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