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