Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Subkingdom Bryobiotina Campb. (1890)
     Division Anthocerotophyta Stotler & Crand.-Stotl. (1977) see Phylum Anthocerotophyta Stotler & Crand.-Stotl. (1977)
       Class Leiosporocerotopsida Stotler & Crand.-Stotl. [monotypic]
         Order Leiosporocerotales Hässel [monotypic]
           Family Leiosporocerotaceae Hässel ex Ochyra [monotypic]
             Genus Leiosporoceros Hässel