| Family | Ericaceae |
| Scientific name | Rhododendron decandrum (Makino) Makino |
| Synonyms | Rhododendron dilatatum Miquel var. decandrum Makino |
| Common name | (Japanese common name) tosa-no-mituba-tutuji [Tosa three leaves tutuji (Tosa = an old name of Kochi Prefecture, tutuji = Rhododendron plants)] |
| (English common name) none | |
| Distribution | (Japan) Honshu (Kinki region), Shikoku, Kyushu |
| (Other nations) none | |
| Chromosomal number | unknown |
| Description | Plants 1-3m. Leaves 4-7cm length. Flowers pink corollas 3-4cm, flowering in March to April. Deciduous. Shrub. |
| Reference | Rhododendron decandrum (Makino) Makino |
| Note | Native to Japan. |
| April 2007 at Nikko Botanical Garden |
April 2007 at Nikko Botanical Garden |
April 2007 at Nikko Botanical Garden |