be, arr. leuven, quercus robur, lonicera periclymenum, sorbus aucuparia, corylus avellana, quercus rubra, prunus serotina, sambucus nigra, populus canadensis, frangula alnus, betula pendula, acer pseudoplatanus, fraxinus excelsior, alnus glutinosa, polygonatum multiflorum, urtica dioica, castanea sativa, dryopteris carthusiana, dryopteris dilatata, glechoma hederacea, hedera helix, athyrium filix-femina, angelica sylvestris, prunus avium, galeopsis tetrahit, juncus effusus, anemone nemorosa, betula pubescens, ribes rubrum, crataegus monogyna, heracleum sphondylium, viburnum opulus, galium aparine, holcus lanatus, fagus sylvatica, ranunculus repens, holcus mollis, filipendula ulmaria, molinia caerulea, alnus incana, humulus lupulus, moehringia trinervia, geum urbanum, poa trivialis, pinus sylvestris, agrostis capillaris, ficaria verna, teucrium scorodonia, lamium galeobdolon, carpinus betulus, pteridium aquilinum