glyceria maxima, elodea nuttallii, persicaria hydropiper, spirodela polyrhiza, equisetum fluviatile, phalaris arundinacea, alisma plantago-aquatica, epilobium parviflorum, hydrocharis morsus-ranae, persicaria amphibia, ranunculus repens, sagittaria sagittifolia, sparganium erectum