| Hydrangea anomala D. Don |
Accepted |
12 |
| Hydrangea arborescens L. |
Accepted |
18 |
| Hydrangea aspera D. Don |
Accepted |
18 |
| Hydrangea chinensis Maxim. |
Accepted |
18 |
| Hydrangea cinerea Small |
Accepted |
18 |
| Hydrangea heteromalla D. Don |
Accepted |
18 |
| Hydrangea hirta (Thunb.) Siebold |
Accepted |
18 |
| Hydrangea involucrata Siebold |
Accepted |
15 |
| Hydrangea macrophylla (Thunb.) Ser. |
Accepted |
18 |
| Hydrangea macrophylla subsp. serrata (Thunb.) Makino |
Accepted |
18 |
| Hydrangea paniculata Siebold |
Accepted |
36 |
| Hydrangea petiolaris Siebold & Zucc. |
Accepted |
18 |
| Hydrangea quercifolia W. Bartram |
Accepted |
18 |
| Hydrangea robusta Hook. & Thomson |
Accepted |
18 |
| Hydrangea seemannii L. Riley |
Accepted |
18 |
| Hydrangea sikokiana Maxim. |
Accepted |
18 |
| Hydrangea xanthoneura Diels |
Accepted |
18 |
| Hydrangea altissima Wall. |
Synonym of Hydrangea anomala D. Don |
12 |
| Hydrangea radiata Walter |
Synonym of Hydrangea arborescens subsp. radiata (Walter) E. M. McClint. |
18 |
| Hydrangea chinensis |
Synonym of Hydrangea chinensis Maxim. |
18 |
| Hydrangea grossiserrata Engl. |
Synonym of Hydrangea chinensis Maxim. |
18 |
| Hydrangea kawagoeana Koidz. |
Synonym of Hydrangea chinensis Maxim. |
18 |
| Hydrangea yayeyamensis Koidz. |
Synonym of Hydrangea chinensis Maxim. |
18 |
| Hydrangea vestita Wall. |
Synonym of Hydrangea heteromalla D. Don |
18 |
| Hydrangea macrophylla f. hortensia (Regel) Rehder |
Synonym of Hydrangea macrophylla (Thunb.) Ser. |
18 |
| Hydrangea serrata (Thunb.) Ser. |
Synonym of Hydrangea macrophylla subsp. serrata (Thunb.) Makino |
18 |
| Hydrangea anomala subsp. petiolaris (Siebold & Zucc.) E. M. McClint. |
Synonym of Hydrangea petiolaris Siebold & Zucc. |
18 |
| Hydrangea petiolaris S. E. Zucc. |
Synonym of Hydrangea petiolaris Siebold & Zucc. |
18 |
| Hydrangea aspera subsp. robusta (Hook. & Thomson) E. M. McClint. |
Synonym of Hydrangea robusta Hook. & Thomson |
18 |
| Hydrangea liukiuensis Nakai |
Synonym of Hydrangea scandens subsp. liukiuensis (Nakai) E. M. McClint. |
18 |
| Hydrangea luteovenosa Koidz. |
Synonym of Hydrangea scandens subsp. liukiuensis (Nakai) E. M. McClint. |
18 |
| Hydrangea scandens (L.) Ser. |
Synonym of Hydrangea serratifolia (Hook. & Arn.) Phil. |
18 |
| Hydrangea virens (Thunb.) Siebold |
Synonym of Hydrangea serratifolia (Hook. & Arn.) Phil. |
18 |
