Centaurea jacea
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Template:Short description Template:Speciesbox
Centaurea jacea, brown knapweed[1] or brownray knapweed, is a species of herbaceous perennial plants in the genus Centaurea native to dry meadows and open woodland throughout Europe. It grows to Script error: No such module "convert". tall, and flowers mainly from June to September. It has simple leaves that are alternate in arrangement.[2]
In Britain and America, it is often found as a hybrid[3] of black knapweed, Centaurea nigra.[4] 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.
References
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- ↑ Template:BSBI 2007
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