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Pertusaria tetrathalamia (Fee) Nyl.
False Spotted Wart
Federal Protection: No US federal protection
State Protection: No Georgia state protection
Global Rank: G3G5
State Rank: SNR
Element Locations Tracked in Biotics: No
SWAP High Priority Species (SGCN): No
Element Occurrences (EOs) in Georgia: 0
Habitat Summary for element in Georgia: In wooded habitats
Pale gray-green, continuous thallus variably lumpy, maculate; apothecia within relatively large, sloping, pale-spotted, sometimes slightly bumpy warts with 1-3 ostioles at summit, ostioles small, gray-brown, surrounded by a white border; warts sometimes merging, but typically separate from others; MICROSCOPY: spores ellipsoid, colorless, simple, roughly ornamented with radial ridges, 2-4/ascus; CHEMISTRY: medulla K+ yellow, PD+ pale orange (stictic acid), cortex UV- or + weakly pink-orange; FIELD ID tentative with UV test, but best dissected to examine spores
Pertusaria paratuberculifera has 8 unornamented spores/ascus, a K+ yellow medulla & UV+ bright yellow cortex
Pertusaria appalachensis
In wooded habitats; substrates: hardwood bark: 29% Quercus, 23% Acer, 12% Carya & 27% other hardwoods or unknowns; conifer bark: 4 records from Taxodium & 3 from Juniperus
Corticolous crustose lichenized fungus, photobiont a green alga in Trebouxia
None
Statewide, thinnest at north end
Unknown
Common, though not as frequent as Pertusaria paratuberculifera
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
7 August 2022