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Pyrenula mamillana (Ach.) Trevisan
Big Pox
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: Swamps and mesic hardwood forests
Tan to olive thallus with large, low-profile black perithecia (0.7-1.5 mm in diameter) solitary or in small groups, with apical ostioles; MICROSCOPY: hymenium inspersed with oil droplets, spores brown, 4-celled, with a layer (sometimes thin) of endospore between 2 terminal cells & cell walls at spore tips, spores 15-21 x 5-8 µm; FIELD ID: dissection recommended
Pyrenula pseudobufonia can be similar, but its warts are smaller & more conical, & its thallus is UV+ yellow; P. punctella has a grayer thallus & much larger spores, & its warts have at least some thalline covering at base
None
Swamps & mesic hardwood forests, on hardwood bark
Corticolous crustose lichenized fungus, photobiont an alga in Trentepohlia
None
Coastal Plain (mostly along coast)
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.
Harris, R. C. 1995. More Florida lichens including the 10-cent tour of the pyrenolichens. Unpublished manuscript, Bronx, N.Y.
Malcolm Hodges
5 August 2022