CPC National Collection Plant Profile

Ageratina luciae-brauniae

Photographer:
Kimberlie McCue

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CPC National Collection Plant Profile

Ageratina luciae-brauniae


Family: 
Asteraceae  
Common Names: 
Braun's thoroughwort, Lucy Braun's snakeroot, Lucy Braun's white snakeroot
Author: 
(Fern.) King & H.E. Robins.
Growth Habit: 
Forb/herb
CPC Number: 
1855

Distribution
Protection
Conservation
References


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Ageratina luciae-brauniaeenlarge
Photographer: Kimberlie McCue
kmccue[at]dbg.org

Ageratina luciae-brauniaeenlarge
Photographer: Kimberlie McCue
kmccue[at]dbg.org


Ageratina luciae-brauniae is Fully Sponsored
Primary custodian for this plant in the CPC National Collection of Endangered Plants is: 
Kimberlie McCue, Ph.D. contributed to this Plant Profile.

 
Ageratina luciae-brauniae


Lucy Braun's snakeroot is closely related to several familiar plant species: thoroughworts, boneset, Joe-pye-weed, and white snakeroot. The last-mentioned, when eaten by cows, was the Midwestern source of the deadly milk sickness, which also plagued early settlers and killed Abraham Lincoln's mother. Ageratina luciae-brauniae is a shy member of the genus, living under rock overhangs where its greatest immediate threat is trampling by rock climbers.

Distribution & Occurrence

State Range
  Kentucky
South Carolina
Tennessee
State Range of  Ageratina luciae-brauniae
Habitat
  Shaded wet sandstone, ledges and overhangs (Kral 1983).

Distribution
  Eastern Kentucky, north-central Tennessee, and parts of South Carolina (Campbell et al. 1994).

Number Left
  Between 40 and 50 sites in total. Number of individuals is low at any given site (Campbell et al. 1994).

Protection

Global Rank:  
G3
 
7/4/2001
Guide to Global Ranks
Federal Status:  
 
Guide to Federal Status
Recovery Plan:  
No
 

State/Area Protection
  State/Area Rank Status Date  
  Kentucky S3 S 7/1/1997  
  South Carolina S1S2 6/13/1985  
  Tennessee S2 T 6/4/2000  

Conservation, Ecology & Research

Ecological Relationships
  Ecological relationships are unknown, however this species is often associated with Heuchera villosa and Silene rotundifolia
(Kral 1983, Campbell 1994).

Threats
  Primary threat is trampling by hikers and rock climbers (Campbell 1994).

Current Research Summary
  Germination requirements have been studied and compared with more common species (Walck et al. 1997)

Current Management Summary
  There is no formal, centralized management plan.

Research Management Needs
  Management needs include protection from trampling. Research needs include understanding aspects of reproductive biology and ecology, seedling establishment and habitat requirements.

Monitoring Efforts
  Not Available

Ex Situ Needs
  Not Available

References

Journal Articles

King, R.M.; Robinson, H. 1970. Studies in the Eupatorieae (Compositae). XIX. New combinations in Ageratina. Phytologia. 19: 208-215.

Walck, J.L.; Baskin, C.C.; Baskin, J.M. 1997. Comparative achene germination requirements of the rockhouse endemic Ageratina luciae-brauniae and its widespread close relative A. altissima (Asteraceae). American Midland Naturalist. 137, 1: 1-12.

Reports

Campbell, J.N.; Bonney, S.A.; Kiser, J.D.; Kornman, L.E.; Mac Gregor, J.R.; Meade, L.E.; Risk, A.C. 1992. Cooperative inventory of endangered, threatened, sensitive and rare species. Daniel Boone National Forest, Morehead Ranger District. p.Pages 25-26 & 34.

Kral, R.D. 1983. Asteraceae: Eupatorium luciae-brauniae Fernald [Endangered species, perennial plants of shaded sandstone ledges in Kentucky and Tennessee] Technical publication R8-TP. USDA Forest Service, Southern Region.


  This profile was updated on 9/28/2010
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