nl, oost-zuid-holland, spirodela polyrhiza, elodea nuttallii, lemna trisulca, glyceria maxima, ranunculus circinatus, sparganium erectum, agrostis stolonifera, glyceria fluitans, sagittaria sagittifolia, butomus umbellatus, rorippa amphibia, potamogeton pusillus, ceratophyllum demersum, persicaria amphibia, myosotis scorpioides, hydrocharis morsus-ranae, equisetum fluviatile, ranunculus sceleratus, elodea canadensis, ranunculus repens, potamogeton trichoides, phalaris arundinacea, eleocharis palustris, lemna gibba, lemna minor, persicaria hydropiper, poa trivialis, oenanthe aquatica, nuphar lutea, nymphoides peltata, potamogeton natans, alisma plantago-aquatica, alopecurus geniculatus, potamogeton friesii, trifolium repens, oenanthe fistulosa, stuckenia pectinata, wolffia arrhiza, galium palustre, juncus articulatus, myriophyllum spicatum, phragmites australis, holcus lanatus, stratiotes aloides, berula erecta, lolium perenne, sparganium emersum, elymus repens, stellaria media, poa annua