Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct. Class Liliopsida Batsch (1802) see Class Magnoliopsida Brongn. (1843) Subclass Alismatidae Takht. (1967) see Order Alismatales R.Br. ex Bercht. & J.Presl (1820) Superorder Alismatanae Takht. (1967) see Order Alismatales R.Br. ex Bercht. & J.Presl (1820) Order Najadales Bercht. & J.Presl (1820) see Order Alismatales R.Br. ex Bercht. & J.Presl (1820) Family Najadaceae Juss. (1789), nom. cons. - water-nymph family see Subfamily Hydrilloideae 1 Genus Najas L. (1753)