# New species and new records of Trechispora (Trechisporales, Basidiomycota) from Taiwan

## TL;DR

This study discovers and documents new species of the fungal genus Trechispora in Taiwan, expanding the known diversity and providing an identification key.

## Contribution

The paper introduces four new species and seven new records of Trechispora in Taiwan through morphological and phylogenetic analyses.

## Key findings

- Four new Trechispora species were described from Taiwan.
- Seven species were newly recorded in Taiwan's fungal diversity.
- The total number of Trechispora species in Taiwan was updated to 17.

## Abstract

Trechispora (Hydnodontaceae) comprises a diverse group of wood- and soil-inhabiting fungi, primarily functioning as saprotrophs, with some species forming symbiotic associations with plants and animals. Despite the recognition of over 100 species worldwide, its diversity in Taiwan remains understudied. This study presents the first comprehensive taxonomic revision of Trechispora in Taiwan, integrating morphological and phylogenetic analyses based on sequence data from the nuc rDNA internal transcribed spacer ITS1-5.8S-ITS2 (ITS) region and the nuc 28S rDNA (28S).

We describe four new species (Trechispora acerosa, T. floralis, T. formosana, and T. orchidophila) and report seven newly recorded species for Taiwan (T. crystallina, T. dentata, T. latehypha, T. mollusca, T. odontioidea, T. subsinensis, and T. wenshanensis). T. sinensis is synonymized under T. odontioidea. Morphological and phylogenetic analyses support their taxonomic placements, and an identification key to accepted Trechispora species in Taiwan is provided.

This study expands the known diversity of Trechispora in Taiwan to 17 species, highlighting their ecological significance and potential interactions with plants in Taiwan’s forest ecosystems.