Rhododendron siderophyllum is a rhododendron species native to Guizhou, Sichuan and Yunnan, China, where it grows at altitudes of . It is a shrub that grows to in height, with leaves that are elliptic or elliptic-lanceolate, long by wide. Flowers range from white to pink to pale purple or red. It is placed in section Rhododendron.
References
"Rhododendron siderophyllum", Franchet, J. Bot. (Morot). 12: 262. 1898. Flora of China Hirsutum.com