be, arr. leuven, quercus robur, prunus serotina, quercus rubra, sorbus aucuparia, frangula alnus, betula pendula, lonicera periclymenum, agrostis capillaris, pinus sylvestris, amelanchier lamarckii, molinia caerulea, holcus lanatus, holcus mollis, avenella flexuosa, sambucus nigra, deschampsia flexuosa, dryopteris carthusiana, castanea sativa, dryopteris dilatata, corylus avellana, juncus effusus, populus canadensis, galeopsis tetrahit, alnus glutinosa, urtica dioica, betula pubescens, calluna vulgaris, vaccinium myrtillus, arrhenatherum elatius, acer pseudoplatanus, robinia pseudoacacia, ranunculus repens, polygonatum multiflorum, teucrium scorodonia, rumex angiocarpus, prunus avium, pteridium aquilinum, cytisus scoparius, galium aparine, carex pilulifera, poa trivialis, rumex acetosella, rumex acetosa, athyrium filix-femina, lysimachia vulgaris, cirsium arvense, fraxinus excelsior, salix caprea, anthoxanthum odoratum, populus tremula