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