be, arr. leuven, populus canadensis, urtica dioica, filipendula ulmaria, galium aparine, heracleum sphondylium, symphytum officinale, angelica sylvestris, glechoma hederacea, quercus robur, galeopsis tetrahit, alnus glutinosa, phalaris arundinacea, poa trivialis, sambucus nigra, alopecurus pratensis, humulus lupulus, ranunculus repens, calystegia sepium, cirsium arvense, arrhenatherum elatius, fraxinus excelsior, holcus lanatus, ribes rubrum, phragmites australis, crataegus monogyna, iris pseudacorus, ficaria verna, silene dioica, lythrum salicaria, anthriscus sylvestris, solanum dulcamara, geum urbanum, cirsium palustre, juncus effusus, carex acuta, rumex obtusifolius, lysimachia vulgaris, impatiens glandulifera, lycopus europaeus, viburnum opulus, corylus avellana, cardamine pratensis, prunus serotina, aegopodium podagraria, alnus incana, dactylis glomerata, rumex acetosa, prunus padus, ranunculus acris, rubus caesius