Search results
Results from the WOW.Com Content Network
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 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 .
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 ...
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 ...
Resin canals located in the inner fibrous bark of the fibrovascular system found in the plant's stems, roots, and leaves are characteristic of all members of this family; resin canals located in the pith are characteristic of many of the cashew family species and several species have them located in the primary cortex or the regular bark.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate
Unlike Toxicodendron radicans (eastern poison ivy), which often appears as a trailing or climbing vine, T. rydbergii is a shrub that can grow to 1 m (3 ft) tall, rarely up to 3 m (10 ft). The leaves are trifoliate and alternate. The leaflets are variable in size and shape, and are usually 15 cm (6 in) long, turning yellow or orange in autumn.
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.