text: descurainia sophia, euclidium syriacum, sclerochloa dura, capsella bursa-pastoris, convolvulus arvensis, erodium cicutarium, euphorbia cyparissias, geranium pusillum, hordeum murinum, lamium amplexicaule, lepidium campestre, lepidium draba, lolium perenne, poa annua, polygonum aviculare, portulaca oleracea, setaria pumila, setaria verticillata, sinapis arvensis, sisymbrium loeselii, sisymbrium officinale, xanthium spinosum