be, arr. leuven, quercus robur, quercus rubra, betula pendula, prunus serotina, acer pseudoplatanus, castanea sativa, sorbus aucuparia, urtica dioica, pinus sylvestris, lonicera periclymenum, teucrium scorodonia, fagus sylvatica, agrostis capillaris, holcus lanatus, juncus effusus, corylus avellana, salix caprea, glechoma hederacea, ranunculus repens, fraxinus excelsior, dryopteris carthusiana, cirsium arvense, sambucus nigra, pteridium aquilinum, frangula alnus, dryopteris dilatata, athyrium filix-femina, juncus conglomeratus, holcus mollis, carex pilulifera, galeopsis tetrahit, eupatorium cannabinum, molinia caerulea, avenella flexuosa, alnus glutinosa, hypericum perforatum, geum urbanum, prunus avium, poa trivialis, hedera helix, populus canadensis, deschampsia flexuosa, juncus tenuis, scrophularia nodosa, calamagrostis epigejos, moehringia trinervia, carpinus betulus, crataegus monogyna, heracleum sphondylium, robinia pseudoacacia