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