abstract:Rhododendron rigidum (基毛杜鹃) is a rhododendron species native to Sichuan and Yunnan, China, where it grows at altitudes of 2000–3400 meters. It is a shrub that grows to 1–2 m in height, with leaves that are elliptic, oblong elliptic, oblong-lanceolate or oblanceolate, 2.