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