Centaurea
centaurea, knapweed, star-thistle
Specimens
Photos
Origin: Introduced
Conservation Status: Not of concern
Description:
[none provided]
Accepted Name:
Centaurea
Publication: Sp. Pl. 2: 909. 1753; Gen. Pl. ed. 5, 389. 1754.
Publication: Sp. Pl. 2: 909. 1753; Gen. Pl. ed. 5, 389. 1754.
Synonyms & Misapplications:
Cnicus [HC]
Species in Centaurea:
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Centaurea benedicta – blessed thistle
Occurring east of the Cascades crest in Washington; Washington to California, east to the Rocky Mountains, also in eastern North America. -
Centaurea calcitrapa – purple star-thistle, red star-thistle Occurring east of the Cascades crest in Washington; Washington to California, east to New Mexico, also in eastern North America.
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Centaurea cyanus – bachelor's button, garden cornflower Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Atlantic Coast.
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Centaurea diffusa – diffuse knapweed, tumble knapweed, white knapweed Occurring on both sides of the Cascades crest in Washington; Yukon Territory to California, east across much of the U.S. and Canada to northeastern North America.
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Centaurea iberica – Iberian knapweed, Iberian star-thistle Occurring east of the Cascades crest in Washington; Washington to California, also in Wyoming and Kansas.
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Centaurea jacea – brown knapweed, brownray knapweed 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.
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Centaurea macrocephala – globe knapweed Occurring east of the Cascades crest in Washington; central Washington to Montana, also in Colorado, and Great Lakes region to northeastern North America.
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Centaurea melitensis – Maltese star-thistle, tocalote Occurring chiefly west of the Cascades in Washington; British Columbia to California and Mexico, east to Texas and eastern North America.
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Centaurea montana – mountain bluet, mountain cornflower, montane star-thistle Occurring chiefly west of the Cascades crest in Washington; Alaska to Oregon, east to Montana, Idaho, and Utah, also from Great Lakes region to northeastern North America.
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Centaurea nigra – black knapweed, lesser knapweed Occurring on both sides of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, east to Montana, also Great Lakes region east to northeastern North America.
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Centaurea nigrescens – short fringed knapweed, Tyrol knapweed Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana and Wyoming, also from Great Lakes region east to northeastern North America.
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Centaurea solstitialis – yellow star-thistle Occurring chiefly east of the Cascades crest and in the Columbia River Gorge in Washington; Washington to California, east across most of North America to the Atlantic Coast.
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Centaurea stoebe – spotted knapweed Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
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ssp. australis – spotted knapweed Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
- Centaurea trichocephala – featherhead knapweed
Additional Resources:
PNW Herbaria: Specimen records of Centaurea in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Centaurea checklist entry.
OregonFlora: Centaurea information.
E-Flora BC: Centaurea atlas page.
CalPhotos: Centaurea photos.
USDA Plants: Centaurea information.
269 photographs:
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