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Federal Protection: No US federal protection

State Protection: No Georgia state protection

Global Rank: GNR

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: None

Element Occurrences (EOs) in Georgia: 0

Habitat Summary for element in Georgia: Hardwood swamps, moist hardwood forests

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Description

Pale green thallus corticate, fairly thick, with apothecia immersed in pits, with whitish, slightly raised, thick margins; thick white exciple cracking into sections, creating an additional layer inside margins of pit, sometimes folding over and almost completely covering disk; MICROSCOPY: spores colorless, muriform, 1-4/ascus, thick-walled, about 65-90(-100) µm long; FIELD ID: requires dissection

Similar Species

Other Thelotrema species have very different looking thalli, apothecia or spores

Related Rare Species

None

Habitat

Hardwood swamps, moist hardwood forests, on hardwood bark: most records on Nyssa, also on Acer, Fagus, Magnolia & Quercus

Life History

Corticolous crustose lichenized fungus, photobiont an alga in Trentepohlia

Survey Recommendations

None

Range

Coastal Plain

Threats

Unknown

Georgia Conservation Status

Rare to occasional

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.

Harris, R. C. 1995. More Florida lichens including the 10-cent tour of the pyrenolichens. Unpublished manuscript, Bronx, N.Y.

Authors of Account

Malcolm Hodges

Date Compiled or Updated

1 August 2022