text: apera spica-venti, fallopia convolvulus, polygonum aviculare, viola arvensis, agrostis stolonifera, chenopodium album, gnaphalium uliginosum, juncus bufonius, persicaria maculosa, capsella bursa-pastoris, draba verna, galeopsis tetrahit, lamium amplexicaule, poa annua, scleranthus annuus, solanum nigrum, spergula arvensis