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Centaurea jacea
Also called Brown knapweed, Brown-ray knapweed, Brown-rayed knapweed, Common knapweed, Hardheads, French Hardhead
Centaurea jacea, brown knapweed or brownray knapweed, is a species of herbaceous perennial plants in the genus Centaurea native to dry meadows and open woodland throughout Europe.
In Britain and America, it is often found as a hybrid of black knapweed, Centaurea nigra. Unlike the black knapweed, the flower heads always look as if they are rayed, forming a more open star rather than a brush-like tuft.
Brown knapweed is native to Europe, extending to West Siberia and Caucasus. It has been introduced in North America, where it is often considered an invasive species, particularly in the northeastern United States and Canada.
Centaurea acaulis · Akamas centaury · Centaurea alba · Centaurea ammocyanus · Rough star-thistle · Centaurea atropurpurea · Centaurea behen · Blessed Thistle · Red star-thistle · Karl-Henrikh's Centaury · Dusty miller · Centaurea collina
Text excerpted from the Wikipedia article Centaurea jacea by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
