Puccinia acroptili (Syd.)

Plant species attacked: Russian knapweed
Biocontrol Agent Type: Leaf and stem rust (fungus)
Country of Origin: The populations released in BC orginated in south-central Asia
First Released in BC: Adventive
Click on image to view larger photo: Puccinia acroptili rust pustules on knapweed
 
Positive monitoring and/or dispersal locations in BC on Russian knapweed:
(click image to view larger map)
Established Puccinia acroptili on Russian knapweed locations
 
View the in-depth Puccinia acroptili information page here