Centaurea

Centaurea (Cen-tau-ré-a ,syn. Cyanus L.) is a genus of about 350-500 species of herbaceous thistles and thistle-like flowering plants in the family Asteraceae, mostly native to the Old World. Common names for different species include star thistle, cornflower, knapweed and bluet. Some species are cultivated as ornamental plants in gardens.

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