Montane Abies alba forests of inner valleys of the Pyrenees, and of other stations of relative continentality, unfavourable to beech, more acidophilous than those of units G3.111 and G3.112, with Vaccinium myrtillus, Goodyera repens, Galium rotundifolium and a good representation of species of the neutrophilous beech forests, intermediate between this unit and unit G3.13.