glyceria fluitans, rorippa amphibia, callitriche obtusangula, spirodela polyrhiza, lemna minor, lemna trisulca, glyceria maxima, ceratophyllum demersum, elodea nuttallii, myosotis scorpioides, oenanthe aquatica, polygonum aviculare, ranunculus sceleratus, gnaphalium uliginosum, veronica catenata