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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: Rocky upland forests, shaded outcrops

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Description

Pale green or tan, continuous, smooth to lumpy crust with sunken, off-white to tan or pinkish disks; MICROSCOPY: epihymenium is colorless, clear; FIELD ID: immersed, pale disks can be difficult to see at first glance on pale thallus, but are the key ID character

Similar Species

Habitat and basic color should separate the two species, but Ionaspis lacustris has a granular, reddish epihymenium

Related Rare Species

None

Habitat

Rocky upland forests, shaded outcrops, on silicious rock; often on rocks 0.5-1 meter in diameter

Life History

Saxicolous crustose lichenized fungus, photobiont a green unicellular alga (Trebouxia?)

Survey Recommendations

None

Range

Mostly north of the Fall Line; a single report from Coastal Plain rocky sandhills just south of the Fall Line

Threats

Unknown

Georgia Conservation Status

Uncommon

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.

Nash III, T. H., C. Gries & F. Gungartz (eds.). 2007. Lichen flora of the greater Sonoran Desert region. Vol. III. Lichens Unlimited, Arizona State University, Tempe.

Authors of Account

Malcolm Hodges

Date Compiled or Updated

29 March 2022