hordeum vulgare, papaver rhoeas, conringia orientalis, convolvulus arvensis, arrhenatherum elatius, atriplex patula, capsella bursa-pastoris, caucalis platycarpos, centaurea cyanus, chenopodium album, galium tricornutum, lamium hybridum, medicago lupulina, medicago sativa, polygonum aviculare, thlaspi arvense, veronica polita