Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Bryobiotina Campb. (1890)
     Anthocerotophyta Stotler & Crand.-Stotl. (1977) see Phylum Anthocerotophyta Stotler & Crand.-Stotl. (1977)
       Anthocerotopsida Jancz. (1872) - hornworts
         Dendrocerotidae Duff, J.C. Villarreal, Cargill & Renzaglia
           Phymatoceros Stotler, W.T.Doyle & Crand.-Stotl. (2005)