Plants of Oxfordshire: Asteraceae - Daisy Family, Centaurea - Knapweeds Genus
Centaurea debeauxii, Slender Knapweed
Centaurea moncktonii, Hybrid Knapweed
Centaurea montana, Perennial Cornflower
Centaurea nigra, Common Knapweed
Centaurea scabiosa, Greater Knapweed