Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

Poison Sumac
Toxicodendron vernix
Family: Anacardiaceae

Protection Status:
State Status:  E
USFWS Status: {null}

Global Rank: G5
State Rank: S1

Wet forests or thickets such as bottomland hardwood forests but also possible in peaty seepage areas.

Species Description:
Small tree.

Flowering Period: Early May to mid June.
Fruiting Period: Early August to late September.

Additional Information at NatureServe

Diagnostic Characteristics:
Unlike the other members of this family in this area, the leaf of poison sumac has seven or more leaflets and these are entire, not toothed. It is a shrub to 5m height. To distinguish from non-poisonous sumacs, the inflorescence is loose and the fruit are white.

Avoid changes in moisture/hydrologic conditions at the site. Changes could result from overstory removal, stream/wetland alteration or vegetation removal that would result in increased erosion. Timber removal would be detrimental.

Global Range:

Known Kentucky Occurrences:

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Data last updated: Wednesday, May 28, 2014
Kentucky State Nature Preserves Commission
801 Teton Trail
Frankfort,KY 40601
Phone: (502) 573-2886
Fax: (502) 573-2355
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