Galls, Diseases, and Pests - Oak Leaf Blister
Taphrina caerulescens
This is a Blue Oak leaf. The blisters are mostly round.
|
The reverse side of the same Blue Oak leaf.
|
On Coast Live Oak leaves, the blisters are much more raised, often more colorful, and usually have more obvious fungal patches.
|
I finally found blisters on Coast Live Oak that look more like the ones on Blue Oaks.
|