Knapweed |
Centaurea nigra |
![]() Photo ©
Carl Farmer |
Very common in grassland and moorland, roadsides, forestry rides, etc. Flowerhead diameter c 3 cm ID: Unmistakable in flower, except when the flowers are rayed making it look like Greater Knapweed. This however has green involucral bracts, whereas Knapweed has brown ones. Bract colour can also be used to separate the species when in bud or fruit. Both Greater Knapweed and the rayed form of Knapweed are very rare in the area. Other features: Flowers occasionally white. Stem is swollen below the flowerhead. |
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Photo ©
Carl Farmer |
![]()
Photo ©
Carl Farmer |
![]()
Photo ©
Carl Farmer |
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Photo ©
Carl Farmer Left: Flowerhead after seeds dispersed. Above: Winter stems |