What's the Most Poisonous Plant in North America?

What's the Most Poisonous Plant in North America?

The carrot (Apiaceae) family comprises 434 genera and about 3,700 species and is characterized by a flat-topped flower cluster, called an umbel. Water hemlock (Cicuta), one of several toxic members of this family, is considered to be the most toxic plant in North America. There are four species of water hemlock in North America, all highly poisonous and native to North America: spotted (C. maculata), western (C. douglasii), bulblet-bearing (C. bulbifera), and Mackenzie’s (C. virosa).

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