Damasonium Hill, 1753 genus synonym

Aquarius Christenh. & Byng genus accepted

Limnophytum genus doubtful

Damosonium genus synonym

Lophotocarpus T.Durand genus synonym

Cardstonia M.G.Riley & R.A.Stockey, 2004 genus doubtful

Sagisma P.A.Nikitin, 1965 genus accepted

Heleophyton D.M.Erwin & R.A.Stockey, 1989 genus doubtful

Kemia A.R.Anan'ev, 1948 genus doubtful

Radimskya C.von Ettingshausen, 1890 genus accepted

×Alismodorus H.R.Wehrh. genus doubtful

Alismaticarpum M.E.Collinson, 1983 genus doubtful

Alismataceaepites B.Biswas, 1962 genus accepted

Alismaphyllum E.W.Berry, 1911 genus accepted

Alismaphyllites Knowlton, 1917 genus accepted

Alismacites G.Saporta, 1862 genus accepted

Hydrocleis Rchb. genus synonym

Helianthum Engelm. ex Britton, 1905 genus doubtful

Wisneria Micheli, 1881 genus synonym

Plantaginastrum Heist. ex Fabr. genus synonym

Teganocharis Hochst., 1841 genus doubtful

Elattosis Gagnep. genus synonym

Helanthium (Benth. & Hook.f.) Engelm. ex J.G.Sm. genus accepted

Rautanenia Buchenau genus synonym

Baldellia Parl. genus accepted

Hydrocleys Rich. genus accepted

Sagitta Guett. genus synonym

Wiesneria Micheli genus accepted

Butomopsis Kunth genus accepted

Echinodorus Rich. ex Engelm. genus doubtful

Actinocarpus R.Br. genus synonym

Hydrolirion H.Lév. genus synonym

Diphorea Raf. genus synonym

Dipseudochorion Buchenau genus synonym

Astonia S.W.L.Jacobs genus accepted

Luronium Raf. genus accepted

Alisma L. genus accepted

Ranalisma Stapf genus accepted

Nectalisma Fourr. genus synonym

Ostenia Buchenau genus synonym

Burnatia Micheli genus accepted

Caldesia Parl. genus accepted

Drepachenia Raf. genus synonym

Tenagocharis Hochst. genus synonym

Machaerocarpus Small genus synonym

Helianthium (Engelm. ex Hook.f.) J.G.Sm. genus synonym

Lophiocarpus (Kunth) Miq. genus synonym

Elisma Buchenau genus synonym

Limnophyton Miq. genus accepted

Vespuccia Parl. genus synonym

Limnocharis Bonpl. genus accepted

Sagittaria Ruppius ex L. genus accepted

Albidella Pichon genus accepted

Echinodorus Rich. genus accepted

Helanthium Engelm. ex Benth. & Hook.f., 1883 genus doubtful

Echinodorus Rich. & Engelm. ex A.Gray genus doubtful

Sagitta Adans., 1763 genus doubtful

Michelia T.Durand genus synonym

Damasonium Mill. genus accepted