agrostis stolonifera, glyceria fluitans, holcus lanatus, poa trivialis, ranunculus sceleratus, glyceria maxima, juncus articulatus, physcomitrium pyriforme, cardamine pratensis, carex hirta, juncus effusus, ranunculus repens, spirodela polyrhiza, trifolium repens, bidens cernuus, persicaria hydropiper, persicaria maculosa, stellaria alsine