Centaurea

Centaurea × axonensis

Centaurea azizana

Centaurea bannatica

Centaurea × barbeyana

Centaurea × barcinonensis

Centaurea barrasii

Centaurea × basilei

Centaurea × baumgarteniana

Centaurea beatica

Centaurea × beckeriana

Centaurea bellardi

Centaurea × beltekiana

Centaurea beltranii

Centaurea × beregiensis

Centaurea × bergadensis

Centaurea × beskidiana

Centaurea besserana

Centaurea beturica

Centaurea bieberetsinii

Centaurea iberica

Iberian knapweed