Conium maculatum

C. maculatum is an herbaceous biennial and highly toxic plant, native across northern Europe, western Asia and North Africa. It has been introduced widely outside its native area to many parts of America, southern Africa, China, New Zealand and Australia. C. maculatum is a twofold invader, competing with pasture and crops and encroaching on native vegetation, while also posing a serious health hazard to virtually all livestock, and humans. Even within its native range, C. maculatum is increasing and tending to occur more commonly in crops.