Centaurea nigra L.
Family: Asteraceae
black knapweed,  more...
[Centaurea nigra var. radiata L.]
Centaurea nigra image
Cindy Roche  
Etymology: Centaurea: ancient Greek plant-name, poetically associated with Chiron, the Centaur, but without wholly satisfactory explanation
Plants: perennial forb
Conservation Status: Introduced - adventive
Centaurea nigra image
Cindy Roche  
Centaurea nigra image
from USDA Plants website  
Centaurea nigra image
Centaurea nigra image