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Lecanora hybocarpa (Tuck.) Brodo
Bumpy Rim

Photo © Don Hunter, Troup Co., Ga., 11 May 2014
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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:

Element Occurrences (EOs) in Georgia: 0

Habitat Summary for element in Georgia: Woodlands, forests


Description

Pale green thallus smooth to verrucose; disks ranging from pale tan to dark brown, with variable beaded rims; disks fairly small, 0.5-1 mm in diameter; CHEMISTRY: thallus K+ yellow; MICROSCOPY: upper hymenium inspersed with fine crystals between paraphyses, amphithecium with large crystals; FIELD ID: dissection & chemical tests needed to confirm ID

Similar Species

Other bark Lecanora with brown disks, including: L. chlarotera usually has puffy white rims (especially when young), lightly dusted apothecia, & lacks fine crystals in upper hymenium;  L. cinereofusca has PD+ orange disks; L. louisianae has C+ orange disks; L. allophana also lacks fine crystals in upper hymenium & has small crystals in amphithecium

Related Rare Species

None

Habitat

In all habitats with hardwoods; substrates: mostly hardwood bark: 32% Quercus, 15% Acer, 6% Liquidambar, & 44% other hardwoods or unknowns; conifer bark: 5 records from Taxodium & 1 from Juniperus

Life History

Corticolous crustose lichenized fungus, photobiont a unicellular green alga (Pseudotrebouxia)

Survey Recommendations

None

Range

Statewide

Threats

Unknown

Georgia Conservation Status

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

17 April 2022