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