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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: Mixed pine – hardwood woodlands and forests, mesic hardwood forests, swamps

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Description

Deep green to gray-green thallus of branching lobes, 1-2 mm wide, with roughened white margins, & white pruina in small clumps clustered on lobe tips (almost always present); soralia forming on lobe margins, often with dark gray soredia; medulla salmon-orange, undersides black; CHEMISTRY: cortex UV-, medulla K-, KC+ reddish (slowly; substance?); FIELD ID possible with field UV test & observation of distinctive speckled pruina; expose medulla if needed

Similar Species

Other Pyxine are UV+ yellow except P. eschweileri, which is smaller, paler & maculate, & has a pale yellow or white medulla & mounded laminal soralia

Related Rare Species

None

Habitat

Mixed pine – hardwood woodlands & forests, mesic hardwood forests, swamps; substrates: hardwood bark: 36% Quercus, 15% Acer, 11% Carya, 5% Liriodendron & 21% other hardwoods or unknowns; 1 record on moss over bark; 11% on silicious rock & 1 record on concrete

Life History

Corticolous foliose lichenized fungus, photobiont a unicellular green alga

Survey Recommendations

None

Range

Statewide, thinning toward southern Coastal Plain

Threats

Unknown

Georgia Conservation Status

Common

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.

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 Unpublished manuscript, New York Botanical Garden, Bronx, NY.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

5 August 2022