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poison sumac

?Poison Sumac

Poison Sumac leaves
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Sapindales
Family: Anacardiaceae
Genus: Toxicodendron
Species: T. vernix
Binomial name
Toxicodendron vernix
Kuntze

Poison Sumac (Toxicodendron vernix or Rhus vernix) is a woody shrub growing to 3 m tall. All parts of the plant contain a toxic resin called urushiol that causes skin and mucous membrane irritation to humans. When burned, inhalation of the smoke causes diarrhea and other internal irritations. The leaves are pinnate, 25-50 cm long, with 7 - 13 leaflets; the leaflets are 4-10 cm long and sometimes mistaken for individual leaves. The veins from which the leaflets grow are always red. The fruit is a small white or grey berry, produced in panicles 10-20 cm long; this distinguishes it from other sumacs which have red berries.

Poison Sumac

Poison sumac grows exclusively in very wet or flooded soils, usually in swamps and peat bogs, in the eastern United States and Canada.

In the U.S., it can grow as far west as Wisconsin, where it is found only in the southern part of the state. In the U.S., it is listed under the Federal Noxious Weed Act of 1974, as amended (7 U.S.C. 2801 et seq.), as a "noxious weed". Most U.S. states list this plant in similar categories. It is considered one of the "U.S. Invasive Weeds" [1].

Avoidance, treatment, and safety

For specific information on prevention and treatment of Toxicodendron rashes, see Urushiol-induced contact dermatitis.

References and external links

  • Entry for "TOVE" on PLANTS Database, USDA.
  • Wisconsin page for poison sumac.
  • Poison ivy / oak / sumac in "The Medicinal Herb FAQ".
  • The Poison Sumac Page Photos and facts about poison sumac.
  • Poison Oak at Wayne's Word
Search Term: "Poison_Sumac"

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Here's our top rated poison sumac links for the day:

Sumac is integral part of fall backdrop 

Colorado Springs Gazette - Oct 04 11:50 PM
TO OUR READERS: This is the final “Now Appearing” of the season.

Good to the last drop 
Boston Globe - Oct 05 6:41 AM
The spectacle of fall foliage invites us to take a second look at common wild plants that seem to be changing their personalities this month. For instance, humble staghorn sumac (Rhus typhina) is often considered a weed, but it is actually a native tree that grows in clumps up to 30 feet tall. In fall it sprouts velvety red twigs ...

Poison plants a woe for hunters through fall 
The Daily Comet - Oct 02 3:37 PM
Dr. John Brantley knows it's coming. So does Dr. Greg Ferrara. It is a rash of rashes. "There are a lot of hunters building tree stands and getting their food plots ready and we're going to see a cases of poison ivy," Brantley said.

Orange County's rocky look-alike 
Los Angeles Times - Oct 05 3:21 AM
Hike to the Sinks with Nature Conservancy guides and discover a mini Grand Canyon that's far from the hordes.

Poet Len Roberts awarded prizes, to publish ninth book 
Pocono Record - Oct 04 9:37 PM
Adding to a portfolio that includes three Fulbright grants, numerous awards and nine books of poetry, Northampton Community College professor of English Len Roberts has again won national and international acclaim with two awards, a new book, and a reading at our country's largest poetry festival.

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