catapodium rigidum, erigeron sumatrensis, arenaria leptoclados, sonchus asper, achyrophorus valdesii, bromus madritensis, cardamine hirsuta, cerastium ligusticum, convolvulus arvensis, daucus carota, picris hieracioides, poa annua, reichardia picroides, symphyotrichum squamatum, veronica arvensis