poison sumac

poison sumac

noun
a shrub or small tree, Rhus vernix (or Toxicodendron vernix ), of swampy areas of the eastern U.S., having pinnate leaves and causing severe dermatitis when touched by persons sensitive to it.
Also called poison dogwood.


Origin:
1810–20

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American Heritage
Medical Dictionary

poison sumac n.
A swamp shrub of the southeast United States, having compound leaves and greenish-white berries and causing an itching rash on contact with the skin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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