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13 plants that could kill you

Monkshood

Photo: Bernd Haynold/Wiki Commons/GNU

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Monkshood

Monkshood has a long tradition as a deadly plant and was used by ancient warriors to poison the water of their enemies. It was once used as a popular werewolf-detection tool. The flower was held near the alleged wolf’s chin, and if a yellow-tinged shadow appeared, that was confirmation that the person was a werewolf.