be, arr. leuven, quercus robur, prunus serotina, quercus rubra, sorbus aucuparia, frangula alnus, betula pendula, lonicera periclymenum, pinus sylvestris, agrostis capillaris, dryopteris carthusiana, amelanchier lamarckii, dryopteris dilatata, molinia caerulea, holcus lanatus, corylus avellana, sambucus nigra, alnus glutinosa, galeopsis tetrahit, urtica dioica, holcus mollis, betula pubescens, avenella flexuosa, juncus effusus, deschampsia flexuosa, castanea sativa, populus canadensis, ranunculus repens, vaccinium myrtillus, galium aparine, acer pseudoplatanus, polygonatum multiflorum, glechoma hederacea, teucrium scorodonia, athyrium filix-femina, lysimachia vulgaris, fraxinus excelsior, calluna vulgaris, poa trivialis, fagus sylvatica, robinia pseudoacacia, pteridium aquilinum, arrhenatherum elatius, populus tremula, angelica sylvestris, moehringia trinervia, prunus padus, prunus avium, crataegus monogyna, hedera helix, salix caprea