be, arr. leuven, quercus robur, populus canadensis, alnus glutinosa, quercus rubra, prunus serotina, sorbus aucuparia, urtica dioica, sambucus nigra, corylus avellana, lonicera periclymenum, fraxinus excelsior, filipendula ulmaria, angelica sylvestris, betula pendula, frangula alnus, ranunculus repens, galium aparine, glechoma hederacea, galeopsis tetrahit, holcus lanatus, acer pseudoplatanus, juncus effusus, poa trivialis, heracleum sphondylium, humulus lupulus, ribes rubrum, athyrium filix-femina, lysimachia vulgaris, polygonatum multiflorum, dryopteris carthusiana, crataegus monogyna, agrostis capillaris, alnus incana, prunus avium, phalaris arundinacea, viburnum opulus, geum urbanum, holcus mollis, prunus padus, cirsium palustre, arrhenatherum elatius, dryopteris dilatata, anemone nemorosa, pinus sylvestris, hedera helix, castanea sativa, ficaria verna, cirsium arvense, moehringia trinervia, iris pseudacorus