viola arvensis, matricaria chamomilla, descurainia sophia, brassica napus, bromus tectorum, capsella bursa-pastoris, elymus repens, geranium pusillum, lycopsis arvensis, matricaria discoidea, myosotis arvensis, papaver rhoeas, secale cereale, thlaspi arvense, veronica persica, artemisia vulgaris, bryum argenteum, lactuca serriola, silene latifolia, urtica dioica