Loading profile. Please wait . . .

---

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:

Element Occurrences (EOs) in Georgia: 0

Habitat Summary for element in Georgia: Mesic hardwood forests

---

Description

Pale to greenish thallus, thick, corticate; apothecia irregular, sunken, sides often separating from sides of thalline pit; edges of pit raised, whitish, disks bluish-pruinose; apothecia are in patches on thallus; MICROSCOPY: spores brown, submuriform, 8/ascus, approximately 17-21 x 10-11 µm; CHEMISTRY: thallus K+ yellow-orange (stictic acid); FIELD ID: dissection & chemical tests required to separate from related species

Similar Species

Thelotrema subtile has no chemistry & colorless, septate spores

Related Rare Species

None

Habitat

Mesic hardwood forests, on hardwood bark, mostly Quercus

Life History

Corticolous crustose lichenized fungus, photobiont a green alga in Trentepohlia

Survey Recommendations

None

Range

Coastal Plain

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.

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 Unpublished manuscript, Bronx, N.Y.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

4 May 2022