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Pyxine albovirens (G. Meyer) Aptroot
Pompon Mustard-rosette
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: Hardwood forests (mostly mesic), swamps
Pale green to gray-green thallus of branching lobes, 0.5-1.3 mm wide, with sparse white maculae often at lobe angles; mounded whitish-green soralia at edges and on lobe surfaces; medulla light mustard-yellow, undersides black; CHEMISTRY: cortex UV+ yellow (lichexanthone), medulla K+ violet; FIELD ID possible with field UV test, noting mounded soralia, wavy lobes & lack of pruina
Pyxine subcinerea is flatter, with marginal soralia & usually white patches of pruina at lobe tips
None
Hardwood forests (mostly mesic), swamps; substrates: hardwood bark: 47% Quercus, 13% Acer & 28% other hardwoods or unknowns; conifer bark: 3 records on Pinus & 1 each on Juniperus & Taxodium; 1 record on moss over bark, & 2 on silicious rock
Corticolous foliose lichenized fungus, photobiont a unicellular green alga
None
Statewide in lowlands, not on Cumberland Plateau or Southern Blue Ridge
Unknown
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.
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 Unpublished manuscript, Bronx, N.Y.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