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