Acidophilous Fagus sylvatica forests of the lesser Hercynian ranges and Lorraine, of the collinar level of the western greater Hercynian ranges, the Jura and the Alpine periphery, of the western sub-Pannonic and the intra-Pannonic hills, not or little accompanied by spontaneous conifers, and generally with an admixture of Quercus petraea, or in some cases Quercus robur, in the canopy.