diffuse knapweed
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Asterales
- family: Asteraceae
- genus: Centaurea
- species: Centaurea diffusa
Grand Forks
Kamloops
Summerland
Vernon
British Columbia
CanadaStrimonikón
Ápsalos
Central Macedonia
Greece- Luxembourg
Johannedal
VästernorrlandTrollhättan
Västra Götaland
SwedenSioux Center
IowaElk Rapids
MichiganHuron
OhioWoodbridge
VirginiaDallesport
Seattle
Selah
Washington
United States