Poison Sumac is a plant that can cause skin irritation and allergic reactions in many people. It typically grows in wet, wooded areas and is characterized by its compound leaves, which have 7 to 13 leaflets. The leaves are smooth and can turn red in the fall. The plant also produces small, white berries. Contact with any part of Poison Sumac can lead to a rash similar to that caused by Poison Ivy or Poison Oak. To avoid exposure, it is important to recognize the plant and steer clear of it when hiking or spending time outdoors.