Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 23; Count: [*†*] 10p;24c;72o;262f;1685g; †5p;17c;56o;141f;593g
   Subkingdom Bryobiotina Campb. (1890)
  Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 23; Count: [*] 3p;13c;49o;201f;1309g [23 Jan 2023]
     Division Marchantiophyta Stotler & Crand.-Stotl. (2000) see Phylum Marchantiophyta Stotler & Crand.-Stotl. (2000)
    Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 23; fig. 41 (Holtz, 2014); Count: [*] 3c;15o;82f;378g [6 Jan 2023]
       Class Jungermanniopsida Stotler & Crand.-Stotl. (1977) - leafy liverworts
      Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 24; Count: [*] 8o;60f;341g [6 Jan 2023]
         Subclass Pelliidae He-Nygrén, Juslén, Ahonen, Glenny & Piippo
        Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 24; Count: [*] 3o;11f;21g [4 Jan 2023]
           Order Fossombroniales Schljakov
          Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 24; Count: [*] 5f;6g [3 Jan 2023]
             Suborder Fossombroniineae Schust. ex Stotler & Crand.-Stotl.
            Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 24; Count: [*] 3f;4g [3 Jan 2023]
               Family Petalophyllaceae Stotler & Crand.-Stotl.
              Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 24; Count: [*] 2g [3 Jan 2023]
                 Genus Petalophyllum Nees & Gottsche ex Lehm. (1844)
                Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 24; Count: -