Centaurea nigra

Centaurea nigra - Species Dictionary - UK and Ireland : iSpot Nature - Your place to share nature. iSpot is a website aimed at helping anyone identify anything in nature. Once you've registered, you can add an observation to the website and suggest an identification yourself or see if anyone else can identify it for you.

Black Knapweed, Common Knapweed, Hardhead
Natural History Museum's UK Species Inventory
Plantae, Tracheophyta, Magnoliopsida, Asterales, Asteraceae, Centaurea, Centaurea nigra
Centaurea nigra subsp. nigra, Centaurea nigra var. nemoralis, Centaurea nigra var. nigra, Centaurea nigra var. radiata