Pink Swamp Heath 
Pinkshell Azalea 
Pointleaf Manzanita 
Portuguese Heath 
Prickly Mingimingi 
Psammisia ferruginea 
Pygmy Pipe 
Red Five-Corners 
Red Huckleberry 
Rhododendron burtii 
Rhododendron calendulaceum 
Rhododendron campanulatum 
Rhododendron caucasicum 
Rhododendron crassifolium 
Rhododendron durionifolium sabahense 
Rhododendron facetum 
Rhododendron fauriei 
rhododendron grande 
Rhododendron indicum 
Rhododendron laetum 
Rhododendron simsii 
Rhododendron stenophyllum 
Rhododendron wilkiei 
Rhododendron zoelleri