be, arr. tongeren, quercus rubra, quercus robur, prunus serotina, pinus sylvestris, castanea sativa, sorbus aucuparia, frangula alnus, betula pendula, molinia caerulea, lonicera periclymenum, avenella flexuosa, deschampsia flexuosa, vaccinium myrtillus, betula pubescens, dryopteris dilatata, amelanchier lamarckii, fagus sylvatica, dryopteris carthusiana, calluna vulgaris, rhododendron ponticum, pteridium aquilinum, ilex aquifolium, ceratocapnos claviculata, carex pilulifera, teucrium scorodonia, pseudotsuga menziesii, juncus effusus, pinus nigra, agrostis capillaris, corylus avellana, erica tetralix, pinus pinaster, plantago subulata, hedera helix, holcus mollis, larix kaempferi, juncus tenuis, pinus strobus, robinia pseudoacacia, acer pseudoplatanus, quercus petraea, populus tremula, geum macrophyllum, alnus glutinosa, athyrium filix-femina, lysimachia vulgaris, picea abies, polygonatum multiflorum, holcus lanatus, bidens frondosa