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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: Upland woodland, mesic forest

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Description

Gray-green thallus of 0.5-1-cm-wide lobes, surface glossy & faintly maculate; undersides brown, black in center, with short rhizines to lobe edges (interspersed with longer ones); old lobes with abundant laminal isidia, short, becoming branched & occasionally ciliate; lobes with abundant, black cilia at edges; CHEMISTRY: medulla K-, KC+ pink to red, C-, PD-, UV- (norlobaridone); FIELD ID: if familiar with this complex, a field K test on the medulla will sort out this species

Similar Species

Parmotrema neotropicum & P. subtinctorium are similar but their medullae react K+ blood red (see key below)

Related Rare Species

None

Habitat

Upland woodland, mesic forest, on hardwood bark: Liquidambar, Ulmus

Life History

Corticolous foliose lichenized fungus, photobiont a green alga (Trebouxia?)

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.

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 Unpublished manuscript, New York Botanical Garden, Bronx, NY.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

25 May 2022