Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

Lucy Braun's White Snakeroot
Ageratina luciae-brauniae
Family: Asteraceae

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

Global Rank: G3
State Rank: S3

Moist areas near the dripline of sandstone rockhouses.

Species Description:
Perennial herb.

Flowering Period: Early September to late September.

Additional Information at NatureServe

Diagnostic Characteristics:
This perennial herb is similar looking to the common white snakeroot (A.altissium synonym = Eupatorium rugosum). The difference is this species is a rockhouse endemic and has leaf blades about as long as the petiole (the "stem" of the leaf) and they are very thin and delicate. The leaf petioles are longer than the leaf blade in white snakeroot.

The habitat for this species is very specialized and not likely to withstand much alteration. Exotic pest plants and even weed invasion are a threat. Grazing or browsing pressure, vegetation removal, hydrologic changes (i.e. vegetation removal in the vicinity, stream alterations) would be detrimental.

Global Range:
Cumberland Plateau in Tennessee and Kentucky. Fentress, Pickett, Scott, and Morgan Cos., Tennessee; Jackson, McCreary, Pulaski, Whitley and Wolfe Cos., Kentucky.

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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