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Federal Protection: No US federal protection

State Protection: No Georgia state protection

Global Rank: G5?

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 outcrops, rocky forests

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Description

Thin, whitish thallus dispersed areolate, verrucose; black disks with rims flat when young, becoming convex and appearing rimless later; CHEMISTRY: thallus K+ yellow; MICROSCOPY: epihymenium green or blue-green, exciple blue-gray, hypothecium dark yellow-brown, spores colorless, simple, 8/ascus; FIELD ID: requires dissection to sort from other black-dot crusts

Similar Species

Other Lecidea/Lecidella species; Buellia species, superficially (spores different); Lecidella stigmatea also has a blue-green epihymenium but its hypothecium is usually colorless to pale yellowish-brown (can be a judgement call)

Related Rare Species

None

Habitat

Rock outcrops, rocky forests, on silicious rock

Life History

Saxicolous crustose lichenized fungus, photobiont a green unicellular alga

Survey Recommendations

None

Range

Cumberland Plateau, Southern Blue Ridge

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.

Authors of Account

Malcolm Hodges

Date Compiled or Updated

19 April 2022