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Home → Publications → American Chestnut Proceedings → 1981 → Etiology of Endothia parasitica on Scarlet Oak

Etiology of Endothia parasitica on Scarlet Oak

In August 1963, a swollen butt condition of scarlet oak with multiple cankers was first noted on the James River and Warm Springs Ranger Districts of the George Washington National Forest. Swollen butt taper showed a diameter ratio of 2.2 basally to a height of 2.65 feet, as compared to 1.3 to 0.65 feet for healthy trees. Isolations from bright orange fans associated with inner bark necrosis yielded an Endothia-like fungus, tentatively identified as Endothia parasitica.


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Author(s): William J. Stambaugh

Publication: American Chestnut Proceedings - 1981