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