text: erigeron canadensis, bromus tectorum, bromus japonicus, capsella bursa-pastoris, carduus acanthoides, cirsium arvense, convolvulus arvensis, crepis foetida, crepis tectorum, cyclachaena xanthiifolia, descurainia sophia, echinochloa crus-galli, lactuca serriola, lappula squarrosa, lathyrus tuberosus, lolium perenne, rubus caesius, senecio vernalis, setaria pumila, thlaspi arvense, vicia cracca, xanthium orientale