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