Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981) Subkingdom Lycopodiobiotina Doweld (2001) Division †Langiophytophyta Doweld (2001) [monotypic] see Phylum Langiophytophyta Doweld (2001) Class †Langiophytopsida Doweld (2001) Order †Langiophytales Doweld (2001) [monotypic] Family †Langiophytaceae Doweld (2001) Genus †Caia Fanning, D.Edwards & J.B.Richardson (1990)