| Family | Ericaceae |
| Scientific name | Rhododendron indicum (L.) Sweet |
| Synonyms | (Synonyms of Rhododendron indicum (L.) Sweet) Azalea decumbens de Candolle; Azalea breynii Andrews; Azalea danielsiana Paxton; Azalea indica L.; Azalea indica L. var. angustifolia Blume; Azalea indica L. var. lateritia Lindley; Azalea indica L. var. floribunda Blume; Azalea indica L. var. spatulata Blume; Azalea macrantha Bunge; Azalea lateritia hort. ex Andrews; Rhododendron balsaminiflorum Carrière; Rhododendron breynii Planchon; Rhododendron decumbens D. Don apud G. Don; Rhododendron danielsianum Planchon; Rhododendron hannoense Nakai; Rhododendron indicum L. forma lateritium Rehder; Rhododendron indicum L. forma osakazuki Komatsu; Rhododendron indicum L. var. brachytrichum Komatsu; Rhododendron indicum L. var. macranthum Maximovicz; Rhododendron indicum L. var. macranthum Matsumura; Rhododendron lateritia (Lindley) Planchon; Rhododendron lateritium Planchon; Rhododendron lateritium Planchon var. brachytrichum Nakai; Rhododendron macranthum G. Don; Rhododendron sieboldii Miquel; Rhododendron sieboldii Miquel var. serrulatum Miquel |
| Common name | (Japanese common name) otakumi tutuji [Otakumi river tutuji (Otakumi river is locating in Yakushima Island, tutuji = Rhododendron plants)], otakumi satsuki [Otakumi river May flower] |
| (English common name) none | |
| Distribution | (Japan) Kyushu (Uakushima Island) |
| (Other nations) none | |
| Chromosomal number | unknown |
| Description | Flowers orange (purple, pink or white) 3.5-5cm, flowering in May to Jyly. Evergreen. Shrub. |
| Reference | Rhododendron indicum (L.) Sweet |
| Rhododendron indicum (Linnaeus) Sweet | |
| Chromosome numbers and karyotypes of the subgenus Rhododendron | |
| Leaf Morphology of the Rheophyte, Rhododendron indicum f. otakumi (Ericaceae) | |
| Note | Endemic to Japan. |
| June 2007 at Koishikawa Botanical Garden |
June 2007 at Koishikawa Botanical Garden |
June 2007 at Koishikawa Botanical Garden |