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