be, arr. leuven, quercus robur, populus canadensis, prunus serotina, alnus glutinosa, corylus avellana, quercus rubra, sorbus aucuparia, urtica dioica, angelica sylvestris, fraxinus excelsior, lonicera periclymenum, betula pendula, sambucus nigra, filipendula ulmaria, glechoma hederacea, juncus effusus, ranunculus repens, holcus lanatus, heracleum sphondylium, frangula alnus, galeopsis tetrahit, acer pseudoplatanus, ribes rubrum, poa trivialis, cirsium palustre, galium aparine, crataegus monogyna, agrostis capillaris, arrhenatherum elatius, cardamine pratensis, anemone nemorosa, lysimachia vulgaris, viburnum opulus, athyrium filix-femina, symphytum officinale, cirsium arvense, dryopteris carthusiana, alnus incana, ficaria verna, polygonatum multiflorum, geum urbanum, molinia caerulea, humulus lupulus, phragmites australis, prunus avium, castanea sativa, alopecurus pratensis, hedera helix, salix caprea, lythrum salicaria