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