Misplaced Pages

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Toxicodendron pubescens" – news · newspapers · books · scholar · JSTOR (December 2024) (Learn how and when to remove this message)

Atlantic poison oak
Conservation status
Secure  (NatureServe)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Sapindales
Family:	Anacardiaceae
Genus:	Toxicodendron
Species:	T. pubescens
Binomial name
Toxicodendron pubescens Mill.
Synonyms
Rhus pubescens (Mill.) Farw. Rhus toxicodendron L.

Toxicodendron pubescens (syn. Rhus pubescens), commonly known as Atlantic poison oak, or eastern poison oak, is an upright shrub which can cause contact dermatitis for most people.

Description

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.

Taxonomy

It is not closely related to the true oaks in the beech family, instead being more closely related to sumacs. It is closely related to the other plants in the Toxicodendron genus, including poison ivy, poison sumac, and the lacquer tree.

Distribution and habitat

This species is native to the Southeastern United States from Virginia westward to Texas and Oklahoma.

Atlantic poison oak can be found growing in forests, thickets, and dry, sandy fields.

Toxicity

All parts of this plant contain urushiol, which can cause severe dermatitis in sensitive individuals. The risk of exposure may be reduced by learning to recognize and avoid this species and wearing clothing that covers the legs and arms. Contaminated clothing should be laundered before subsequent handling or use.

Effects of poison oak are similar to those of its close relative poison ivy. It first causes severe itching, evolves into inflammation, non-colored bumps, and then blistering when scratched.

See also

• Poison sumac
• Western poison oak

References

1. NatureServe (30 June 2023). "Toxicodendron pubescens". NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer. Arlington, Virginia: NatureServe. Retrieved 3 August 2023.
2. NRCS. "Toxicodendron pubescens". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 11 December 2015.
3. Digital Atlas of the Virginia Flora: Toxicodendron pubescens. Archived 2011-07-19 at the Wayback Machine

External links

• All about Eastern Poison Oak

• NatureServe secure species
• Toxicodendron
• Flora of the Southeastern United States
• Flora of the United States
• Plants described in 1768
• Taxa named by Philip Miller