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