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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:

Element Occurrences (EOs) in Georgia: 0

Habitat Summary for element in Georgia: Streamside rocks, wet-seep edges on outcrops

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Description

Tan-pink to rusty, rimose to continuous thallus with rusty orange, sunken disks; disks often concolorous with thallus and difficult to see; extensive thalli can be mistaken for rusty mud on rock; CHEMISTRY: all reactions negative; MICROSCOPY: epihymenium is reddish & inspersed with granules;FIELD ID: unmistakable with a close look, keying in on sunken orange disks

Similar Species

Caloplaca cinnabarina also has immersed orange disks, but disks & thallus are much brighter orange, it occurs on drier rocks, & its thallus is K+ purple

Related Rare Species

None

Habitat

Streamside rocks, wet-seep edges on outcrops, on silicious rock

Life History

Saxicolous crustose lichenized fungus, photobiont Trebouxia, rarely Trentepohlia, & sometimes a mixture of the 2

Survey Recommendations

None

Range

Mostly north of the Fall Line, 1 record from Coastal Plain rocky sandhills just south of the Fall Line

Threats

Unknown

Georgia Conservation Status

Fairly 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

29 March 2022