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