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 Anthocerotopsida Jancz. (1872) - hornworts Subclass Dendrocerotidae Duff, J.C. Villarreal, Cargill & Renzaglia Order Phymatocerotales Duff, J.C.Villarreal, Cargill & Renzaglia (2007) [monotypic] Family Phymatocerotaceae Duff, J.C. Villarreal, Cargill & Renzaglia [monotypic] Genus Phymatoceros Stotler, W.T.Doyle & Crand.-Stotl. (2005)