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