text: lysimachia arvensis, sinapis arvensis, avena fatua, bifora radians, convolvulus arvensis, euphorbia exigua, euphorbia helioscopia, valerianella locusta, chenopodium album, cirsium arvense, elymus repens, persicaria maculosa, polygonum aviculare, vicia tetrasperma, viola arvensis, silene latifolia, sonchus asper