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