Five new species, two new sexual morph reports, and one new geographical record of Apiospora (Amphisphaeriales, Sordariomycetes) isolated from bamboo in Yunnan, China

<i>Apiospora</i> is an important genus in the Apiosporaceae family with a worldwide distribution. They exhibit different lifestyles including pathogenic, saprophytic, and endophytic. In this study, we aimed to explore the <i>Apiospora</i> associated with bamboo and collected 14 apiospora-like taxa from the forests of Yunnan Province, China. Morphological and phylogenetic analyses (combined ITS, LSU, <i>tef</i>1-<i>α</i>, and <i>tub</i>2 sequence data) confirmed that these collections belong to Apiospora s. str. and reports five new species (viz., <i>Ap. dehongensis, Ap. jinghongensis, Ap. shangrilaensis, Ap. zhaotongensis</i>, and <i>Ap. zhenxiongensis</i>). New sexual morphs of asexually typified <i>Ap. globose</i> and <i>Ap. guangdongensis</i> species, and a new geographical record of <i>Ap. subglobosa</i> are also reported. The findings of this study not only enhance the diversity of bambusicolous fungi in the region of Yunnan, but also geographical distribution of some known <i>Apiospora</i> species.