poa trivialis, glyceria fluitans, agrostis stolonifera, alopecurus geniculatus, holcus lanatus, bidens cernuus, glyceria maxima, juncus articulatus, juncus effusus, leptobryum pyriforme, myosotis scorpioides, oenanthe fistulosa, persicaria hydropiper, pseudephemerum nitidum, ranunculus repens, rorippa amphibia, spirodela polyrhiza, stellaria alsine, stellaria media, oenanthe aquatica, rorippa sylvestris, rumex palustris