Natural History Misc (90/139)

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Close-up of blistered fingers following contact with Poison Ivy (Toxicodendron radicans). The urushiol oils in all parts of the plant induce severe contact dermatitis to a large percentage of individuals who are allergic.  The reaction shown was approximately 9 days after initial contact. Columbus, Ohio, USA.
Close-up of blistered fingers following contact with Poison Ivy (Toxicodendron radicans). The urushiol oils in all parts of the plant induce severe contact dermatitis to a large percentage of individuals who are allergic. The reaction shown was approximately 9 days after initial contact. Columbus, Ohio, USA.
Filename: poison_ivy_blisters.jpg
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