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