hordeum murinum, avena sterilis, medicago orbicularis, rostraria cristata, ballota nigra, bromus sterilis, carduus pycnocephalus, convolvulus arvensis, dactylis glomerata, echium plantagineum, geranium purpureum, lactuca serriola, papaver rhoeas, plumbago europaea, polycarpon tetraphyllum, silene latifolia, sonchus asper