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Federal Protection: No US federal protection

State Protection: No Georgia state protection

Global Rank: GNR

State Rank: SU

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: Small-stream swamp forest amid sub-xeric sandhill woodlands

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Description

Whitish thallus with small dark-brown lirellae; lirellae are narrow & branching, without pruina; MICROSCOPY: epihymenium brown, hymenium & hypothecium hyaline, spores in oblong asci, 8/ascus, 3-septate, colorless becoming brown, then shriveled & darker brown in senescence; FIELD ID: like other commas with brown lirellae, so requires dissection to observe spores

Similar Species

Arthonia anglica & A. rubella have colorless spores

Related Rare Species

None

Habitat

Small-stream swamp forest amid sub-xeric sandhill woodlands, on Liriodendron bark

Life History

Corticolous crustose lichenized fungus, photobiont an alga in Trentepohlia

Survey Recommendations

None

Range

Coastal Plain (Fall-Line sandhills)

Threats

Unknown

Georgia Conservation Status

Rare

Conservation Management Recommendations

None

References

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 Unpublished manuscript, New York Botanical Garden, Bronx, NY.

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

27 February 2022