Domain Eucaryota Subdomain Chlorota Doweld (2001) Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981) Subkingdom Bryobiotina Campb. (1890) Phylum Anthocerotophyta Stotler & Crand.-Stotl. (1977) - hornworts see Subphylum Anthocerotophytina Doweld (2001) A Subphylum Jungermanniophytina Doweld (2001) B Subphylum Anthocerotophytina Doweld (2001) [monotypic] - hornworts