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