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