be, arr. leuven, quercus robur, sorbus aucuparia, prunus serotina, quercus rubra, lonicera periclymenum, betula pendula, populus canadensis, sambucus nigra, frangula alnus, corylus avellana, urtica dioica, dryopteris dilatata, acer pseudoplatanus, galeopsis tetrahit, holcus lanatus, alnus glutinosa, dryopteris carthusiana, glechoma hederacea, agrostis capillaris, holcus mollis, ranunculus repens, fraxinus excelsior, galium aparine, polygonatum multiflorum, pinus sylvestris, juncus effusus, poa trivialis, betula pubescens, castanea sativa, angelica sylvestris, heracleum sphondylium, crataegus monogyna, prunus avium, amelanchier lamarckii, moehringia trinervia, molinia caerulea, ribes rubrum, athyrium filix-femina, hedera helix, deschampsia flexuosa, teucrium scorodonia, avenella flexuosa, humulus lupulus, prunus padus, alnus incana, geum urbanum, silene dioica, cirsium arvense, arrhenatherum elatius, robinia pseudoacacia