lemna minor, berula erecta, spirodela polyrhiza, sagittaria sagittifolia, sparganium erectum, eleocharis palustris, potamogeton pusillus, agrostis stolonifera, butomus umbellatus, phragmites australis, alisma plantago-aquatica, glyceria maxima, myosotis scorpioides, persicaria hydropiper, ranunculus circinatus