ballota nigra, carduus acanthoides, conium maculatum, elymus repens, ambrosia artemisiifolia, convolvulus arvensis, erigeron annuus, hordeum murinum, polygonum aviculare, sonchus arvensis, capsella bursa-pastoris, erigeron canadensis, lactuca serriola, raphanus raphanistrum, tragopogon dubius, ulmus minor