1. Acidophilous oak-dominated woodland Forests of [Quercus robur] or [Quercus 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