plants Haeckel (1866) - plants
   Division Charophyta Migula (1889) - charophyte algae and embryophytes see charophytes
     Subdivision [Streptophytina] see [unranked] Streptophytina Lewis & McCourt (2004)
       Class Equisetopsida C.Agardh (1825) - horsetails see Subclass Equisetidae Warm. (1883)
         Vascular Plants see Phylum Tracheophyta Sinnott ex Caval.-Sm. (1998)
           [Seed-Plants; Spermatophyta]
             Subclass Magnoliidae Novák ex Takht. (1967) - angiosperms
               Monocotyledons see Superorder Lilianae Takht. (1967)
                 Order Alismatales R.Br. ex Bercht. & J.Presl (1820)
                   01 Family Araceae Juss. (1789), nom. cons. - Arum family
                   02 Family Tofieldiaceae Takht. (1995)
                   03 Family Alismataceae Vent. (1799), nom. cons. - water-plantain family
                   04 Family Butomaceae Mirb. (1804), nom. cons. - flowering rush family
                   05 Family Hydrocharitaceae Juss. (1789), nom. cons. - tape-grass family
                   06 Family Scheuchzeriaceae F.Rudolphi (1830), nom. cons.
                   07 Family Aponogetonaceae Planch. (1856), nom. cons. - Cape-pondweed family
                   08 Family Juncaginaceae Rich. (1808), nom. cons. - arrow-grass family
                   09 Family Maundiaceae Nakai (1943)
                   10 Family Zosteraceae Dumort. (1829), nom. cons.
                   11 Family Potamogetonaceae Bercht. & J.Presl (1823), nom. cons. - pondweed family
                   12 Family Posidoniaceae Vines (1895), nom. cons.
                   13 Family Ruppiaceae Horan. (1834), nom. cons. - ditch-grass family
                   14 Family Cymodoceaceae Vines (1895), nom. cons. - Cymodocea family