| Hydrophyllaceae | |
Draperia
| Torr. | Proc. Amer. Acad. Arts 7(2): 401 | 1868 |
| Hydrophyllaceae | !! |
Ellisia
| L. | Sp. Pl. (ed. 2) 2: 1662 | 1763 |
| Hydrophyllaceae | |
Emmenanthe
| Benth. | Trans. Linn. Soc. London 17(2): 281 | 1835 |
| Hydrophyllaceae | |
Eucrypta
| Nutt. | Proc. Acad. Nat. Sci. Philadelphia 4(1): 12–13 | 1848 |
| Hydrophyllaceae | !! |
Hesperochiron
| S. Watson | Botany (Fortieth Parallel) 281, pl. 30 | 1871 |
| Hydrophyllaceae | |
Howellanthus
| (Constance) Walden & R. Patt. | Madroño 57(4): 270 | 2010 [2011] |
| Hydrophyllaceae | |
Hydrophyllum
| L. | Sp. Pl. 1: 146 | 1753 |
| Hydrophyllaceae | !! |
Nemophila
| Nutt. | J. Acad. Nat. Sci. Philadelphia 2(1): 179–181 | 1821 |
| Hydrophyllaceae | |
Phacelia
| Juss. | Gen. Pl. 129 | 1789 |
| Hydrophyllaceae | |
Pholistoma
| Lilja | Bot. Not. 1(4): 40 | 1839 |
| Hydrophyllaceae | |
Romanzoffia
| Cham. | Horae Phys. Berol. 71–72, pl. 14 | 1820 |
| Hydrophyllaceae | * |
Steris
| L. | Syst. Nat. (ed. 12) 2: 140, 197 | 1767 |
| Hydrophyllaceae | |
Tricardia
| Torr. ex S. Watson | Botany (Fortieth Parallel) 258, pl. 24 | 1871 |
| Hydrophyllaceae | |
Viticella
| Mitch. | Diss. Brevis. Princ. Bot. 42 | 1769 |