| Family | Ericaceae |
| Scientific name | Rhododendron kaempferi Planchon |
| Synonyms | Rhododendron kaempferi Planchon forma album Nakai; Rhododendron kaempferi Planchon var. lucidusculum (Nakai) Sugimoto; Rhododendron obtusum (Lindley) Planchon var. kaempferi (Planchon) E. H. Wilson; Rhododendron obtusum (Lindley) Planchon var. kaempferi (Planchon) E. H. Wilson forma albiflorum E. H. Wilson; Rhododendron obtusum (Lindley) Planchon var. kaempferi (Planchon) E. H. Wilson forma purpuriflorum T. Yamazaki; Rhododendron scabrum G. Don var. kaempferi (Planchon) Nakai |
| Common name | (Japanese common name) yama-tutuji [mountain tutuji (tutuji = Rhododendron plants)] |
| (English common name) none | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) none | |
| Chromosomal number | unknown |
| Description | Plants 1-4m. Leaves 3-5cm length. Flowers orange, purple or white corollas 4-5cm, flowering in April to June. Hemideciduous. Shrub. |
| Reference | Rhododendron kaempferi Planch. |
| Herbicidal composition and herbicidal processes (US Patent 4552584/1985) | |
| Antifungal polypeptides (US Patent 7306946/2007) | |
| Methods of protecting plants from pathogenic fungi and nematodes (US Patent 7301069/2007) | |
| Plant defensin polynucleotides and methods of use thereof (US Patent 7238781/2007) | |
| Method of breeding azalea (US Patent 20060294616) | |
| Note | Native to Japan. |
| April 2007 at Ushiku Forest Park |
April 2007 at Ushiku Forest Park |
April 2007 at Ushiku Forest Park |
| April 2007 at Tsukuba Botanical Garden |
| cv. Kagaribi | cv. Kagaribi |
| April 2007 at Koishikawa Botanical Garden |
April 2007 at Koishikawa Botanical Garden |