spirodela polyrhiza, ceratophyllum demersum, lemna gibba, lemna trisulca, ranunculus circinatus, stuckenia pectinata, agrostis stolonifera, myosotis scorpioides, ranunculus repens, rorippa amphibia, bolboschoenus maritimus, butomus umbellatus, potamogeton crispus, sparganium erectum