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