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