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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: Rock outcrops

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Description

Gray to brown thallus with lobes 0.5-3 cm in width, stippled with brown ostioles of imbedded perithecia; lower surface tan to dark brown, smooth; both sides of thallus bumpy from large perithecia pushing surfaces out; single holdfast attaches each lobe to rock; MICROSCOPY: perithecia 0.4-0.6 mm in diameter; FIELD ID possible with experience, focusing on prominence of perithecia

Similar Species

Dermatocarpon arenosaxi has perithecia 0.2-0.3 mm in diameter; it & D. luridum have many smaller lobes or multiple holdfasts, & are on silicious rock; on calcareous rock, D. dolomiticum has smaller, less prominent perithecia & more consistently black perithecia

Related Rare Species

None

Habitat

Rock outcrops, on silicious or calcareous rock

Life History

Saxicolous crustose lichenized fungus, photobiont a unicellular green alga (Myrmecia or other)

Survey Recommendations

None

Range

Cumberland Plateau, Ridge & Valley, Southern Blue Ridge

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.

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 Unpublished manuscript, New York Botanical Garden, Bronx, NY.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

26 July 2022