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  • Taxonomic innovations in Megasporaceae (lichenized Ascomycota, Pertusariales): Antidea, a new genus for Aspicilia brucei; two new species of Aspicilia, and new combinations in Aspilidea and Lobothallia

  • Tim Wheeler, John McCarthy, Björn Owe-Larsson, Alan Fryday
  • Journal:
    The Lichenologist / Volume 56 / Issue 5 / September 2024
    Published online by Cambridge University Press:
    12 December 2024, pp. 273-286
    Print publication:
    September 2024
    • Article
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  • We present a robust, five-locus phylogeny of the Megasporaceae and, based on this, propose several taxonomic innovations. The new genus Antidea is erected for Aspicilia brucei, which occupies a position near the base of the phylogeny, and the new species Aspicilia indeterminata and A. suavis are described from Montana. We also show that all North American (and some European) records of Aspilidea myrinii are misidentifications with many representing a second species in the genus, differing from A. myrinii by having elevated apothecia and narrower ascospores and for which we make the new combination Aspilidea subadunans. Finally, we make the new combinations Lobothallia determinata and L. peltastictoides, and report the lichenicolous fungus Sagediopsis aspiciliae (on A. subadunans) as new to North America.