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: None

Element Occurrences (EOs) in Georgia: 0

Habitat Summary for element in Georgia: Wide variety of forests, woodlands and swamps

---

Description

Gray thallus of small, adnate, relatively broad lobes, rounded sinuses forming circular gaps between lobes (“loops”); mostly unbranched, short black rhizines on some lobe margins; underside black; abundant, usually short to long isidia at center of thallus, never ciliate, usually brown-tipped, giving a brown cast to the center; CHEMISTRY: medulla K-, KC+ red, C+ pink; FIELD ID: requires careful examination for ciliate isidia, but a field C test to the medulla is recommended to confirm

Similar Species

Hypotrachyna mcmulliniana often has few ciliate isidia, & is superficially similar in appearance; its medulla is C-

Related Rare Species

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

Habitat

Widespread in forests, woodlands & swamps; substrates: hardwood bark: 25% Quercus, 9% Acer, & 38% other hardwoods or unknowns; conifer bark: 9% Pinus, 5 records on Juniperus, 2 on Tsuga & 1 on Taxodium; 13% on silicious rock; 1 record on moss over bark, & 1 on soil

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.

Lendemer, J. C. & J. L. Allen. 2020. A revision of Hypotrachyna subgenus Parmelinopsis (Parmeliaceae) in eastern North America. Bryologist, 123: 265-332.

Authors of Account

Malcolm Hodges

Date Compiled or Updated

25 March 2022