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