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Ocellularia americana Hale
American Volcano

Photo © Malcolm Hodges, from a specimen collected in Liberty Co., Ga., 31 January 2014
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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 hardwood forests and swamps


Description

Pale thallus with raised, lumpy warts surrounding deeply recessed apothecia; large pores expose apothecial tissue; medulla pink; MICROSCOPY: large, colorless spores transversely septate, about 20-celled; CHEMISTRY: medulla C+ pink (gyrophoric acid); FIELD ID not possible, dissection & chemical tests required to sort out group of lookalike species

Similar Species

Other fertile Ocellularia species have muriform spores

Related Rare Species

None

Habitat

Mesic hardwood forests & swamps, on hardwood bark, especially Nyssa & Celtis

Life History

 Corticolous crustose lichenized fungus, photobiont an alga in 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

10 May 2022