A deadly poisonous European plant (Conium maculatum) widely naturalized in North America, having bipinnately compound leaves and compound umbels of small, white flowers. 芹叶钩吻,毒参:一种有致命毒性的欧洲植物(毒参毒参属),在北美洲广泛种植,有二次羽状的复叶和由小白花组成的复合伞状花序
Conium (/koʊˈnaɪ.əm/ or /ˈkoʊniəm/) is a genus of flowering plants in the carrot family Apiaceae which consists of four species accepted by The Plant List. One species, C. maculatum, which is highly poisonous, is native to temperate regions of Europe, North Africa and Western Asia, while the other three are from southern Africa.