Tubercularia canker
Tubercularia ulmea

• Leaves turn yellow, then brown, wilt and hang on the branch
• Cankers are oval to elongate and have dry cracked reddish brown to black bark
• Small pimple like spore producing structures arise from infected bark; may be tan orange or black
• Occurs on winged euonymus (Euonymus alta)
• Common on shrubs that are wounded or stressed
• More information on Tubercularia canker...