Aponogetonaceae family accepted

Juncaginaceae family accepted

Posidoniaceae family accepted

Anacharis oryzoides (Swartz) Stapf species synonym

Potamogetonaceae family accepted

Najadaceae family synonym

Lemnaceae family accepted

Araceae family accepted

Butomaceae family accepted

Limnocarpus C.Reid, 1898 genus accepted

Wackersdorfia Peters, 1963 genus accepted

Frimmersdorfia Weyland, 1959 genus accepted

Helobiaephyllum L.Rüffle, 1963 genus doubtful

Marcoduria Weyland, 1957 genus accepted

Pistiaceae family synonym

Thalassiaceae family synonym

Halophilaceae family synonym

Maundiaceae family accepted

Orontiaceae family synonym

Dracontiaceae family synonym

Arisaraceae family synonym

Callaceae family synonym

Cryptocorynaceae family synonym

Wolffiaceae family synonym

Caladiaceae family synonym

Damasoniaceae family synonym

Enhalaceae family synonym

Vallisneriaceae family synonym

Blyxaceae family synonym

Elodeaceae family synonym

Stratiotaceae family synonym

Triglochinaceae family synonym

Limnocharitaceae family accepted

Alismataceae family accepted

Hydrocharitaceae family accepted

Ruppiaceae family accepted

Scheuchzeriaceae family accepted

Tofieldiaceae family accepted

Zosteraceae family accepted

Lilaeaceae family synonym

Scheuzeriaceae family synonym

Zannichelliaceae family synonym

Monsteraceae family synonym

Cymodoceaceae family accepted

Heterostylaceae family synonym

Hydrogetonaceae family synonym

Hydrillaceae family synonym

Lasiaceae family synonym

Philodendraceae family synonym

Pothaceae family synonym

Colocasiaceae family synonym

Najadeae family synonym

Pennipollis Friis, 2000 genus accepted

Thalassocharis Debey, 1850 genus accepted