nl, oost-zuid-holland, agrostis stolonifera, glyceria fluitans, ranunculus repens, elodea nuttallii, trifolium repens, spirodela polyrhiza, glyceria maxima, poa trivialis, alopecurus geniculatus, ranunculus sceleratus, persicaria amphibia, lemna trisulca, sparganium erectum, lolium perenne, butomus umbellatus, eleocharis palustris, ranunculus circinatus, poa annua, potamogeton pusillus, ceratophyllum demersum, equisetum fluviatile, persicaria hydropiper, elymus repens, myosotis scorpioides, phalaris arundinacea, holcus lanatus, stellaria media, sagittaria sagittifolia, potamogeton trichoides, stuckenia pectinata, lemna gibba, rorippa amphibia, bolboschoenus maritimus, phragmites australis, alisma plantago-aquatica, juncus articulatus, lemna minor, ranunculus acris, zannichellia palustris, polygonum aviculare, potamogeton friesii, cirsium arvense, phleum pratense, hydrocharis morsus-ranae, alopecurus pratensis, dactylis glomerata, argentina anserina, cerastium holosteoides, oenanthe fistulosa, nymphoides peltata