Beech the beech tree has such delicate bark, carvings, such as lovers' initials and other forms of graffiti, remain because the tree is unable to heal itself. Beech bark disease is a fungal infection that attacks the American beech through damage caused by scale insects. Infection can lead to the death of the tree. Beech was a late entrant to Great Britain after the last glaciation, and may have been restricted to basic soils in the south of England. Some suggest that it was introduced by Neolithic tribes who planted the trees for their edible nuts. The beech is classified as
Beech bark disease second type of scale insect, "Xylococcus betulae", which is non-host-specific, is native to North America and causes beech bark disease to a lesser degree than "Cryptococcus fagisuga". There are two fungi common to North America that are important to the beech bark disease process. They are "Neonectria faginata" and "Neonectria ditissima". The primary fungus is "N. faginata", though "N. ditissima" is very important in some areas. These fungi infect the tree through the wounds caused by the beech scale insect and then begin to produce spores. Spores are contained in perithecia, which are red, lemon-shaped fruiting bodies that form in