text: hippuris vulgaris, alisma plantago-aquatica, butomus umbellatus, eleocharis palustris, hottonia palustris, nasturtium officinale, sparganium erectum, glyceria fluitans, oenanthe fistulosa, phragmites australis, rumex hydrolapathum, schoenoplectus tabernaemontani, veronica beccabunga