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