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