echinochloa crus-galli, agrostis stolonifera, alisma plantago-aquatica, bidens tripartita, butomus umbellatus, lythrum virgatum, oenanthe aquatica, persicaria amphibia, persicaria hydropiper, persicaria minor, phalaris arundinacea, rorippa palustris, stachys palustris, xanthium strumarium