brassica napus, thlaspi arvense, papaver rhoeas, stellaria media, veronica persica, arabidopsis thaliana, draba verna, elymus repens, euphorbia helioscopia, galium aparine, tripleurospermum inodorum, veronica hederifolia, vicia cracca, aethusa cynapium, artemisia vulgaris, capsella bursa-pastoris, geranium pusillum, lamium purpureum, myosotis arvensis, sinapis arvensis, sonchus asper, symphytum officinale, tanacetum vulgare