| Alismataceae | !! |
Alismataceae
| Vent. | Tabl. Regn. Veg. 2: 157 | 1799 |
| Aponogetonaceae | !! |
Aponogetonaceae
| Planch. | Bot. Mag. 82: sub pl. 4894 | 1856 |
| Araceae | !! |
Araceae
| Juss. | Gen. Pl. 23 | 1789 |
| Blyxaceae | |
Blyxaceae
| Nakai | J. Jap. Bot. 24: 14 | 1949 |
| Butomaceae | !! |
Butomaceae
| Mirb. | Hist. Nat. Pl. 8: 194 | 1804 |
| Caladiaceae | |
Caladiaceae
| Salisb. | Gen. Pl. 5 | 1866 |
| Callaceae | |
Callaceae
| Rchb. ex Bartl. | Ord. Nat. Pl. 25, 66 | 1830 |
| Cryptocorynaceae | |
Cryptocorynaceae
| J. Agardh | Theoria Syst. Pl. 32 | 1858 |
| Cymodoceaceae | !! |
Cymodoceaceae
| Vines | Stud. Text-book Bot. 553 | 1895 |
| Damasoniaceae | |
Damasoniaceae
| Nakai | Chosakuronbun Mokuroku 213 | 1943 |
| Dracontiaceae | |
Dracontiaceae
| Salisb. | Gen. Pl. 7 | 1866 |
| Elodeaceae | |
Elodeaceae
| Dumort. | Anal. Fam. Pl. 54 | 1829 |
| Enhalaceae | |
Enhalaceae
| Nakai | Chosakuronbun Mokuroku 210, 211 | 1943 |
| Halophilaceae | |
Halophilaceae
| J. Agardh | Theoria Syst. Pl. 50 | 1858 |
| Heterostylaceae | |
Heterostylaceae
| Hutch. | Fam. Fl. Pl., Monocot. 2: 41 | 1934 |
| Hydrillaceae | |
Hydrillaceae
| Prantl | Lehrb. Bot., ed. 3 188 | 1879 |
| Hydrocharitaceae | !! |
Hydrocharitaceae
| Juss. | Gen. Pl. 67 | 1789 |
| Hydrogetonaceae | |
Hydrogetonaceae
| Link | Handbuch 1: 282 | 1829 |
| Juncaginaceae | !! |
Juncaginaceae
| Rich. | Démonstr. Bot. 9 | 1808 |
| Lemnaceae | !! |
Lemnaceae
| Martinov | Tekhno-Bot. Slovar. 362 | 1820 |
| Lemnaceae | |
Lemnaceae
| Gray | Nat. Arr. Brit. Pl. 2: 729 | 1821 [1822] |
| Lilaeaceae | !! |
Lilaeaceae
| Dumort. | Anal. Fam. Pl. 62, 65 | 1829 |
| Limnocharitaceae | |
Limnocharitaceae
| Takht. ex Cronquist | Integr. System Classific. 1048 | 1981 |
| Maundiaceae | |
Maundiaceae
| Nakai | Chosakuronbun Mokuroku 213 | 1943 |
| Najadaceae | !! |
Najadaceae
| Juss. | Gen. Pl. 18 | 1789 |
| Orontiaceae | |
Orontiaceae
| Bartl. | Ord. Nat. Pl. 24, 68 | 1830 |
| Pistiaceae | |
Pistiaceae
| Rich. ex C. Agardh | Aphor. Bot. 130 | 1822 |
| Posidoniaceae | !! |
Posidoniaceae
| Vines | Stud. Text-book Bot. 553 | 1895 |
| Potamogetonaceae | !! |
Potamogetonaceae
| Bercht. & J. Presl | Prir. Rostlin 1(7): [1], 3 | 1823 |
| Pothaceae | |
Pothaceae
| Raf. | Fl. Tellur. 4: 16 | 1838 |
| Ruppiaceae | !! |
Ruppiaceae
| Horan. | Prim. Lin. Syst. Nat. 46 | 1834 |
| Scheuchzeriaceae | !! |
Scheuchzeriaceae
| F. Rudolphi | Syst. Orb. Veg. 28 | 1830 |
| Stratiotaceae | |
Stratiotaceae
| Schultz Sch. | Nat. Syst. Pflanzenr. 274 | 1832 |
| Thalassiaceae | |
Thalassiaceae
| Nakai | Chosakuronbun Mokuroku 210 | 1943 |
| Tofieldiaceae | |
Tofieldiaceae
| Takht. | Bot. Zhurn. (Moscow & Leningrad) 17(12): 65 | 1995 |
| Triglochinaceae | |
Triglochinaceae
| Bercht. & J. Presl | Prir. Rostlin 7–13: 1,–2 | 1823 |
| Vallisneriaceae | |
Vallisneriaceae
| Dumort. | Anal. Fam. Pl. 54, 55 | 1829 |
| Wolffiaceae | |
Wolffiaceae
| Bubani | Fl. Pyren. 4: 22 | 1902 |
| Zannichelliaceae | !! |
Zannichelliaceae
| Chevall. | Fl. Gén. Env. Paris 2: 256 | 1827 |
| Zosteraceae | !! |
Zosteraceae
| Dumort. | Anal. Fam. Pl. 65–66 | 1829 |