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Eastern Poison Ivy

Poison Ivy Pictures

From Vincent Iannelli, M.D., About.com

Updated: April 13, 2007

About.com Health's Disease and Condition content is reviewed by Kate Grossman, MD

The classic 'leaves of three, let it be' configuration of a poison ivy plant.
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Eastern Poison IvyJennifer Anderson/USDA-NRCS PLANTS Database
Eastern Poison Ivy
This form of eastern poison ivy is found in most of the eastern United States, including all states from Texas up to South Dakota and eastward.

In addition to having three leaflets, note that the middle leaflet has a longer stalk (petiole) than the other two, another characteristic of poison ivy.

Other characteristics of poison ivy that you can see:

  • leaves that are fatter near their base
  • elliptical leaves with slight lobes
  • leaves are all about the same size
  • no thorns along the stem
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