be, arr. leuven, quercus robur, populus canadensis, urtica dioica, arrhenatherum elatius, heracleum sphondylium, cirsium arvense, glechoma hederacea, ranunculus repens, holcus lanatus, galeopsis tetrahit, angelica sylvestris, galium aparine, filipendula ulmaria, poa trivialis, alopecurus pratensis, agrostis capillaris, symphytum officinale, alnus glutinosa, sambucus nigra, rumex acetosa, crataegus monogyna, phalaris arundinacea, calystegia sepium, tanacetum vulgare, ranunculus acris, fraxinus excelsior, juncus effusus, dactylis glomerata, stellaria graminea, prunus serotina, betula pendula, elymus repens, phragmites australis, cirsium palustre, cardamine pratensis, lolium perenne, vicia cracca, achillea millefolium, geum urbanum, equisetum arvense, anthriscus sylvestris, plantago lanceolata, cerastium holosteoides, hypericum perforatum, corylus avellana, festuca rubra, lysimachia vulgaris, humulus lupulus, rumex obtusifolius, holcus mollis