elodea nuttallii, equisetum fluviatile, spirodela polyrhiza, sparganium erectum, ranunculus circinatus, nuphar lutea, butomus umbellatus, ceratophyllum demersum, chara globularis, glyceria maxima, lemna trisulca, oenanthe fistulosa, potamogeton natans, sagittaria sagittifolia