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