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