CPC National Collection Plant Profile
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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 |
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Primary
custodian for this plant in the CPC National Collection of Endangered
Plants is: |
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Kimberlie McCue, Ph.D. contributed to this Plant Profile. |
Ageratina luciae-brauniae
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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 |
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State Range
| |
Kentucky
South Carolina
Tennessee |
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Habitat
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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). |
State/Area
Protection
| |
State/Area |
Rank |
Status |
Date |
|
| |
Kentucky |
S3 |
S |
7/1/1997 |
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South Carolina |
S1S2 |
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6/13/1985 |
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Tennessee |
S2 |
T |
6/4/2000 |
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Conservation,
Ecology & Research |
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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
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There is no formal, centralized management plan. |
Research Management Needs
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Management needs include protection from trampling. Research needs include understanding aspects of reproductive biology and ecology, seedling establishment and habitat requirements. |
Monitoring Efforts
Ex Situ Needs
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Journal Articles
|
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King, R.M.; Robinson, H. 1970. Studies in the Eupatorieae (Compositae). XIX. New combinations in Ageratina. Phytologia. 19: 208-215.
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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.
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Reports
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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.
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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.
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This
profile was updated on 9/28/2010 |
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