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