text: apera spica-venti, poa annua, capsella bursa-pastoris, centaurea cyanus, matricaria discoidea, myosotis arvensis, polygonum aviculare, tripleurospermum inodorum, papaver rhoeas, persicaria hydropiper, persicaria maculosa, stellaria media, aphanes arvensis, cirsium arvense, equisetum arvense, fallopia convolvulus, gnaphalium uliginosum, juncus bufonius, matricaria chamomilla, plantago uliginosa, viola arvensis, avena fatua, lamium amplexicaule, rumex crispus, sagina procumbens, scleranthus annuus, veronica persica, chenopodium album, oxyrrhynchium schleicheri