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