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