|Tennessee coneflower, Tennessee purple coneflower|
|Kimberlie McCue, Ph.D.|
The following Participating Institutions are custodians for this species in the CPC National Collection:
Missouri Botanical Garden
The conservation of Echinacea tennesseensis is fully sponsored.
Kimberlie McCue, Ph.D. contributed to this Plant Profile.
The Tennessee coneflower is one of the nation's rarest wildflowers (Clark 2000). Known only from five populations within a 14 mile radius in Middle Tennessee, it was the second plant listed as endangered by the U.S. Fish and Wildlife Service in June 1979 (USFWS 1989).
First listed in the Flora of Tennessee in 1906, the plant was thought to be extinct for half a century until it was rediscovered in 1968 in LaVergne (near Nashville) (USFWS 1989). This site was destroyed by the construction of a trailer park in the 1970's. Two other colonies, discovered in 1972, were destroyed prior to 1975 by housing developments (Shea 1997).
The story above illustrates the major threat to E. tennesseensis; Nashville and the surrounding area is undergoing rapid development, encroaching on the coneflower's habitat. Recently, one site was destroyed by the development of the Nashville Superspeedway that opened in 2001.
Distribution & Occurrence
Cedar glades dominated by red cedar and where the limestone bedrock is either exposed or covered by a thin layer of soil (USFWS 1989).
E. tennesseensis is often found with Juniperus virginiana, Petalostemon gattingeri, and Sporobolus vaginiflorus (USFWS 1989).
Tennessee (USFWS 1989, Kartesz 1996).
|Five populations, individuals can range from 2,000 to 100,000 plants (USFWS 1989).|
Conservation, Ecology & Research
Determination of competitive ability and growth characteristics (Hemmely 1976, Baskauf and Eickmeier 1994, Snyder et al. 1994).
Comparing traits of E. tennesseensis with other members of the genus that are widespread (McGregor 1968, McKeown 1999)
Methods of propagation
Attempts to purchase privately-owned land where the species is present.
There are 3 colonies on state-owned land, and are managed by the State Divisions of Forestry and Ecological Services. These populations are zoned as restricted areas where no timber management is supposed to occur. The involved state divisions have also indicated willingness to assist with any habitat maintenance or experimental manipulations.
Cronquist, A. 1980. Vascular flora of the southeastern United States. Chapel Hill, NC: The University of North Carolina Press. 261p.