R. keiskei
Species
| Botanical Synonyms |
R. laticostum
(Ingram)
R. subnikomontanum R. trichocalyx (Ingram) |
| Subgenus | Rhododendron |
| Section | Rhododendron |
| Subsection | Triflora |
| In cultivation since | 1908 |
| First Described | 1866 (Miq.) |
| Origin | Japan from Yakushima to Central Japan 600-1850 meter |
| Habitat | terrestrial |
| 10 Year Height | ? |
| Mature Wild Height | 250 cm. (8ft.) |
| Bloom Time | early midseason |
| Flower | widely funnel-shaped |
| Predominant Colour | yellow |
| Leaves | oblong-lanceolate |
| Winter Foliage | evergreen |
| Hardiness | H4 |
| Extra Information | The name 'keiskei' commemorates the Japanese botanist Ito Keisuke (1803-1900). Rh. keiskei is a very variable species. Some specimens from very high altitude are dwarf-rhododendrons like var ozawae (formerly var cordifolia) and its cultivar 'Yaku Fairy' barely 6 inches tall Taller forms can reach as much as 10 feet. There are a lot of cultivar and species names probably all about the same specimen. |
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