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