text: arabidopsis thaliana, veronica arvensis, apera spica-venti, capsella bursa-pastoris, cirsium arvense, elymus repens, erodium cicutarium, galium aparine, lamium purpureum, matricaria discoidea, plantago uliginosa, poa annua, rumex crispus, sagina procumbens, viola arvensis, artemisia vulgaris, atriplex patula, myosotis arvensis, thlaspi arvense, tripleurospermum inodorum