be, arr. leuven, bidens frondosa, lycopus europaeus, lythrum salicaria, phragmites australis, urtica dioica, lysimachia vulgaris, ludwigia grandiflora, crassula helmsii, phalaris arundinacea, persicaria hydropiper, galium palustre, iris pseudacorus, ranunculus repens, calystegia sepium, symphytum officinale, solanum dulcamara, glyceria maxima, epilobium ciliatum, juncus effusus, poa trivialis, cirsium arvense, angelica archangelica, stachys palustris, agrostis stolonifera, persicaria amphibia, filipendula ulmaria, cardamine pratensis, epilobium hirsutum, rumex hydrolapathum, carex acuta, echinochloa crus-galli, thalictrum flavum, scutellaria galericulata, alisma plantago-aquatica, rorippa amphibia, myosotis scorpioides, lolium multiflorum, impatiens glandulifera, barbarea stricta, ranunculus sceleratus, azolla filiculoides, holcus lanatus, eupatorium cannabinum, acorus calamus, galium aparine, typha latifolia, sparganium erectum, equisetum palustre, rorippa palustris, elodea nuttallii