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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: Granitic outcrops, massive boulders in forests

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Description

Brown to brown-gray thallus is rimose-areolate, shiny (all Ga. material so far), areoles sometimes mounded around apothecia; disks sunken to form narrow, dark craters, with raised white rims; MICROSCOPY: spores muriform, brown, 16-26 x 8-18 µm; CHEMISTRY: medulla C+ red (lecanoric acid); FIELD ID: color & glossiness are unusual for the genus; unmistakable with experience

Similar Species

All other Diploschistes in Ga. are pale whitish, blue-white or creamy, with a matte surface

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

Piedmont; observed but not collected on Cumberland Plateau

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.

Nash III, T. H., B. D. Ryan, C. Gries & F. Gungartz (eds.). 2002. Lichen flora of the greater Sonoran Desert region. Vol. I. Lichens Unlimited, Arizona State University, Tempe.

Authors of Account

Malcolm Hodges

Date Compiled or Updated

4 January 2024