 Paul Bachi University of Kentucky Research and Education Center |
Blisters on the upper leaf surface |
 Paul Bachi University of Kentucky Research and Education Center |
Older area of infection |
 Paul Bachi University of Kentucky Research and Education Center |
urediniospores of Puccinia polysora |
 Paul Bachi University of Kentucky Research and Education Center |
teliospores of Puccinia polysora |