Tribe Cynareae Rank Species | Higher classification Knapweeds | |
![]() | ||
Similar Knapweeds, Daisy family, Centaurea nigra, Centaurea paniculata, Centaurea phrygia |
Centaurea nigrescens
Centaurea nigrescens (Tyrol knapweed, short-fringed knapweed or Tyrol thistle) is a perennial plant of the star thistle genus that grows natively in Central and South-eastern Europe (from Southern Germany and Northern Italy to Romania and Bulgaria), but has also been introduced and is now a noxious weed in the Northern United States, Canada and Southern Australia. It has purple flowers and it flowers in the summer (June to September).






References
Centaurea nigrescens Wikipedia(Text) CC BY-SA