polycarpon tetraphyllum, oxalis corniculata, sagina apetala, symphyotrichum squamatum, clinopodium nepeta, erigeron sumatrensis, helminthotheca echioides, lolium perenne, picris hieracioides, plantago coronopus, plantago lanceolata, plantago major, poa annua, rostraria cristata, sinapis arvensis, sonchus asper, torilis nodosa, trifolium repens, verbascum sinuatum