

White flowers with dark red anthers.
A cutting of this species was collected in the wild in Iruma City, Saitama prefecture. A seedling was then obtained from this cutting.
| Group: | Species |
| Approximate height: | 1 metres |
| Flowering period(s): | May |
| Country of origin: | Japan |
| Other name(s): | Iruma-no-Kazaguruma |
| Further detail: | Flower diameter: 15 cm. Sepals: 8 |