argentina anserina, agrostis stolonifera, plantago uliginosa, poa trivialis, alopecurus geniculatus, gnaphalium uliginosum, persicaria maculosa, polygonum aviculare, rorippa palustris, rumex maritimus, sagina procumbens, cirsium arvense, matricaria discoidea, sonchus asper, persicaria amphibia, ranunculus sceleratus