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