Rhododendron dendricola Hutch.
Rhododendron atentsiense Hand.-Mazz.
Rhododendron notatum Hutch.
Rhododendron taronense Hutch.
Data source(s):
  • Argent, C.G.C., J. Bond, D.F. Chamberlain, P. Cox & A. Hardy 1997. The Rhododendron Handbook. The Royal Horticultural Society 352, t.16 pp. p.113
  • Hutchinson, J. 1919. The Maddeni Series of Rhododendron. in Notes from the Royal Botanic Garden Edinburgh 12: 1-84 p.60