Wikipedia
Bark canker
Neonectria coccinea

Bark canker (Neonectria coccinea) is a fungal pathogen. It was first detected in West Virginia in 1981.

The variant Nectria coccinea var. faginata causes beech bark disease, and can infect the tree via the feeding holes made by the beech scale insect Cryptococcus fagisuga. .
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