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