Forests of Quercus robur or Q. petraea on acid soils with an herb layer mostly constituted by the ecological groups of Deschampsia flexuosa, Vaccinium myrtillus, Pteridium aquilinum, Lonicera periclymenum, Holcus mollis, and of Maianthemum bifolium, Convallaria majalis, Hieracium sabaudum, Hypericum pulchrum, Luzula pilosa, and the mosses Polytrichum formosum and Leucobryum glaucum.
Silicicolous thermocline forests of Quercus petraea, Q. robur, Sorbus torminalis, S. domestica, Pyrus communis, Malus acerba, Ilex aquifolium, Mespilus germanica with an undergrowth of Ruscus aculeatus, Festuca heterophylla, Pulmonaria longifolia, Melica uniflora and the Deschampsia flexuosa and Convallaria majalis groups of the Quercion.