| Centaurea nigrescens | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Centaurea |
| Species: | C. nigrescens |
| Binomial name | |
| Centaurea nigrescens Willd. | |
| Synonyms | |
Centaurea dubiaSuter | |
Centaurea nigrescens, the Tyrol knapweed, short-fringed knapweed or Tyrol thistle, is a perennial plant in the genus Centaurea that grows natively in Central and South-eastern Europe (from Southern Germany and Northern Italy to Romania and Bulgaria). It has also been introduced and is now a noxious weed in the Northern United States, Canada, and Southern Australia. [1] It has purple flowers and it flowers in the summer (June to September).
