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