nl, oost-zuid-holland, agrostis stolonifera, holcus lanatus, ranunculus repens, poa trivialis, lolium perenne, glyceria fluitans, rumex acetosa, trifolium repens, persicaria amphibia, phalaris arundinacea, elodea nuttallii, glyceria maxima, alopecurus geniculatus, ranunculus acris, lemna trisulca, stellaria media, spirodela polyrhiza, anthoxanthum odoratum, elymus repens, cerastium holosteoides, cardamine pratensis, juncus effusus, alopecurus pratensis, galium palustre, glechoma hederacea, sparganium erectum, phragmites australis, poa annua, ceratophyllum demersum, ranunculus sceleratus, butomus umbellatus, rorippa amphibia, dactylis glomerata, oenanthe fistulosa, agrostis capillaris, myosotis scorpioides, hydrocharis morsus-ranae, equisetum fluviatile, phleum pratense, ranunculus flammula, juncus articulatus, eleocharis palustris, persicaria hydropiper, poa pratensis, bromus hordeaceus, cirsium arvense, lolium pratense, potamogeton pusillus, urtica dioica, lemna minor