Domain Eucaryota Subdomain Chlorota Doweld (2001) Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981) Subkingdom Pteridobiotina Britton & A. Br. (1896) Superphylum Cycadophytanae Doweld (2001) Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct. Subphylum Magnoliophytina Reveal (1996) Class Liliopsida Batsch (1802) see Class Magnoliopsida Brongn. (1843) Subclass Juncidae Doweld (2001) Superorder Hydatellanae Takht. ex Reveal (1992) [monotypic] see Order Nymphaeales Salisb. ex Bercht. & J.Presl (1820) Order Hydatellales Cronquist (1980) [monotypic] see Order Nymphaeales Salisb. ex Bercht. & J.Presl (1820) 1 Family Hydatellaceae U.Hamann (1976)