This plant is often confused with wild carrots or parsley, but is considered the most violently toxic plant in North America.

Abraham Lincoln’s mother died after ingesting milk from a cow that had grazed on this plant, which contains a toxic alcohol known as trematol.

Eight seeds from this plant can cause death in adults.

According to legend, Macbeth’s soldiers poisoned the invading Danes with wine made from the sweet fruit of this plant.

This plant contains toxins so strong that people have become ill after eating honey made by bees that visited its flowers.

The beautiful but highly poisonous seeds of this plant are strung into necklaces and rosaries and used in folk percussion instruments.

This poisonous plant was administered to criminals in ancient times and has been used in minute amounts for reducing fever, treating neuralgia, and other medicinal purposes.

Contact with the leaves and sap of this plant can cause phytophotodermatitis, in which the skin erupts in severe blisters if exposed to sunlight; it can even cause blindness if the sap enters the eyes.

Ingestion of this plant, which is considered extinct in the wild, can cause disturbing hallucinations, paralysis, tachycardia, and memory loss and can be fatal.

This tree is so poisonous that smoke from its burning wood irritates the eyes, and latex from its leaves and bark causes skin inflammation.