angiosperms - flowering plants see Subclass Magnoliidae Novák ex Takht. (1967)
   monocots see Clade Monocotyledoneae de Candolle 1817 [Judd, Soltis, Soltis & Graham 2020]
     Order Alismatales R.Br. ex Bercht. & J.Presl (1820)
       01 Family Alismataceae Vent. (1799), nom. cons. - water-plantain family
       02 Family Aponogetonaceae Planch. (1856), nom. cons. - Cape-pondweed family
       03 Family Araceae Juss. (1789), nom. cons. - Arum family
       04 Family Butomaceae Mirb. (1804), nom. cons. - flowering rush family
       05 Family Cymodoceaceae Vines (1895), nom. cons. - Cymodocea family
       06 Family Hydrocharitaceae Juss. (1789), nom. cons. - tape-grass family
       07 Family Juncaginaceae Rich. (1808), nom. cons. - arrow-grass family
       08 Family Limnocharitaceae Takht. ex Cronquist (1981) - water-poppy family see Family Alismataceae Vent. (1799), nom. cons.
       09 Family Posidoniaceae Vines (1895), nom. cons.
       10 Family Potamogetonaceae Bercht. & J.Presl (1823), nom. cons. - pondweed family
       11 Family Ruppiaceae Horan. (1834), nom. cons. - ditch-grass family
       12 Family Scheuchzeriaceae F.Rudolphi (1830), nom. cons.
       13 Family Tofieldiaceae Takht. (1995)
       14 Family Zosteraceae Dumort. (1829), nom. cons.