Leptosphaeriaceae, a diverse family in the order Pleosporales, is remarkable for its scleroplectenchymatous or plectenchymatous peridium cells. Four Leptosphaeriaceae species were discovered and studied during the investigation of saprobic fungi from plant substrates in China. Novel taxa were defined using multiloci phylogenetic analyses and are supported by morphology. Based on maximum likelihood (ML) and Bayesian inference (BI) analyses, these isolates represent three novel taxa and one new record within Leptosphaeriaceae. A new genus, Angularia, is introduced to accommodate Angularia xanthoceratis, with a synopsis chart for 15 genera in Leptosphaeriaceae. This study also revealed a new species, Plenodomus changchunensis, and a new record of Alternariaster centaureae-diffusae. These species add to the increasing number of fungi known from China.

Cucurbitariaceae has a high biodiversity worldwide on various hosts and is distributed in tropical and temperate regions. Woody litters collected in Changchun, Jilin Province, China, revealed a distinct collection of fungi in the family Cucurbitariaceae based on morphological and molecular data. Phylogenetic analyses of the concatenated matrix of the internal transcribed spacer (ITS) region, the large subunit (LSU) of ribosomal DNA, the RNA polymerase II subunit (rpb2), the translation elongation factor 1-alpha (tef1-α) and β-tubulin (β-tub) genes indicated that the isolates represent Allocucurbitaria and Parafenestella species based on maximum likelihood (ML), maximum parsimony (MP) and Bayesian analysis (BPP). We report four novel species: Allocucurbitaria mori, Parafenestella changchunensis, P. ulmi and P. ulmicola. The importance of five DNA markers for species-level identification in Cucurbitariaceae was determined by Assemble Species by Automatic Partitioning (ASAP) analyses. The protein-coding gene β-tub is determined to be the best marker for species level identification in Cucurbitariaceae.

Molecular barcoding and morphological characters were used to identify a new saprotrophic species in Pestalotiopsis, which was associated with senescent leaves of Eleutherococcus brachypus (Araliaceae) in Jilin Province, China. The matrix of the internal transcribed spacer (ITS) region, translation elongation factor 1-alpha (tef1-α), and β-tubulin (tub2) were used in the maximum likelihood (ML), maximum parsimony (MP) and Bayesian inference (BI) methods. The new collections formed a distinct clade with Pestalotiopsis lijiangensis. The new species differs from P. lijiangensis by its conidial length/width ratio. Detailed description and micrographs revealed that the species is unique in its olivaceous concolorous median cells and has significantly smaller conidia compared to other related species. The position of the apical appendages of Pestalotiopsis eleutherococci are distinct and are slightly shorter while the basal appendage is slightly longer compared to P. lijiangensis. Therefore, we introduce Pestalotiopsis eleutherococci as a novel species.