hordeum murinum, anacyclus clavatus, bromus madritensis, malva sylvestris, plantago coronopus, atriplex prostrata, bromus hordeaceus, capsella rubella, catapodium rigidum, cynodon dactylon, erigeron bonariensis, helminthotheca echioides, lepidium draba, lotus corniculatus, poa trivialis, polygonum aviculare, rostraria cristata, rubus ulmifolius, senecio vulgaris, sonchus oleraceus, spergularia diandra, spergularia rubra, xanthium spinosum