| 5379811 |
powdery mildew |
Phyllactinia guttata |
|
| 5366821 |
apple scab |
Venturia inaequalis |
Close-up view of apple scab (Venturia inaequalis) on a crabapple leaf. |
| 5366790 |
Marssonina blight of poplar |
Marssonina populi |
Close-up view of Marssonina blight (Marssonina populi) on an aspen leaf. |
| 5366791 |
Marssonina blight of poplar |
Marssonina populi |
Close-up view of Marssonina blight (Marssonina populi) on an aspen leaf. |
| 5366714 |
Thyronectria canker |
Thyronectria austroamericana |
Close-up view of the signs and symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree. |