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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: Mesic, rocky hardwood forests

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Description

Indistinct green thallus of minute green structures (“goniocysts”), sometimes with tiny, pale disks; MICROSCOPY: photobiont in packets or goniocysts; FIELD ID: dissection required

Similar Species

Catillaria chalybeia has brown disks

Related Rare Species

None

Habitat

Mesic hardwood forests, on silicious rock

Life History

Saxicolous crustose lichenized fungus, photobiont a green unicellular alga

Survey Recommendations

None

Range

Southern Blue Ridge, Piedmont

Threats

Unknown

Georgia Conservation Status

Rare, almost certainly overlooked due to inconspicuous appearance

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 Unpublished manuscript, New York Botanical Garden, Bronx, NY.

Tripp, E. A. & J. C. Lendemer. 2020. Field guide to the lichens of Great Smoky Mountains National Park. The University of Tennessee Press, Knoxville.

Authors of Account

Malcolm Hodges

Date Compiled or Updated

6 March 2022