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Federal Protection: No US federal protection

State Protection: No Georgia state protection

Global Rank: G3G5

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: Urban areas, elsewhere in woodlands and forests

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Description

Medium-small foliose lichen with pale gray to white (high light) thallus, and lobes adnate to bark surface; lobe tips with white maculae (obscured on whiter thalli), surface of thallus with scattered mounded soralia, sometimes crowded, often in linear groupings; disks occasionally seen; CHEMISTRY: medulla K-, KC- or + faint purple, UV+ blue-white (divaricatic acid); FIELD ID: clues are small soralia (often in lines), adnate, pale (when dry) thallus, lack of cilia

Similar Species

Crespoa crozalsiana usually shows contrast between scarcer white soralia and green thallus, has raised maculae with sunken areas between; its medulla is K+ yellow, KC-, UV-; when wet, can be confused with Flavoparmelia caperata, but that species' soralia begin as erupting pustules

Related Rare Species

Canoparmelia alabamensis is on rock in natural areas & has different chemistry

Habitat

Urban areas, elsewhere in woodlands & forests; substrates: 32% Pinus bark, 19% Quercus, 5% Ulmus, 25% other hardwoods, and 8% other conifers (Juniperus, Taxodium); 7% were silicious rock, and 1 record was on wooden shingles (in cities, on any substrate, e.g., concrete, street signs, etc.)

Life History

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

Survey Recommendations

None

Range

Statewide

Threats

Unknown

Georgia Conservation Status

Abundant in much of Georgia, especially in urban environments, due to tolerance of acid pollution, becoming scarce near coast

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

26 July 2022