Poison oak

The name Poison oak refers to various species of the genus Toxicodendron 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.