be, arr. leuven, urtica dioica, bidens frondosa, symphytum officinale, phragmites australis, calystegia sepium, angelica archangelica, cirsium arvense, phalaris arundinacea, impatiens glandulifera, ranunculus repens, poa trivialis, heracleum sphondylium, epilobium hirsutum, galium aparine, lythrum salicaria, lycopus europaeus, glechoma hederacea, solanum dulcamara, stachys palustris, arrhenatherum elatius, iris pseudacorus, persicaria hydropiper, agrostis stolonifera, rumex obtusifolius, persicaria amphibia, populus canadensis, lolium multiflorum, crassula helmsii, lysimachia vulgaris, glyceria maxima, eupatorium cannabinum, filipendula ulmaria, thalictrum flavum, salix alba, holcus lanatus, anthriscus sylvestris, hydrocotyle ranunculoides, salix viminalis, solidago gigantea, heracleum mantegazzianum, alopecurus pratensis, humulus lupulus, tanacetum vulgare, elymus repens, ludwigia grandiflora, rumex crispus, brassica rapa, galeopsis tetrahit, echinochloa crus-galli, dactylis glomerata