Rhododendron prinophyllum, the early azalea, is a rhododendron species native to the eastern and southern United States. It is a deciduous shrub that usually grows 4 to 8 feet in height, rarely reaching 15 feet. Flowers are pink.
References
"Rhododendron prinophyllum", Rhododendrons 229 229 1917. The Plant List Hirsutum.com ARS: Rhododendron prinophyllum