Amphibambusa fangchenggangensis sp. nov., Am. yunnanensis sp. nov., and Arecophila viscosa sp. nov. (Xylariales, Cainiaceae) associated with bamboo from southwest China

Abstract

During an ongoing investigation of bambusicolous fungi within the Xylariomycetidae, three microfungal specimens belonging to the family Cainiaceae were collected from southern China. Based on detailed morphological observations and phylogenetic analyses of combined internal transcribed spacer (ITS) and large subunit ribosomal RNA (LSU) sequence data, these collections were identified as two new species of Amphibambusa, namely Amphibambusa fangchenggangensis and Am. yunnanensis, and one new species of Arecophila, Ar. viscosa.

Comprehensive descriptions, micrographs, and a phylogenetic tree of the new species are provided, highlighting bamboo forests as a rich reservoir of fungal diversity.