be, arr. leuven, bidens frondosa, ludwigia grandiflora, crassula helmsii, angelica archangelica, lythrum salicaria, echinochloa crus-galli, lycopus europaeus, urtica dioica, symphytum officinale, phalaris arundinacea, persicaria hydropiper, lolium multiflorum, lysimachia vulgaris, phragmites australis, iris pseudacorus, epilobium ciliatum, stachys palustris, calystegia sepium, ranunculus repens, solanum dulcamara, cirsium arvense, galinsoga quadriradiata, lepidium didymum, epilobium hirsutum, galium palustre, glyceria maxima, azolla filiculoides, acorus calamus, filipendula ulmaria, melilotus albus, barbarea stricta, impatiens glandulifera, persicaria amphibia, matricaria discoidea, setaria helvola, rumex hydrolapathum, cardamine pratensis, cyperus eragrostis, ranunculus sceleratus, brassica rapa, poa trivialis, juncus effusus, eupatorium cannabinum, nymphaea marliacea, gnaphalium uliginosum, elodea nuttallii, agrostis stolonifera, rorippa amphibia, myosotis scorpioides, myriophyllum aquaticum