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