melilotus albus, ambrosia artemisiifolia, melilotus officinalis, artemisia absinthium, berteroa incana, capsella bursa-pastoris, elymus repens, euphorbia seguieriana, poa angustifolia, ballota nigra, bromus tectorum, cirsium arvense, convolvulus arvensis, echium vulgare, erigeron canadensis, medicago falcata, sisymbrium loeselii, plantago major, seseli annuum, verbascum phoeniceum