Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Subkingdom Bryobiotina Campb. (1890)
     Division Marchantiophyta Stotler & Crand.-Stotl. (2000) see Phylum Marchantiophyta Stotler & Crand.-Stotl. (2000)
       Class Jungermanniopsida Stotler & Crand.-Stotl. (1977) - leafy liverworts
         Subclass Jungermanniidae Engl. (1893)
           Order Jungermanniales H. Klinggr.
             Suborder Jungermanniineae R.M. Schust. ex Stotler & Crand.-Stotl.
               Family Arnelliaceae Nakai
                 1 Genus Arnellia Lindb. (1887)
                 2 Genus Gongylanthus Nees (1836)
                 3 Genus Southbya Spruce (1849)
                 4 Genus Stephaniella J.B. Jack
                 5 Genus Stephaniellidium S. Winkl. ex Grolle