text: triticum aestivum, galium aparine, viola arvensis, apera spica-venti, capsella bursa-pastoris, cirsium arvense, fallopia convolvulus, papaver rhoeas, poa annua, stellaria media, chenopodium album, lamium purpureum, polygonum aviculare, sonchus arvensis, sonchus oleraceus, thlaspi arvense, veronica persica