eleocharis uniglumis, argentina anserina, persicaria maculosa, alopecurus geniculatus, carex nigra, juncus articulatus, juncus bufonius, bidens tripartita, leptodictyum riparium, plantago major, plantago media, poa pratensis, poa trivialis, ranunculus flammula, rorippa palustris, rumex crispus, sagina procumbens