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Poison ivy facts for kids

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Toxicodendron radicans, leaves
Poison ivy in spring, Ottawa, Ontario

Poison ivy (Toxicodendron radicans) is a vine. It is well-known for causing a rash. The rash is urushiol-induced contact dermatitis. This is itchy, irritating, and sometimes painful. This is an example of a defence against herbivores.

The vine's leaves come in threes, with a shiny appearance caused by the oil on the leaves. It is a common weed in the eastern North America and parts of China.

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