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30 May 2013 Myriochapsa and Nitidochapsa, two new genera in Graphidaceae (Ascomycota: Ostropales) for chroodiscoid species in the Ocellularia clade
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Abstract

Two new genera, Myriochapsa M. Cáceres, Lücking & Lumbsch and Nitidochapsa Parnmen, Lücking & Lumbsch, are introduced for the species Chapsa psoromica and C. leprieurii, which are not genuine Chapsa species but related to Myriotrema and Ocellularia, respectively. The following two new combinations are proposed: Myriochapsa psoromica (M. Cáceres, Santos de Jesus & Santos Vieira) M. Cáceres, Lücking & Lumbsch comb. nov., and Nitidochapsa leprieurii (Mont.) Parnmen, Lücking & Lumbsch comb. nov. Myriochapsa psoromica is morphologically and chemically similar to Myriotrema species but differs in the wider apothecial pore with fissured-lobulated margin; it is known only from the western Amazon (Brazil: Rondônia). Nitidochapsa leprieurii is characterized by a brown, nitidous thallus and Chapsa-like apothecia with wide, pruinose disc and lobulate to recurved, felty, white margin; it has brown ascospores and lacks secondary compounds. The species is pantropical. The interpretation of phenotype characters in a molecular phylogenetic framework is discussed.

The American Bryological and Lichenological Society, Inc.
Sittiporn Parnmen, Marcela E. S. Cáceres, Robert Lücking, and H. Thorsten Lumbsch "Myriochapsa and Nitidochapsa, two new genera in Graphidaceae (Ascomycota: Ostropales) for chroodiscoid species in the Ocellularia clade," The Bryologist 116(2), 127-133, (30 May 2013). https://doi.org/10.1639/0007-2745-116.2.127
Received: 1 March 2013; Accepted: 1 April 2013; Published: 30 May 2013
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