Addition of three new species of Xylariomycetidae fungi on bamboo from Southern China

In our ongoing research on bambusicolous Xylariomycetidae fungi, three new microfungi taxa were collected and identified as members of the genera <i>Amphibambusa</i>, <i>Arecophila</i>, and <i>Nigropunctata</i>. <i>Amphibambusaaureae</i> <b>sp. nov.</b>, <i>Arecophilagaofengensis</i> <b>sp. nov.</b>, and <i>Nigropunctataxiaohensis</i> <b>sp. nov.</b> are introduced based on morphological comparisons and phylogenetic analyses using combined ITS, LSU, <i>tub2</i>, and <i>tef</i>1α loci. Comprehensive morphological descriptions, illustrations, and a phylogenetic tree showcasing the placement of these new taxa are provided. Additionally, keys to <i>Amphibambusa</i> and <i>Nigropunctata</i> are provided.