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