helosciadium nodiflorum, nasturtium officinale, oenanthe crocata, veronica anagallis-aquatica, cyperus longus, glyceria declinata, lemna minor, polypogon maritimus, polypogon viridis, scirpoides holoschoenus, mentha suaveolens, poa trivialis, ranunculus peltatus, rumex pulcher