Revision of the <i>Massarineae</i> (<i>Pleosporales</i>, <i>Dothideomycetes</i>)

<jats:p>We here taxonomically revise the suborder <jats:italic>Massarineae</jats:italic> (<jats:italic>Pleosporales</jats:italic>, <jats:italic>Dothideomycetes</jats:italic>, <jats:italic>Ascomycota</jats:italic>). Sequences of SSU and LSU nrDNA and the translation elongation factor 1-alpha gene (<jats:italic>tef1</jats:italic>) are newly obtained from 106 <jats:italic>Massarineae</jats:italic> taxa that are phylogenetically analysed along with published sequences of 131 taxa in this suborder retrieved from GenBank. We recognise 12 families and five unknown lineages in the <jats:italic>Massarineae</jats:italic>. Among the nine families previously known, the monophyletic status of the <jats:italic>Dictyosporiaceae</jats:italic>, <jats:italic>Didymosphaeriaceae</jats:italic>, <jats:italic>Latoruaceae</jats:italic>, <jats:italic>Macrodiplodiopsidaceae</jats:italic>, <jats:italic>Massarinaceae</jats:italic>, <jats:italic>Morosphaeriaceae</jats:italic>, and <jats:italic>Trematosphaeriaceae</jats:italic> was strongly supported with bootstrap support values above 96 %, while the clades of the <jats:italic>Bambusicolaceae</jats:italic> and the <jats:italic>Lentitheciaceae</jats:italic> are moderately supported. Two new families, <jats:italic>Parabambusicolaceae</jats:italic> and <jats:italic>Sulcatisporaceae</jats:italic>, are proposed. The <jats:italic>Parabambusicolaceae</jats:italic> is erected to accommodate <jats:italic>Aquastroma</jats:italic> and <jats:italic>Parabambusicola</jats:italic> genera nova, as well as two unnamed <jats:italic>Monodictys</jats:italic> species. The <jats:italic>Parabambusicolaceae</jats:italic> is characterised by depressed globose to hemispherical ascomata with or without surrounding stromatic tissue, and multi-septate, clavate to fusiform, hyaline ascospores. The <jats:italic>Sulcatisporaceae</jats:italic> is established for <jats:italic>Magnicamarosporium</jats:italic> and <jats:italic>Sulcatispora</jats:italic> genera nova and <jats:italic>Neobambusicola</jats:italic>. The <jats:italic>Sulcatisporaceae</jats:italic> is characterised by subglobose ascomata with a short ostiolar neck, trabeculate pseudoparaphyses, clavate asci, broadly fusiform ascospores, and ellipsoid to subglobose conidia with or without striate ornamentation. The genus <jats:italic>Periconia</jats:italic> and its relatives are segregated from the <jats:italic>Massarinaceae</jats:italic> and placed in a resurrected family, the <jats:italic>Periconiaceae</jats:italic>. We have summarised the morphological and ecological features, and clarified the accepted members of each family. Ten new genera, 22 new species, and seven new combinations are described and illustrated. The complete ITS sequences of nrDNA are also provided for all new taxa for use as barcode markers.</jats:p>