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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: Boulders within mixed forest

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Description

Filamentous thallus green to orange, loosely tufted; difficult to distinguish from Trentepohlia algae except when fertile; apothecia bright orange, a thickened, conical base beneath disks ("stalked," in the literature), when viewed from side; MICROSCOPY: colorless spores 2-celled; FIELD ID: with experience, can be told from C. implexum, which has a denser thallus & flat disks when viewed from the side

Similar Species

Coenogonium implexum has denser tufts & flattened disks; C. interpositum, not yet known from Ga., has single-celled spores

Related Rare Species

None

Habitat

Mixed hardwood – pine forest, on silicious rock

Life History

Saxicolous micro-fruticose lichenized fungus, photobiont an alga in genus Trentepohlia

Survey Recommendations

None

Range

Coastal Plain

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

26 December 2023