Three novel species and a new record of Pleosporales (Didymellaceae, Roussoellaceae) from China.

We are investigating saprobic Ascomycota in Guizhou Province, China. Fungal specimens collected from dead wood were identified based on morphological characteristics and multi-gene phylogenetic analyses of ITS, SSU, LSU, , , and sequence data. Three novel species, , , and , are introduced, along with one new geographical record, .

caused leaf spot disease in Bayberry in Guizhou, China.

Bayberry (Myrica rubra) is one of the most important fruit in China. In July 2023, circular leaf spots were noted on spring bayberry (cv. Dongkui Arbutus) tree planted in Guanshanhu, Guiyang, Guizhou, China (26°37'3"N，106°39'59"E).