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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.
Poison ivy always grows with groups of three glossy, pointed leaflets on leaves that alternate along the branch (in contrast to similar looking leaves of boxelder which has opposite leaves). Poison oak has a similar appearance, but with larger and more rounded lobes, with a light, velvety pubescence and grow in groups of 3, 5, or 7. Poison ...
Skin contact with the poison ivy, poison oak and poison sumac, which all contain the same substance (toxicodendrol or urushiol), is one way to get it. ... "Poison sumac has leaves in a cluster of ...
The three-leaf plant, which causes an itchy red rash and blisters, is most commonly associated with the spring and summer, but don’t let your guard down; poison ivy is a danger to hikers and ...
Here’s how to avoid the itchy rash poison ivy can leave behind.
Growing as a shrub, its leaves are in groups of three. Leaves are typically rounded or lobed and are densely-haired. Although it is often confused with the more common poison ivy, even in the scientific literature, [10] Atlantic poison oak has small clumps of hair on the veins on the underside of the leaves, while poison ivy does not.
In areas where desirable plants also reside, hand pulling the poison ivy may be the best control