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Below are pictures of aspects and symptoms of sweet chestnut blight, caused by the fungus Cryphonectria parasitica.

C. parasitica fruiting bodies close-up D Rigling.jpg

A close-up view of the fruiting bodies of Cryphonectria parasitica (above). Picture: T. Kirisits

Sweet chestnut dieback caused by Cryphonectria parasitica D Rigling.jpg

A European sweet chestnut tree (Castanea sativa) with dieback caused by sweet chestnut blight. Picture: T. Kirisits

C. parasitica hypovirulent canker cropped D Rigling.jpg

A canker on a sweet chestnut tree caused by a hypovirulent strain of Cryphonectria parasitica. See ‘Long-term prospects’ on the sweet chestnut blight main information page for more information about hypovirulence. Picture: T. Kirisits

C. parasitica canker cropped D. Riglingjpg.jpg

A canker caused by sweet chestnut blight. Picture: T. Kirisits

C. parasitica lesion on cut SC branch cropped D Rigling.jpg

A C. parasitica lesion on a cut branch of sweet chestnut. Picture: D. Rigling

Sporulation of C parasitica in sweet chestnut bark cracks cropped D Rigling.jpg

C. parasitica sporulation in sweet chestnut bark cracks and fissures. Picture: D. Rigling

Young C. parasitica lesion cropped D. Rigling.jpg

A young C. parasitica lesion. Picture: D. Rigling

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