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