Poison oak refers to two plant species in the genus Toxicodendron, both of which can cause skin irritation:

• Toxicodendron diversilobum or Pacific poison oak, found in western North America
• Toxicodendron pubescens or Atlantic poison oak, found in southeastern North America

This page is an index of articles on plant species (or higher taxonomic groups) with the same common name (vernacular name).
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