Kingdom Fungi R.T.Moore (1980) - fungi
   Phylum Blastocladiomycota T.Y. James (2007)
     Class Blastocladiomycetes Doweld (2001)
       1 Order Blastocladiales H.E. Petersen (1909)
       2 Order Catenomycetales Doweld (2014) [monotypic]
       3 Order Callimastigales Doweld (2014)
       4 Genus Microallomyces R. Emers. & J.A. Robertson (1974), incertae sedis