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Chrysothrix xanthina (Vain.) Kalb
Common Gold-dust

Photo © Don Hunter, Brooks Co., Ga., 1 Feb. 2014
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Federal Protection: No US federal protection

State Protection: No Georgia state protection

Global Rank: GNR

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: In a wide variety of natural and disturbed habitats


Description

Bright yellow leprose thallus, evenly distributed to patchy, scattered thinly or thickly layered, grading to yellow-green in deep shade; CHEMISTRY: thallus K-, UV-; FIELD ID possible, with K & UV tests

Similar Species

Chrysothrix insulizans, & Chrysothrix onokoensis if on rock

Related Rare Species

None

Habitat

Forests, woodlands, disturbed areas (e.g., weathered wood of old barns); substrates: conifer bark or wood, with 34% (of all substrates) Pinus, 6% Juniperus, 4 records on Taxodium; hardwood bark or wood, 26% Quercus; 13% on silicious rock

Life History

Corticolous (lignicolous, saxicolous), leprose lichenized fungus, photobiont a green alga

Survey Recommendations

None

Range

Statewide

Threats

Unknown

Georgia Conservation Status

Common to abundant

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

11 May 2022