Kingdom Fungi R.T.Moore (1980) - fungi
   Phylum Chytridiomycota Doweld (2001)
     Class Chytridiomycetes Moebius (1929)
       Genus Truittella Karling (1949), incertae sedis [monotypic]
         1 Truittella setiferaᵀ Karling (1949)