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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: None

Element Occurrences (EOs) in Georgia: 0

Habitat Summary for element in Georgia: Silicious rock along streams

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Description

Brown to gray-green thallus thin, patchy; black perithecia superficial, covered with a thin thalline layer or naked; MICROSCOPY: colorless spores 4-celled, 8/ascus; FIELD ID: requires dissection

Similar Species

Thelidium decipiens & T. minutulum spores are 2-celled

Related Rare Species

None

Habitat

Silicious rock in or along streams

Life History

Saxicolous crustose lichenized fungus, photobiont a green alga in Protococcus or Trebouxia

Survey Recommendations

None

Range

Piedmont/Coastal Plain interface

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.

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 Unpublished manuscript, New York Botanical Garden, Bronx, NY.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

1 November 2024