Hydrocharitaceae Juss.

Anacharis Rich. = Elodea Michx.
Apalanthe Planch.
Appertiella C.D.K.Cook & Triest
Benedictaea Toledo = Ottelia Pers.
Blyxa Noronha ex Thouars
Boottia Wall. = Ottelia Pers.
Egeria Planch.
Elodea Michx.
Enhalus Rich.
Enhydrias Ridl.
Halophila Thouars
Hydrilla Rich.
Hydrocharis L.
Hydromystria G.Mey. = Limnobium Rich.
Lagarosiphon Harv.
Limnobium Rich.
Maidenia Rendle
Najas L.
Nechamandra Planch.
Oligolobos Gagnep.
Ottelia Pers.
Stratiotes L.
Thalassia Banks ex C.Koenig
Udora Nutt. = Elodea Michx.
Vallisneria L.
Xystrolobus Gagnep. = Ottelia Pers.