Symptoms and Signs on Ribes

Rusts

White Pine Blister Rust - Symptoms and Signs on Ribes

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Ribes leaves infected with Cronartium ribicola.

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Uredinia produced on the lower surface of infected leaves.

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Microscopic view of urediniospores. Note spiny appearance.

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Teila forming on leaf. Some uredinia can also be seen in the center of the photo.

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Telia viewed with a hand lens on leaf surface. Basidiospores will be produced from the teliospores.