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Parmeliella appalachensis P.M. J?rg.
Appalachian Shingle
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: None
Element Occurrences (EOs) in Georgia: 0
Habitat Summary for element in Georgia: Mesic hardwood forests
Gray to brown thallus, lobes about 0.5-1 mm wide, inner thallus covered with minute lobules (see photo below); lower surface mostly attached, without a cortex; thallus rimmed by conspicuous fuzzy black prothallus, sometimes with a thin white edge; apothecia not seen; FIELD ID: measuring lobe width could help avoid confusion with Parmeliella pannosa; see Similar Species
Parmeliella pannosa is more restricted to Coastal Plain habitats & has thicker, dark-brown lobules & broader lobes; P. triptophylla is grayer & isidiate
None
Mesic hardwood forests, mostly on hardwood bark, about half Quercus, & 1 record from rock in waterfall spray zone
Corticolous, minutely foliose or squamulose lichenized fungus, photobiont a cyanobacterium in Nostoc
None
Statewide, but most records in Southern Blue Ridge
Unknown
Uncommon
None
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.
Tripp, E. A. & J. C. Lendemer. 2020. Field guide to the lichens of Great Smoky Mountains National Park. The University of Tennessee Press, Knoxville.
Malcolm Hodges
16 May 2022
