Macrofungi remain underexplored in various regions of the world. Because macrofungi play an important role in terrestrial ecosystems, it is essential to investigate their biodiversity in such regions. In this study, we aimed to comprehensively investigate the macrofungal diversity of Taebaeksan National Park, South Korea. We sampled macrofungi from the park in 2023 and conducted detailed morphological observations and molecular analyses of the internal transcribed spacer (ITS) region of ribosomal DNA. Our analysis revealed six previously unknown species: Cortinarius iliopodius, Cotylidia fibrae, Fulvoderma australe, Lyophyllum infumatum, Russula velenovskyi, and Strobilomyces cingulatus. Herein, we provide detailed morphological descriptions, high-resolution photographs, and molecular phylogenetic analyses to support the taxonomic placement and identification of these taxa. Our findings enable a more comprehensive understanding of macrofungal biodiversity in this region.

ABSTRACT
INTRODUCTION
MATERIALS AND METHODS
    Sampling and morphological examination
    DNA extraction, polymerase chain reaction (PCR), andphylogenetic analyses
RESULTS
    Phylogenetic analysis
    Taxonomy
DISCUSSION
CONFLICTS OF INTERESTS
ACKNOWLEGEMENTS
REFERENCES

• Sung-Eun Cho(Institute of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea)
• Keum Chul Shin(Institute of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea, Department of Forest Environmental Resources, Gyeongsang National University, Jinju 52828, Republic of Korea)
• Yong Ho Kim(Department of Environment and Forest Resources, Chungnam National University, Daejeon 34134, Republic of Korea)
• Dong-Hyeon Lee(Department of Environment and Forest Resources, Chungnam National University, Daejeon 34134, Republic of Korea)
• Changmu Kim(Species Diversity Research Division, National Institute of Biological Resources, Incheon 22689, Republic of Korea) Corresponding author
• Nam Kyu Kim(Department of Forest Healing, College of Human service, Catholic Kwandong University, Gangneung 25601, Republic of Korea)