Difference between revisions of "Poison Ivy"
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Revision as of 19:26, 16 June 2009
Poison Ivy (Toxicodendron radicans). Leaves and stems. From Theodore Roosevelt Island, Washington, D.C. n.d.
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Overview
Poison Ivy is a plant in the family Anacardiaceae. The name is sometimes spelled "Poison-ivy" in an attempt to indicate that the plant is not a true Ivy (Hedera). It is a woody vine that is well known for its ability to produce urushiol, a skin irritant that causes an itching rash for most people, technically known as urushiol-induced contact dermatitis. Formerly common only in the Southern United States, poison-ivy is now becoming increasingly prevalent in the North. Kudzu is also seeing a similar geographic extension of its naturally occurring habitat.
“Urushiol” comes from the Japanese word for lacquer.