be, arr. leuven, quercus robur, quercus rubra, prunus serotina, sorbus aucuparia, betula pendula, lonicera periclymenum, castanea sativa, frangula alnus, dryopteris dilatata, pinus sylvestris, molinia caerulea, dryopteris carthusiana, avenella flexuosa, deschampsia flexuosa, vaccinium myrtillus, fagus sylvatica, betula pubescens, carex pilulifera, calluna vulgaris, acer pseudoplatanus, teucrium scorodonia, corylus avellana, agrostis capillaris, amelanchier lamarckii, pinus nigra, pteridium aquilinum, ilex aquifolium, juncus effusus, sambucus nigra, holcus mollis, holcus lanatus, hedera helix, athyrium filix-femina, polygonatum multiflorum, pseudotsuga menziesii, urtica dioica, alnus glutinosa, robinia pseudoacacia, convallaria majalis, salix caprea, larix kaempferi, cytisus scoparius, galeopsis tetrahit, rumex angiocarpus, prunus avium, populus tremula, rumex acetosella, luzula pilosa, moehringia trinervia, juncus conglomeratus