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Federal Protection: No US federal protection

State Protection: No Georgia state protection

Global Rank: G4G5

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: Rock outcrop complexes, woodlands with boulders

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Description

Pale green-gray thallus is rimose-areolate; disks sunken to form narrow, dark craters, with raised white rims cracked radially; MICROSCOPY: spores muriform, pale to brown, 16-32 x 10-20 µm; FIELD ID possible with experience, keying in on deep black sunken apothecia surrounded by radially cracked rims

Similar Species

Diploschistes scruposus is often paler, the thallus lumpy, with white-rimmed black or gray disks sunken in more open craters

Related Rare Species

None

Habitat

Rock outcrop complexes, woodlands with boulders, on silicious rock

Life History

Saxicolous crustose lichenized fungus, photobiont a green alga (Trebouxia?)

Survey Recommendations

None

Range

Mostly above the Fall Line, with a few records from the Coastal Plain

Threats

Unknown

Georgia Conservation Status

Uncommon

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.

Authors of Account

Malcolm Hodges

Date Compiled or Updated

27 July 2022