Woods and thickets dominated by Betula pendula, Betula pubescens, their allies, or other arborescent Betula spp., on non-marshy terrain. Molinia arundinacea may dominate.
Betula pendula formations of the upper montane level of Corsica, forming extensive subclimax belts on rocky, rapidly eroding soils at the upper forest limit, as well as transition communities in the evolution of laricio pine or beech forests.