Maybe? Not thick like a gall. Lots all over the trail
On sticky cinquefoil. Several plants had them. They appeared mostly on the upper surface of the leaf, and yellowed the area
Heavier density than most spruces.
@kemper Some more of the possible O. atriplicis. These were smaller than the other. Host fourwing saltbush.
I'm not sure about the host or the galls. Maybe strawberry, maybe rubus for the host. The galls don't match any I can find for either of those species, it could be mites or fungal
Rust (Pucciniales) on willow/Salix leaves, Hudson River, RIparius, 2022-08-21
On coast live oak
On boxwood
Coast Live Oak
Idyllwild Park. Riverside County, California