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