argentina anserina, barbula unguiculata, hordeum murinum, amaranthus retroflexus, atriplex patula, campylium chrysophyllum, capsella bursa-pastoris, chenopodium album, descurainia sophia, malva neglecta, poa annua, polygonum aviculare, scorzoneroides autumnalis, sisymbrium officinale, trifolium repens