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Opegrapha vulgata Ach.
Common Scribble

Photo © Malcolm Hodges, from a specimen collected in Catoosa Co., 17 November 2013
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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: Mesic hardwood forest, bottomland hardwood


Description

Grayish-white, matte, continuous thallus with bold, sessile lirellae; disks mostly hidden, black labia large, puffy, with rough surface, sometimes cracked; lirellae long, scattered (not dense); MICROSCOPY: spores 6-celled, colorless, widest part off-center; FIELD ID not possible, dissection required

Similar Species

Of the Opegrapha-type lichens with long, black, closed lirellae, O. candida has 4-celled spores & Zwackhia viridis has slightly smaller, more cracked lirellae, a darker brown or green thallus & 12-14-celled banana-shaped spores

Related Rare Species

None

Habitat

Mesic hardwood forest, bottomland hardwood; substrates: hardwood bark: 26% Quercus, 21% Acer, 17% Carya & 33% other hardwoods or unknowns; 1 record on Taxodium bark

Life History

Corticolous crustose lichenized fungus, photobiont an alga in Trentepohlia

Survey Recommendations

None

Range

Statewide

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.

Harris, R. C. 1995. More Florida lichens including the 10-cent tour of the pyrenolichens. Unpublished manuscript, Bronx, N.Y.

Tripp, E. A. & J. C. Lendemer. 2020. Field guide to the lichens of Great Smoky Mountains National Park. The University of Tennessee Press, Knoxville.

Authors of Account

Malcolm Hodges

Date Compiled or Updated

11 May 2022