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Punctelia caseana Lendemer & Hodkinson
Powdered Speckled Shield; Forest Speckleback
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: Pine – hardwood woodlands, hardwood forests
Pale to medium green foliose thallus, some with brown edges, lobes 2-6 mm wide, dotted with pale maculae & sometimes-sparse white pseudocyphellae; white mounded soralia form on older surfaces & margins of lobes, with fine white soredia; undersides brown; CHEMISTRY: medulla KC+, C+ red (lecanoric acid); FIELD ID easy with a careful look to eliminate congeners
Punctelia missouriensis can look superficially similar but its soralia contain a few coarse, corticate soredia
Punctelia appalachensis
Pine – hardwood woodlands, hardwood forests; substrates: conifer bark: 13 records on Pinus, 2 on Tsuga; hardwood bark: 5 records on Quercus, 9 on other hardwoods or unknowns; 2 records on silicious rock
Corticolous foliose lichenized fungus, photobiont a green alga (Trebouxia?)
None
Cumberland Plateau, Ridge & Valley, Southern Blue Ridge; rare in Piedmont
Unknown
Uncommon to fairly common
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.
Malcolm Hodges
5 August 2022