hordeum murinum, achillea setacea, arctium lappa, atriplex tatarica, bromus tectorum, carduus acanthoides, chenopodium album, elymus repens, erodium cicutarium, lactuca serriola, lappula squarrosa, lepidium ruderale, polygonum aviculare, sisymbrium loeselii, xanthium strumarium