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rashes, itching, inflammation, oozing, and, in severe cases, a burning sensation. 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 ...
Toxicodendron is a genus of flowering plants in the sumac family, Anacardiaceae. It contains trees, shrubs and woody vines, including poison ivy, poison oak, and the lacquer tree. All members of the genus produce the skin-irritating oil urushiol, which can cause a severe allergic reaction.
Urushiol in its pure form is a pale-yellow liquid with a density of about 0.968 g/mL and a boiling point of 200 °C (392 °F). It is soluble in diethyl ether, acetone, ethanol, carbon tetrachloride, and benzene. [12][13] Urushiol is a mixture of several closely related organic compounds. Each consists of a catechol substituted in the 3 position ...
Toxicodendron radicans, commonly known as eastern poison ivy[3] or poison ivy, is an allergenic flowering plant that occurs in Asia and eastern North America. The species is well known for causing urushiol-induced contact dermatitis, an itchy, irritating, and sometimes painful rash, in most people who touch it.
The shrub can grow to 1 metre (3 feet) tall. Its leaves are 15 centimetres (6 inches) long, alternate, with three leaflets on each. The leaflets are usually hairy and are variable in size and shape, but most often resemble white oak leaves; they usually turn yellow or orange in autumn. The fruit is small, round, and yellowish or greenish.
Toxicodendron vernicifluum. Toxicodendron vernicifluum (formerly Rhus verniciflua[1]), also known by the common name Chinese lacquer tree, [1][2][3] is an Asian tree species of genus Toxicodendron native to China and the Indian subcontinent, and cultivated in regions of China, Japan and Korea. [4] Other common names include Japanese lacquer ...
Toxicodendron vernix. Rhus venenata DC. Toxicodendron vernix, commonly known as poison sumac, [4] or swamp-sumach, [5] is a woody shrub or small tree growing to 9 metres (30 feet) tall. [6][7] It was previously known as Rhus vernix. This plant is also known as thunderwood, particularly where it occurs in the southern United States.
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.
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