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