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Bagliettoa marmorea (Scop.) Gueidan & Cl. Roux
Purple Pitted-stone Lichen

Photo © Malcolm Hodges, Walker Co., 27 April 2021
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Federal Protection: No US federal protection

State Protection: No Georgia state protection

Global Rank: GNR

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: Limestone outcrops


Description

Purplish, indistinct thallus (endolithic) with tiny black sunken ascomata; FIELD ID: thallus color unmistakable 

Similar Species

None (other Bagliettoa have pale, unpigmented thalli)

Related Rare Species

None

Habitat

Limestone outcrops, on rock

Life History

Saxicolous crustose lichenized fungus, photobiont a green, unicellular alga

Survey Recommendations

None

Range

Cumberland Plateau, Ridge & Valley

Threats

Quarrying

Georgia Conservation Status

Uncommon

Conservation Management Recommendations

Protect natural limestone outcrops

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.

Harris, R. C. & D. Ladd. 2005. Preliminary draft: Ozark lichens. Unpublished manuscript, New York Botanical Garden, Bronx, NY.

Authors of Account

Malcolm Hodges

Date Compiled or Updated

6 March 2022