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