Journal
AUSTRALIAN SYSTEMATIC BOTANY
Volume 27, Issue 1, Pages 38-47Publisher
CSIRO PUBLISHING
DOI: 10.1071/SB13040
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Funding
- National Science Foundation [DEB 0715660]
- University of Chicago (Committee on Evolutionary Biology)
- American Society of Plant Taxonomists
- Botanical Society of America
- Brown Family Fellowship through the Field Museum
- CNPq - Conselho Nacional de Desenvolvimento Cientifico e Tecnologico [Sisbiota Processo 563342/2010-2]
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The lichen-forming fungal family Myeloconidaceae, with the single genus Myeloconis, has been suggested to share affinities with Porinaceae (Lecanoromycetes: Ostropales). We examined its position relative to this family by using molecular data from the mitochondrial small-subunit and nuclear large-subunit rDNA. Our results revealed that Myeloconis forms a monophyletic group nested within Porinaceae, closely related to Porina farinosa. Neither Porina s.str. nor Clathroporina sensu Harris form monophyletic groups; instead, two strongly supported clades were recovered, which differ in ascospore septation (septate v. muriform), with the clade producing muriform ascospores including Myeloconis. We therefore reduce Myeloconidaceae to synonymy with Porinaceae; however, because generic delimitations within Porinaceae remain unclear, we retain Myeloconis as a separate genus within the family. The species concept currently used in the genus, based largely on secondary metabolites and ascospore measurements, is supported by the phylogeny.
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