Reappraisal of the genera of Megalosporaceae (Teloschistales, Ascomycota)

The status of the genera of the lichen-forming fungal family Megalosporaceae is re-examined. DNA-sequence data utilising three loci and anatomical observations pertaining to the hymenium, asci and ascospores support Megaloblastenia as a distinct genus. Austroblastenia is not supported by molecular, morphological or anatomical data, which suggest that it should be subsumed within Megalospora. Consequently, the new combinations, Megalospora pauciseptata (Shirley) Kantvilas & Lumbsch and M. pupa (Sipman) Kantvilas & Lumbsch, are proposed.