Answer:
Conium maculatum or Poison Hemlock
Explanation:
According to my research on different types of plants, I can say that based on the information provided within the question the plant that fits this description perfectly is called the Conium maculatum or Poison Hemlock. Like mentioned in the question this is a highly poisonous plant that is part of the carrot family Apiaceae, and can be found in Europe and North Africa. I have attached a picture below in order to better visualize it.
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