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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]
The leaves and stems of the western poison oak plant (Toxicodendron) can release an oil called urushiol. It gets on your skin if you touch the plant but some people also breathe in the oil when ...
The poison is a complex mix of lectins with the highest concentration in the fruits and seeds, followed by the root bark and the flowers. There is little poison in the leaves. [179] The lectins, generally called robin, are less toxic than those of e.g. Abrus (abrin) or Ricinus (ricin), and in non-fatal cases the toxic effects tend to be ...
Toxicodendron diversilobum is extremely variable in growth habit and leaf appearance. It grows as a dense 0.5–4 metres (1 + 1 ⁄ 2 –13 feet) tall shrub in open sunlight, a treelike vine 3–9 m (10–30 ft) and may be more than 30 m (100 ft) long with an 8–20 centimetres (3 + 1 ⁄ 4 – 7 + 3 ⁄ 4 inches) trunk, as dense thickets in shaded areas, or any form in between.
An expert from Franklin County's Keystone Health shares information about poison ivy, oak and sumac, and the effects of the poisonous plants. Take Care: What you need to know about poison ivy, oak ...
Leaves are often used in salads, soups or as a cooked green like spinach. People also utilize the plant for health benefits through oils, tinctures and teas. Here's a recipe for a vegan creamy ...
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, [8] Atlantic poison oak has small clumps of hair on the veins on the underside of the leaves, while poison ivy does not.
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. On the compound trifoliate leaves, the two leaflets opposite each other are typically asymmetrical , in contrast to the terminal leaflet which always shows bilateral symmetry .