P. alni basal canker on European Alder

P. alni basal canker on European Alder (Alnus glutinosa)

Related Species: 

alni

Photographer: 

Andrej Kunca, National Forest Centre - Slovakia, Bugwood.org

Disease Symptoms: 

All disease symptoms

Canker

Host Genus: 

Alnus

Scale: 

Whole tree