Images
Healthy and dead, cankered tissue on a peach tree. Healthy tissue on the left with dead, cankered tissue on the
right on a peach tree infected with cytospora.

 
Orange tendrils of spores. Orange tendrils of spores produced by the spore bearing
pycnidia of Cytospora.

 
Embedded pycnidia.

Cytospora producing small (1 mm) pimple-like bumps in which black fungal structures called pycnidia are embedded.

 
Peach branch with a gumming canker.
 Peach branch with a gumming canker and an advancing margin of necrotic tissue. Cytospora causes gumming sunken cankers in many stone fruits such as sweet cherry and peach.

 

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Websites
utah pests homepage Integrated Pest Management Plant Diseases Insects and Their Relatives Utah Plant Pest Diagnostic Lab