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Federal Protection: No US federal protection

State Protection: No Georgia state protection

Global Rank: G5

State Rank: SNR

Element Locations Tracked in Biotics: No

SWAP 2015 Species of Greatest Conservation Need (SGCN): No

SWAP 2025 Species of Greatest Conservation Need (SGCN): No

2025 SGCN Priority Tier:

Element Occurrences (EOs) in Georgia: 0

Habitat Summary for element in Georgia: Calcareous rock outcrops or anthropogenic landscapes

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Description

Dark olive to black crust of areoles or squamules, not lobed, with a conspicuous blue-black prothallus; granular or flattened cylindrical isidia on surface of thallus; apothecia frequent, dark brown to black, often shiny; FIELD ID possible with experience

Similar Species

None

Related Rare Species

None

Habitat

Calcareous rock outcrops or anthropogenic landscapes, on limestone, concrete

Life History

Saxicolous crustose lichenized fungus, photobiont a cyanobacterium (usually Dichothryx)

Survey Recommendations

None

Range

Cumberland Plateau, Ridge & Valley, Southern Blue Ridge

Threats

Unknown

Georgia Conservation Status

Rare

Conservation Management Recommendations

None

References

Brodo, I. M. 2001. Lichens of North America. Yale University Press, New Haven, Conn.

Brodo, I. M. 2016. Keys to lichens of North America: revised and expanded. Yale University Press, New Haven, Conn.

Esslinger, T. L. 2021. A cumulative checklist for the lichen-forming, lichenicolous and allied fungi of the continental United States and Canada. Version 24. Opuscula Philolichenum 20: 100-394.

Tripp, E. A. & J. C. Lendemer. 2020. Field guide to the lichens of Great Smoky Mountains National Park. The University of Tennessee Press, Knoxville.

Authors of Account

Malcolm Hodges

Date Compiled or Updated

3 August 2022