nl, oost-zuid-holland, agrostis stolonifera, ranunculus repens, persicaria amphibia, glyceria maxima, poa trivialis, trifolium repens, spirodela polyrhiza, glyceria fluitans, holcus lanatus, lolium perenne, elodea nuttallii, phalaris arundinacea, lemna trisulca, elymus repens, ranunculus acris, rumex acetosa, sparganium erectum, ceratophyllum demersum, phragmites australis, dactylis glomerata, alopecurus pratensis, glechoma hederacea, alopecurus geniculatus, myosotis scorpioides, cerastium holosteoides, rorippa amphibia, cardamine pratensis, sagittaria sagittifolia, butomus umbellatus, ranunculus circinatus, poa annua, stellaria media, equisetum fluviatile, phleum pratense, lemna gibba, cirsium arvense, hydrocharis morsus-ranae, poa pratensis, ranunculus sceleratus, bellis perennis, urtica dioica, eleocharis palustris, potamogeton pusillus, argentina anserina, persicaria hydropiper, polygonum aviculare, festuca rubra, plantago lanceolata, galium palustre, stuckenia pectinata