Tennessee purple coneflower  (Echinacea tennesseensis)

As its common name implies, this coneflower is endemic to Tennessee, U.S., where it is limited to five sites within an approximate 170 km² area of the Central (Nashville) Basin (6).

This plant grows in cedar glades, rocky areas with exposed bedrock or very shallow soil, where trees are largely unable to grow. However, red cedar (Juniperus virginiana) occurs in the margins of the glades or in cracks in the bedrock where the roots can gain a foothold, giving these glades their common name (4) (6). The Tennessee purple coneflower will not usually grow where there is more than 50 percent shade (4).