Poison oak
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The name Poison oak refers to various species of the Toxicodendron genus that grow in North America.
- Western Poison-oak (Toxicodendron diversilobum or Rhus diversiloba) is found only on the Pacific Coast of North America, ranging from southern Canada to Baja California.
- Atlantic Poison-oak (Toxicodendron pubescens or Rhus toxicarium) grows mostly in sandy soils in eastern parts of the United States.