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 Zosterales Nakai (1943) see Order Alismatales R.Br. ex Bercht. & J.Presl (1820) Family Zosteraceae Dumort. (1829), nom. cons. 1 Genus Zostera L. (1753) 2 Genus Heterozostera (W.A. Setchell) C. den Hartog (1970) see Genus Zostera L. (1753) 3 Genus Phyllospadix Hook. (1838)