nl, utrecht, lolium perenne, agrostis stolonifera, ranunculus repens, trifolium repens, poa trivialis, alopecurus geniculatus, holcus lanatus, elymus repens, stellaria media, poa annua, rumex acetosa, ranunculus acris, glyceria fluitans, cerastium holosteoides, cardamine pratensis, alopecurus pratensis, ranunculus sceleratus, phleum pratense, dactylis glomerata, poa pratensis, phalaris arundinacea, persicaria amphibia, polygonum aviculare, bellis perennis, bromus hordeaceus, eleocharis palustris, cirsium arvense, capsella bursa-pastoris, plantago major, argentina anserina, glyceria maxima, persicaria hydropiper, juncus articulatus, anthoxanthum odoratum, glechoma hederacea, lolium pratense, agrostis capillaris, rumex crispus, festuca rubra, myosotis scorpioides, scorzoneroides autumnalis, oenanthe fistulosa, rumex obtusifolius, spirodela polyrhiza, lemna trisulca, bolboschoenus maritimus, butomus umbellatus, triglochin palustris, carex hirta, elodea nuttallii