Native To: Unknown; both the fungus, Nectria coccinea var. faginata, and the insect vector, Cryptococcus fagisuga, are believed to be of exotic origin, but their original native ranges have not been verified (Gwiazdowski et al. 2006) (Houston 1994)
Date of U.S. Introduction:
Introduced to Canada during the late 1800s, first appeared in the U.S. during the 1930s (McCullough et al. 2005)
Images: Invasive.org and Google
Video:
About.com - What Is Beech Bark Disease? (or click Play button below)
Means of Introduction: Introduced accidentally on imported European beech saplings (McCullough et al. 2005)
Impact: Fungal disease that kills American beech trees after being attacked by the beech scale insect (Cryptococcus fagisuga) (McCullough et al. 2005)
Current U.S. Distribution:
Northeastern U.S. and Great Lakes Region
Management Plans: Microbes
Selected Internet Resources:
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