tribulus terrestris, capsella bursa-pastoris, convolvulus arvensis, delphinium hispanicum, echium vulgare, matricaria chamomilla, portulaca oleracea, tripleurospermum inodorum, amaranthus albus, bromus tectorum, centaurea cyanus, chenopodium album, hordeum murinum, lactuca serriola, lepidium draba, polygonum aviculare, salsola tragus, secale cereale