NORTHERN TOOTH FUNGUS - Shelf fungi on a branch cut scar indicates rot inside the tree, which could make the tree a potential hazard.There is nothing that can be done to cure this except maintain the tree's vigor through good horticultural practices.

 

This web site was created for the Morris Arboretum of the University of Pennsylvania's Plant Clinic.
Created by C. Hetzel and revised by S. Eisenman on 3/7/02..
URL = http://www.upenn.edu/PaFLORA/Plantclinic/ntoothfungi.html