LichensHistorical quarrying likely led to a reduction in population size.
Population Trend:
Subpopulations in the vicinity of Atlanta, air pollution is a threat to the species. Observations of thallus health, along with the health of co-occurring lichens suggest that the air quality is already having a negative impact on the species. Recreation, including trampling and rock climbing and bouldering. Herbicide application power line corridors.
| Country | Trend | Redlisted |
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