Jostaberry – White Pine Blister Rust
Cronartium ribicola
Jostaberry – White Pine Blister Rust Signs & Symptoms
- Fruiting bodies (uredinia) on leaf
- Uredinia on affected leaf
- Telia on leaf
- Infected leaf top side. Odd line pattern may have other abiotic cause.
- Symptomatic infected leaf underside
Jostaberry – White Pine Blister Rust Pathogen
- Telia and spores on leaf
- Uredinia cross-section
- Base of telia with telial horns emerging
- Spores under microscope