Taxonomic and phylogenetic characterisations of six species of Pleosporales (in Didymosphaeriaceae, Roussoellaceae and Nigrogranaceae) from China.

Pleosporales comprise a diverse group of fungi with a global distribution and significant ecological importance. A survey on Pleosporales (in Didymosphaeriaceae, Roussoellaceae and Nigrogranaceae) in Guizhou Province, China, was conducted. Specimens were identified, based on morphological characteristics and phylogenetic analyses using a dataset composed of ITS, LSU, SSU, tef 1 and rpb 2 loci. Maximum Likelihood (ML) and Bayesian analyses were performed. As a result, three new species ( Neokalmusiakarka , Nigrogranaschinifolium and N.trachycarpus ) have been discovered, along with two new records for China ( Roussoellaneopustulans and R.doimaesalongensis ) and a known species ( Roussoellapseudohysterioides ). Morphologically similar species and phylogenetically close taxa are compared and discussed. This study provides detailed information and descriptions of all newly-identified taxa.