be, arr. leuven, quercus robur, urtica dioica, ranunculus repens, populus canadensis, holcus lanatus, alnus glutinosa, poa trivialis, angelica sylvestris, galium aparine, juncus effusus, prunus serotina, galeopsis tetrahit, sambucus nigra, heracleum sphondylium, glechoma hederacea, sorbus aucuparia, filipendula ulmaria, lonicera periclymenum, quercus rubra, corylus avellana, agrostis capillaris, cirsium palustre, cardamine pratensis, fraxinus excelsior, alopecurus pratensis, arrhenatherum elatius, holcus mollis, humulus lupulus, frangula alnus, cirsium arvense, phalaris arundinacea, betula pendula, rumex acetosa, rumex obtusifolius, lysimachia vulgaris, ranunculus acris, crataegus monogyna, silene dioica, agrostis stolonifera, dryopteris carthusiana, athyrium filix-femina, ribes rubrum, symphytum officinale, dryopteris dilatata, geum urbanum, dactylis glomerata, iris pseudacorus, acer pseudoplatanus, viburnum opulus, lythrum salicaria