Loading profile. Please wait . . .

---

Federal Protection: No US federal protection

State Protection: No Georgia state protection

Global Rank: G5

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:

Element Occurrences (EOs) in Georgia: 0

Habitat Summary for element in Georgia: In forested habitats

---

Description

Pale blue-green-gray, matte thallus of narrow lobes (0.5-1.5 mm wide), often forming small rosettes; mounded pale soralia dot older parts of thallus, on lobe surfaces; corticate lower surface is white to pale tan, with pale rhizines; FIELD ID: the pale soralia on a neat blue-green thallus is usually easy to identify in the field, taking care to eliminate Similar Species

Similar Species

Physcia atrostriata has marginal green soralia and fuzzy-pruinose lobe edges; P. crispa is marginally sorediate, & has broader lobes; P. clementei is rare, & its soralia form from large pustules; P. sorediosa has a dark lower surface at center, & soredia that form at margins & creep onto upper surface irregularly

Related Rare Species

Physcia clementei, P. crispa, P. halei, P. pseudospeciosa

Habitat

In forested habitats; substrates: hardwood bark: 21% Quercus, 15% Carya, 12% Acer & 34% other hardwoods or unknowns; conifer bark: 7% Taxodium, 6% Juniperus & 1 record on Pinus; 2 records on moss over bark; 5 records from limestone or concrete & 2 from silicious rock; 1 record on wood shingles, & 1 from metal farm equipment

Life History

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

Survey Recommendations

None

Range

Statewide

Threats

Unknown

Georgia Conservation Status

Common throughout

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

3 August 2022