be, arr. leuven, quercus robur, quercus rubra, prunus serotina, betula pendula, frangula alnus, sorbus aucuparia, agrostis capillaris, pinus sylvestris, holcus lanatus, lonicera periclymenum, urtica dioica, holcus mollis, ranunculus repens, juncus effusus, molinia caerulea, avenella flexuosa, deschampsia flexuosa, galeopsis tetrahit, amelanchier lamarckii, sambucus nigra, alnus glutinosa, dryopteris carthusiana, arrhenatherum elatius, dryopteris dilatata, corylus avellana, rumex angiocarpus, betula pubescens, castanea sativa, calluna vulgaris, rumex acetosa, poa trivialis, galium aparine, rumex acetosella, glechoma hederacea, populus canadensis, cirsium arvense, tanacetum vulgare, lysimachia vulgaris, hypericum perforatum, heracleum sphondylium, robinia pseudoacacia, vaccinium myrtillus, teucrium scorodonia, anthoxanthum odoratum, acer pseudoplatanus, achillea millefolium, dactylis glomerata, angelica sylvestris, juncus tenuis, fraxinus excelsior