Gall Rusts


Pine-Pine Gall Rust - Peridermium (Endocronartium)harknessii

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Mutiple galls on pine.

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Spores produced on galls look like aeciospores but directly infect pines.

Pine-Oak Gall Rust - Cronartium quercuum f.sp. banksiana

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Pine seedling with young gall producing pycnia.

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Gall producing aeciospores.

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Uredinia producing on the lower surface of red oak (the alternate host) leaves.

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Telia on lower surface of red oak leaves.