Scientists surveying freshwater streams in Jiangxi Province, China discovered four fungal species new to the region. Three of these species had never been described before, while one was recorded in China for the first time. Using both microscope observations and DNA analysis, researchers confirmed these findings and classified them within the fungal families Pleurotheciaceae and Pseudodactylariaceae. These discoveries demonstrate how much fungal diversity still remains undiscovered in freshwater ecosystems.