be, arr. leuven, populus canadensis, quercus robur, sambucus nigra, corylus avellana, fraxinus excelsior, prunus serotina, quercus rubra, urtica dioica, glechoma hederacea, alnus glutinosa, acer pseudoplatanus, sorbus aucuparia, lonicera periclymenum, ribes rubrum, heracleum sphondylium, crataegus monogyna, angelica sylvestris, galium aparine, filipendula ulmaria, polygonatum multiflorum, ficaria verna, poa trivialis, prunus avium, galeopsis tetrahit, geum urbanum, alnus incana, humulus lupulus, betula pendula, hedera helix, ranunculus repens, viburnum opulus, frangula alnus, anemone nemorosa, holcus lanatus, athyrium filix-femina, silene dioica, castanea sativa, symphytum officinale, adoxa moschatellina, dryopteris carthusiana, juncus effusus, arrhenatherum elatius, moehringia trinervia, robinia pseudoacacia, cardamine pratensis, primula elatior, galanthus nivalis, dryopteris dilatata, holcus mollis, prunus padus