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Dirinaria purpurascens (Vainio) B. Moore
Purple-eyed Medallion
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: Maritime forest, mesic hardwood forest
Crowded pale-green lobes tightly adhering to substrate, dividing to fill all space as lichen grows out; flat purple disks with green rims confined to older parts of thallus (disks have a warm reddish-purple cast, not cool gray-blue-purple); no rhizines on black underside; FIELD ID: unmistakable with experience; if any question, it is likely D. confusa or D. confluens
Dirinaria confusa/D. confluens pair have purplish-blue-gray disks
None
Maritime forest, mesic hardwood forest, on hardwood bark, heavy on Quercus, Celtis & Ulmus; 1 record on Juniperus
Corticolous lichenized fungus, photobiont a green alga (Trebouxia?)
None
Coastal Plain
Unknown
Rare
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
27 July 2022