be, arr. leuven, populus canadensis, urtica dioica, filipendula ulmaria, angelica sylvestris, heracleum sphondylium, symphytum officinale, quercus robur, glechoma hederacea, galium aparine, galeopsis tetrahit, alnus glutinosa, phalaris arundinacea, ranunculus repens, sambucus nigra, poa trivialis, cirsium arvense, calystegia sepium, humulus lupulus, alopecurus pratensis, fraxinus excelsior, arrhenatherum elatius, holcus lanatus, cirsium palustre, phragmites australis, iris pseudacorus, juncus effusus, ribes rubrum, lythrum salicaria, solanum dulcamara, lycopus europaeus, crataegus monogyna, cardamine pratensis, carex acuta, silene dioica, lysimachia vulgaris, ficaria verna, geum urbanum, corylus avellana, rumex obtusifolius, viburnum opulus, persicaria hydropiper, alnus incana, valeriana excelsa, epilobium hirsutum, ranunculus acris, acer pseudoplatanus, prunus serotina, anthriscus sylvestris, eupatorium cannabinum, athyrium filix-femina