Identify Poison

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How to Identify Poison Sumac. Poison sumac, or Toxicodendron vernix, is a plant native to the eastern United States and Canada. Most people develop a painful allergic .The site for answers about poison ivy, oak, sumac and the skin rashes they cause..How to Identify Poison Oak. Hiking or being in nature is enjoyable, but exposure to poison oak causes a very itchy, blistery rash that will quickly put a damper on .People are frequently confused by these two plants when they are first learning to identify poison ivy Toxicodendron radicans . Although the individual leaflets are .

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