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