echinochloa crus-galli, eleocharis palustris, paspalum distichum, persicaria amphibia, veronica anagallis-aquatica, cyperus eragrostis, iris pseudacorus, juncus effusus, mentha aquatica, phragmites australis, arctium lappa, cyperus longus, juncus articulatus, lycopus europaeus, lythrum salicaria, salix purpurea