Treesearch

American beech (Fagus grandifolia Ehrh.) is an aesthetically, ecologically, and economically important native component of the North American eastern hardwood forest. American beech is susceptible to beech bark disease (BBD), however, and has suffered high rates of mortality as the disease complex spreads. The invasive sap-feeding woolly beech scale insect (Cryptococcus fagisuga) is the pre-disposing factor for infection by introducing either Neonectria faginata or N. ditissima fungus species that result in extensive cankering of American Beech trees. A small percentage of trees survive...