Rhododendron indicum is an azalea Rhododendron species native to Japan (S & W Honshu, Shikoku, Kyushu, Yakushima).American Rhododendron Society: Description of Rhododendron indicum
Taxonomy It is the type species for the Tsutsusi section and subsection, and was the original Tsutsusi described by Engelbert Kaempfer in Japan in 1712,"Tsutsusi" in Kaempfer, Amoen. Exot. Fasc.: t. 846. 1712 from the Japanese name Kirishima-tsutsuji.
Cultivation There are many cultivars, including the Satsuki azaleas.
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References
Bibliography The Linnaean Plant Name Typification Project: Azalea indica L. Steve Cafferty and Charles E. Jarvis. Typification of Linnaean Plant Names in Ericaceae. Taxon Vol. 51, No. 4 (Nov., 2002), pp. 751-753
External links
Hirsutum.com