be, arr. leuven, quercus robur, urtica dioica, populus canadensis, heracleum sphondylium, arrhenatherum elatius, holcus lanatus, ranunculus repens, galium aparine, poa trivialis, glechoma hederacea, cirsium arvense, alopecurus pratensis, filipendula ulmaria, angelica sylvestris, sambucus nigra, galeopsis tetrahit, alnus glutinosa, symphytum officinale, fraxinus excelsior, prunus serotina, rumex acetosa, phalaris arundinacea, dactylis glomerata, agrostis capillaris, calystegia sepium, ranunculus acris, crataegus monogyna, tanacetum vulgare, quercus rubra, humulus lupulus, anthriscus sylvestris, juncus effusus, holcus mollis, rumex obtusifolius, corylus avellana, stellaria graminea, elymus repens, ficaria verna, geum urbanum, lolium perenne, silene dioica, cardamine pratensis, phragmites australis, ribes rubrum, equisetum arvense, acer pseudoplatanus, lysimachia vulgaris, iris pseudacorus, aegopodium podagraria, betula pendula