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During a survey of freshwater fungi in Guizhou Province, China, six hyphomycetous collections were founded on decaying wood from freshwater habitats. These taxa were characterized and identified based on morphology, phylogeny, and culture characteristics. Phylogenetic analysis of combined LSU, SSU, ITS, <i>RPB2</i> and <i>TEF1α</i> sequence data indicated that our six isolates formed three distinct lineages and were distributed within Fuscosporellaceae and Savoryellaceae. They can be organized as three new species: <i>Fuscosporella guizhouensis</i>, <i>Mucispora</i><i>aquatica</i> and <i>Neoascotaiwania</i><i>guizhouensis</i>. <i>Fuscosporella guizhouensis</i> and <i>Neoascotaiwania guizhouensis</i> have sporodochial conidiomata, micronematous conidiophores and dark brown conidia. The former possesses irregularly ellipsoidal conidia with apical appendages, while the latter has fusiform to obovoid conidia. <i>Mucispora aquatica</i> is characterized by macronematous conidiophores, elongating percurrently and dark brown, narrowly obovoid conidia. The detailed, illustrated descriptions and notes for each new taxon are provided, and the species of <i>Fuscosporella</i> is reported for the first time in China.