Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

White Rattlesnake-root
Prenanthes alba
Family: Asteraceae

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

Global Rank: G5
State Rank: S1

Open woodlands and thickets.

Species Description:
Perennial herb.

Flowering Period: Early August to mid November.

Additional Information at NatureServe

Diagnostic Characteristics:
There are several species of Prenanthes that are considered rare in Kentucky. P. alba is distinguished by have a cinnamon brown pappus. Also the inflorescence is glabrous and there are 8-18 flowers (fewer in P.altissima).

Timber removal may be beneficial and even needed to maintain the open character of the habitat for this species. Hand removal of trees in the vicinity of the population is necessary to avoid impacts from timber operations. Exotic pest plants are a threat to this species and should be removed. Avoid creating access to the site through trail or road construction.

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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