hordeum murinum, capsella bursa-pastoris, convolvulus arvensis, bromus tectorum, erodium cicutarium, lepidium perfoliatum, matricaria chamomilla, achillea collina, descurainia sophia, geranium pusillum, holosteum umbellatum, lactuca serriola, poa angustifolia, silene latifolia, stellaria media, taraxacum minimum