polycarpon tetraphyllum, sagina apetala, poa annua, capsella rubella, cerastium glomeratum, chenopodiastrum murale, crepis bursifolia, crepis zacintha, erigeron sumatrensis, hordeum murinum, hypochaeris radicata, medicago lupulina, plantago major, silene latifolia, stellaria media, veronica arvensis