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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: None

Element Occurrences (EOs) in Georgia: 0

Habitat Summary for element in Georgia: Mesic hardwood forest, mixed pine ? hardwood woodland

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Description

Green or gray lobes with marginal whitish soralia on reflexed lobe tips, the soralia not much wider than the lobes; undersides ecorticate, white or with narrow yellow patches near lobe tips; dark rhizines with long side branches; CHEMISTRY: if present, yellow pigment K-; FIELD ID: requires careful observation to separate from several similar congeners

Similar Species

Heterodermia galactophylla has more short side-lobes, short side-branches on pale rhizines, & its soralia are noticeably wider than narrow, delicate lobes; other Heterodermia with reflexed terminal soralia have undersides either corticate or ecorticate & more thoroughly pigmented

Related Rare Species

Heterodermia appalachensis, H. crocea, H. erecta

Habitat

Mesic hardwood forest, mixed pine – hardwood woodland; substrates: mostly hardwood bark, about half Quercus & half other hardwoods; 1 record on moss over Juniperus & 1 on silicious rock

Life History

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

Survey Recommendations

None

Range

Statewide

Threats

Unknown

Georgia Conservation Status

Occasional

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.

Lendemer, J. C. 2009. A synopsis of the lichen genus Heterodermia (Physciaceae, lichenized Ascomycota) in eastern North America. Opuscula Philolichenum 6: 1-36.

Authors of Account

Malcolm Hodges

Date Compiled or Updated

23 March 2022