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