Erigeron dolomiticola, commonly known as the Cahaba daisy fleabane, is a species of flowering plant in the family Asteraceae. It is endemic to Bibb County, Alabama, where it is restricted to Ketona dolomite glades.
Erigeron dolomiticola is a perennial herb. It grows in open, rocky glade environments and is adapted to thin, drought-prone soils derived from dolomite. Flowering occurs from late May through October.
The taxon was originally described as Erigeron strigosus var. dolomiticola by J.R. Allison in 2001. It was later elevated to species rank as Erigeron dolomiticola by Poindexter, Keener, and Noyes in 2017.
The species is diploid and morphologically and ecologically distinct from Erigeron strigosus, supporting its recognition as a separate species.
Erigeron dolomiticola is endemic to Bibb County, Alabama. It occurs exclusively on Ketona dolomite glades, a rare and highly specialized habitat characterized by shallow, calcium-rich soils and extreme seasonal conditions.
These glades support a number of narrowly endemic species and differ from other southeastern glade systems in both composition and geology.
Erigeron dolomiticola, still called Erigeron strigosus var. dolomiticola on NatureServe, is considered imperiled (G5T2) due to its restricted distribution and specialized habitat. It is known from a limited number of sites within an area of less than 100 km<sup>2</sup>, with total population estimates ranging from approximately 1,000 to 100,000 individuals.
Threats include habitat degradation from grazing, dumping, and forestry practices, as well as fire suppression, which allows woody species such as Juniperus virginiana to encroach on glade habitats. Although some populations occur on protected lands, long-term declines are suspected due to ongoing habitat loss.