be, arr. leuven, quercus robur, prunus serotina, quercus rubra, sorbus aucuparia, betula pendula, pinus sylvestris, frangula alnus, lonicera periclymenum, molinia caerulea, dryopteris dilatata, amelanchier lamarckii, deschampsia flexuosa, avenella flexuosa, dryopteris carthusiana, castanea sativa, agrostis capillaris, betula pubescens, calluna vulgaris, vaccinium myrtillus, juncus effusus, carex pilulifera, holcus lanatus, fagus sylvatica, acer pseudoplatanus, sambucus nigra, holcus mollis, pinus nigra, teucrium scorodonia, rumex angiocarpus, urtica dioica, corylus avellana, rhododendron ponticum, juncus tenuis, galeopsis tetrahit, alnus glutinosa, ilex aquifolium, rumex acetosella, pteridium aquilinum, robinia pseudoacacia, larix kaempferi, potentilla indica, athyrium filix-femina, geum macrophyllum, pseudotsuga menziesii, salix caprea, ranunculus repens, populus canadensis, polygonatum multiflorum, ceratocapnos claviculata, lysimachia vulgaris