Rhododendron sect. Sciadorhodion is a subsection of subgenus Azaleastrum in the genus Rhododendron. It comprises 16 species of deciduous shrubs native to East Asia and North America.
Taxonomy Plants were previously classified in the genus Menziesia and reclassified within the genus Rhododendron and formally transferred in 2011.Craven, L.A. Diplarche and Menziesia transferred to Rhododendron (Ericaceae). Blumea 56 (1), April 2011, pp. 33-35(3)
Species Image Name Distribution Rhododendron albiflorum British Columbia to northern Oregon and inland to western Alberta to Montana, and ColoradoRhododendron albrechtii Japan (Honshu and Hokkaido) Rhododendron benhallii Japan (Honshu, Shikoku)Rhododendron dilatatum Japan (Honshu).Rhododendron goyozanense Japan (N. Honshu) Rhododendron katsumatae Japan (Honshu)Rhododendron kroniae Japan (Kyushu)Rhododendron menziesii Alaska through the Pacific Northwest to northwestern California and WyomingRhododendron multiflorum Japan (S. Hokkaido, N. & Central Honshu) Rhododendron osuzuyamense Japan (C. Kyushu).Rhododendron pentandrum Sakhalin to JapanRhododendron pilosum United States (S. Pennsylvania to Georgia)Rhododendron quinquefolium Japan (C. Honshu, Shikoku)Rhododendron schlippenbachii S. Russian, Korea, China (Inner Mongolia, Manchuria) and JapanRhododendron vaseyi North CarolinaRhododendron wadanum Japan (C. Honshu) Rhododendron yakushimense Japan (Yakushima)
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