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