malva pusilla, amaranthus retroflexus, anthemis cotula, bryum argenteum, herniaria glabra, lolium perenne, matricaria discoidea, persicaria maculosa, plantago lanceolata, poa annua, urtica urens, achillea millefolium, argentina anserina, artemisia campestris, capsella bursa-pastoris, ceratodon purpureus, descurainia sophia, erigeron canadensis, galinsoga parviflora, persicaria amphibia, plantago major, stellaria media, trifolium repens, tripleurospermum inodorum, echinochloa crus-galli, rumex acetosella