Korean Rhododendron

"Rhododendron mucronulatum", the Korean rhododendron or Korean rosebay, is a rhododendron species native to Korea, Mongolia, Russia, and parts of northern China. It is a deciduous shrub that grows to 1–2 m in height, with elliptic or elliptic-lanceolate leaves, 3–7 cm long by 1–3.5 cm wide.