be, arr. leuven, populus canadensis, urtica dioica, quercus robur, cirsium arvense, ranunculus repens, glechoma hederacea, holcus lanatus, arrhenatherum elatius, poa trivialis, heracleum sphondylium, galium aparine, symphytum officinale, galeopsis tetrahit, sambucus nigra, angelica sylvestris, alopecurus pratensis, phalaris arundinacea, calystegia sepium, alnus glutinosa, juncus effusus, filipendula ulmaria, agrostis capillaris, phragmites australis, fraxinus excelsior, rumex obtusifolius, prunus serotina, dactylis glomerata, rumex acetosa, tanacetum vulgare, equisetum arvense, ranunculus acris, crataegus monogyna, agrostis stolonifera, quercus rubra, lolium perenne, acer pseudoplatanus, elymus repens, lysimachia vulgaris, humulus lupulus, cirsium palustre, stellaria graminea, lycopus europaeus, cardamine pratensis, lythrum salicaria, geum urbanum, betula pendula, cerastium holosteoides, iris pseudacorus, eupatorium cannabinum, alnus incana