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Poison ivy is a type of allergenic plant in the genus Toxicodendron native to Asia and North America. Formerly considered a single species, Toxicodendron radicans , poison ivies are now generally treated as a complex of three separate species: T. radicans , T. rydbergii , and T. orientale .
Toxicodendron radicans, commonly known as eastern poison ivy [3] or poison ivy, is a species of allergenic flowering plant. It has numerous subtaxons and forms both vines and shrubs. Despite its common name, it is not a true ivy, but rather a member of the cashew and pistachio family Anacardiaceae.
Leaves may be shiny or dull, and the color varies with the season. Vines grow almost straight up rather than wrapping around their support and can grow to 8–10 m in height. In some cases, Poison ivy may entirely engulf the supporting structure, and vines may extend outward like limbs so that it appears to be a Poison ivy "tree".
Poison ivy won't go away overnight, but with the right creams, strategies and pills, you can take the misery away fast. Skip to main content. Subscriptions; Animals. Business. Fitness. Food ...
Poison ivy has three leaves (one on each side and in the center). Poison oak also has three leaflets, but they are rounder. It grows like a shrub or vine.
Poison ivy oils can linger on anything that touches the plant for a long time — basically until whatever it touches has been washed — according to the U.S. Food and Drug Administration. That ...
Urushiol-induced contact dermatitis (also called Toxicodendron dermatitis or Rhus dermatitis) is a type of allergic contact dermatitis caused by the oil urushiol found in various plants, most notably sumac family species of the genus Toxicodendron: poison ivy, poison oak, poison sumac, and the Chinese lacquer tree. [1]
Toxicodendron orientale is a climbing vine that grows on trees or other supports. The deciduous leaves of T. orientale are trifoliate and grow to be 3–10 centimetres (1 + 1 ⁄ 4 –4 in) in length.