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