographs:
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