Loading profile. Please wait . . .

---

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: Forests, woodlands and swamps

---

Description

Pale gray to white thallus of small, adnate lobes, rounded sinuses forming circular gaps between lobes (“loops”); mostly unbranched, short black rhizines on some lobe margins; underside black; eroding pustules creating fragments that act as diaspores, pustule breakdown exposing a thin white medulla; CHEMISTRY: medulla C-, K+, KC+ brown/red, cortex UV+ yellow; FIELD ID: with a field UV test, unmistakable

Similar Species

Other pustulose Hypotrachyna species are UV- (see key below)

Related Rare Species

Hypotrachyna croceopustulata, H. cryptochlora, H. oostingii, H. pseudosinuosa

Habitat

Widespread in forests, woodlands & swamps; substrates: hardwood bark: 18% Quercus, 5% Ilex & 35% other hardwoods or unknowns; conifer bark: 26% Pinus, 7% Juniperus, 7% Taxodium & 3 records on Tsuga

Life History

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

Survey Recommendations

None

Range

Statewide

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.

Authors of Account

Malcolm Hodges

Date Compiled or Updated

28 March 2022