R. decorum

Rhododendron species in subsection Fortunea
Habit: Erect shrub to small tree, height up to 9 m.
Flowers: Openly funnel campanulate, white to pale pink, fragrant.
Leaves: Leaves are glabrous. Size 7 to 30 cm long.
Distribution: Sichuan, Yunnan and North Burma 1800 - 4000 m.

Link to Lists of Seeds sent to ARS
Link to my elepidote crossings Breeding Hardy Rhododendrons in Finland
Link to Rhododendron Garden in Archipelago Forest