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