| Parent | Category | Figures | |
|---|---|---|---|
| 1 | Hydrangeaceae | Hydrangea | 2595 |
| 2 | Hydrangeaceae | Philadelphus | 530 |
| 3 | Hydrangeaceae | Whipplea | 280 |
| 4 | Hydrangeaceae | Deutzia | 130 |
| 5 | Hydrangeaceae | Fendlera | 95 |
| 6 | Hydrangeaceae | Carpenteria | 69 |
| 7 | Hydrangeaceae | Jamesia | 17 |
| 8 | Hydrangeaceae | Kirengeshoma | 4 |
| 9 | Hydrangeaceae | Fendlerella | 2 |