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