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