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 Magnoliopsida Brongn. (1843) Subclass Nymphaeidae J.W. Walker ex Takht. (1997) [monotypic] see Order Nymphaeales Salisb. ex Bercht. & J.Presl (1820) Superorder Nymphaeanae Thorne ex Reveal (1992) Order Hydropeltidales Spenn. (1834) see Order Nymphaeales Salisb. ex Bercht. & J.Presl (1820) Family Cabombaceae Rich. ex A.Rich. (1822), nom. cons. - water-shield family