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