| Parent | Category | Figures | |
|---|---|---|---|
| 1 | Hydrocharitaceae | Elodea | 250 |
| 2 | Hydrocharitaceae | Hydrocharis | 171 |
| 3 | Hydrocharitaceae | Najas | 159 |
| 4 | Hydrocharitaceae | Vallisneria | 135 |
| 5 | Hydrocharitaceae | Hydrilla | 107 |
| 6 | Hydrocharitaceae | Thalassia | 107 |
| 7 | Hydrocharitaceae | Egeria | 61 |
| 8 | Hydrocharitaceae | Ottelia | 42 |
| 9 | Hydrocharitaceae | Limnobium | 31 |
| 10 | Hydrocharitaceae | Lagarosiphon | 29 |
| 11 | Hydrocharitaceae | Halophila | 27 |
| 12 | Hydrocharitaceae | Enhalus | 25 |
| 13 | Hydrocharitaceae | Blyxa | 2 |