Strausbaugh, Perry D. Formerly, Department of Botany, West Virginia University, Morgantown, West Virginia.
Core, Earl L. Formerly, Department of Biology, West Virginia University, Morgantown, West Virginia.
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A general name applied to several climbing, shrubby, or arborescent (treelike) plants of the genus Toxicodendron, previously known as Rhus, in the sumac family (Anacardiaceae), characterized by ternate leaves, greenish flowers, and white berries that produce an irritating oil. Toxicodendron radicans is the poison ivy of eastern North America; T. diversilobum is the poison oak of California. These plants are natives of North America. Both types cause ivy poisoning, which is an annoying and often painful dermatitis.
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