echinochloa crus-galli, bolboschoenus maritimus, rorippa palustris, persicaria amphibia, alisma gramineum, alisma plantago-aquatica, butomus umbellatus, glyceria maxima, gratiola officinalis, inula britannica, jacobaea vulgaris, lythrum virgatum, oenanthe aquatica, persicaria minor, phalaris arundinacea, rumex stenophyllus, schoenoplectiella supina