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