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Federal Protection: No US federal protection

State Protection: No Georgia state protection

Global Rank: G3G5

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: Mesic hardwood forests

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Description

Dark gray to olive-gray thallus made up of squamules 2-3 mm wide, lobed & dissected, with powdery white edges; apothecia with rust-colored disks & white edges, thalline rims often minutely lobulate; black prothallus usually evident; FIELD ID possible with careful observation (see Similar Species)

Similar Species

Vahliella leucophaea & Rockefellera crossophylla are confined to rocks, lack white edges to squamules, & have rimless brown disks; Pannaria species are foliose, not squamulose

Related Rare Species

None

Habitat

Mesic hardwood forests; substrates: mostly hardwood bark: 59% Quercus, 6% Liquidambar, 6% Liriodendron & 15% other hardwoods; 12% on silicious rock; 1 record from limestone

Life History

Corticolous squamulose lichenized fungus, photobiont a cyanobacterium in genus Nostoc

Survey Recommendations

None

Range

Mostly north of the Fall Line; rare disjunct in Coastal Plain small-stream swamp (Okefenokee Basin)

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

29 July 2022