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Federal Protection: No US federal protection

State Protection: No Georgia state protection

Global Rank: GNR

State Rank: SU

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: None

Element Occurrences (EOs) in Georgia: 0

Habitat Summary for element in Georgia: Mixed subxeric pine ? hardwood woodland

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Description

Pale indistinct thallus without a photobiont; ascomata large, dark, irregular smudges; MICROSCOPY: spores 6-9(-12)-celled, one end enlarged; FIELD ID: smudgy lirellae on pale thallus, pine twig substrate, lack of photobiont; requires dissection to confirm ID

Similar Species

Arthonia quintaria is not known to occur on lowland pines

Related Rare Species

None

Habitat

Mixed subxeric pine – hardwood woodland, on Pinus bark (twigs, branches)

Life History

Corticolous crustose fungus (unlichenized)

Survey Recommendations

None

Range

Known only from the Piedmont, at an ultramafic rock site

Threats

Clearcutting, development

Georgia Conservation Status

Rare

Conservation Management Recommendations

Conserve rare, unique sites

References

Brodo, I. M. 2001. Lichens of North America. 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.

Lendemer, J. C. & D. Ray. 2017. Two new pinicolous Arthonia (Arthoniaceae; Arthoniomycetes) from the Delmarva Peninsula of the Atlantic Coastal Plain in eastern North America. Bryologist 120: 11-18.

Authors of Account

Malcolm Hodges

Date Compiled or Updated

4 March 2022