nl, utrecht, lolium perenne, ranunculus repens, trifolium repens, agrostis stolonifera, poa trivialis, holcus lanatus, stellaria media, poa annua, elymus repens, dactylis glomerata, rumex acetosa, ranunculus acris, alopecurus geniculatus, cerastium holosteoides, polygonum aviculare, phalaris arundinacea, glyceria fluitans, cirsium arvense, alopecurus pratensis, phleum pratense, poa pratensis, capsella bursa-pastoris, rumex obtusifolius, glechoma hederacea, bromus hordeaceus, bellis perennis, plantago major, persicaria amphibia, cardamine pratensis, persicaria hydropiper, festuca rubra, urtica dioica, glyceria maxima, ranunculus sceleratus, rumex crispus, agrostis capillaris, juncus articulatus, argentina anserina, myosotis scorpioides, plantago lanceolata, ceratophyllum demersum, anthoxanthum odoratum, oenanthe fistulosa, carex hirta, spirodela polyrhiza, trifolium pratense, lemna gibba, sparganium erectum, lemna trisulca, juncus effusus