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