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