| Family | Ericaceae |
| Scientific name | Rhododendron boninense Nakai |
| Synonyms | none |
| Common name | (Japanese common name) munin tutuji [Izu Islands tutuji (tutuji = Rhododendron plants)] |
| (English common name) none | |
| Distribution | (Japan) Izu Islands (Chichijima Island) |
| (Other nations) none | |
| Chromosomal number | unknown |
| Description | Flowers white. Evergreen. Shrub. |
| Note | Native to Japan. Endangered species in native location. |
| March 2007 at Koishikawa Botanical Garden |
March 2007 at Koishikawa Botanical Garden |