| Family | Hydrangeaceae |
| Scientific name | Hydrangea macrophylla (Thunberg ex Murray) Séringe forma normalis (E. H. Wilson) Hara |
| Synonyms | Hydrangea macrophylla (Thunberg ex Murray) Séringe var. normalis E. H. Wilson; Hydrangea macrophylla (Thunberg ex Murray) Séringe subsp. macrophylla var. normalis E. H. Wilson; Hydrangea maritima Haworth-Booth Haworth-Booth |
| Common name | (Japanese common name) gaku-ajisai [fringed Hydrangea] |
| (English common name) none | |
| Distribution | (Japan) Honshu (Boso Peninsula, Miura Peninsula, Izu Islands, Kashima (in Wakayama Prefecture)), Shikoku (Asidzuri Point) |
| (Other nations) none | |
| Chromosomal number | 2n=36 |
| Description | Plants 2m. Leaves waxy 5-15cm. Flowers pale pink or white, flowering in June to July. Deciduous. Shrub. |
| Reference | Hydrangea macrophylla (Thunb.) Ser. subsp. macrophylla |
| June 2007 at Koishikawa Botanical Garden |
June 2007 at Koishikawa Botanical Garden |
June 2007 at Koishikawa Botanical Garden |
| June 2007 at Koishikawa Botanical Garden |
June 2007 at Koishikawa Botanical Garden |
June 2007 at Koishikawa Botanical Garden |
| cv. Maculata | cv. Jogasaki |
| June 2007 at Koishikawa Botanical Garden |
June 2007 at Koishikawa Botanical Garden |