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Lepraria friabilis Lendemer, K. Knudsen & Elix
Friable Dust
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: Mixed mesic pine ? hardwood forests, swamps
Pale blue-gray aggregate leprose thallus (becoming white in the herbarium), scattered to continuous; granules uniformly small; rhizohyphae absent; CHEMISTRY: thallus K-/+ brownish, KC-, C-, PD+ orange-red, UV- (fumarprotocetraric acid, protocetraric acid); FIELD ID: requires chemical testing in lab
Lepraria harrisiana & L. aurescens are in same habitats (pine woods & cypress swamps, respectively), but have placodioid thalli & a consistent fringe of hyphae extending out from the edge of the thallus
None
Mixed mesic pine – hardwood forests, swamps; substrates: 10 records on Pinus bark, 4 on Taxodium bark, & 1 on Nyssa bark
Corticolous leprose lichenized fungus, photobiont a chlorococcoid green alga
None
Mostly Coastal Plain, with scattered records from Piedmont & 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.
Lendemer, J. C. 2013. A monograph of the crustose members of the genus Lepraria Ach. s. str. (Stereocaulaceae, Lichenized Ascomycetes) in North America north of Mexico. Opuscula Philolichenum 11: 27-141.
Malcolm Hodges
20 April 2022