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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:

Element Occurrences (EOs) in Georgia: 0

Habitat Summary for element in Georgia: Rock outcrops, montane rocky forests

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Description

Green-gray to chestnut brown, smooth thallus composed of a single sheet radiating from the single umbilicus; thalli in undisturbed areas reaching 30 cm in length (thalli usually longer than wide), often with torn or ragged edges; holes in thalli show black tissues beneath/within; underside mostly a dense mat of short black hairs

Similar Species

Lasallia species have bulbous, convex warts on upper surface & undersides without dark hairs; Umbilicaria muhlenbergii has pits & depressions often with black apothecia

Related Rare Species

None

Habitat

Rock outcrops & montane rocky forests, on silicious rock

Life History

Saxicolous foliose lichenized fungus, photobiont an alga in Trebouxia

Survey Recommendations

None

Range

Mostly Southern Blue Ridge, also Cumberland Plateau & Ridge & Valley

Threats

Unknown

Georgia Conservation Status

Fairly common

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

2 August 2022