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