Rhododendron cinnabarinum subsp. xanthocodon (Hutch.) Cullen
Synonym(s):
Rhododendron cinnabarinum var. purpurellum Cowan
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.106
  • Cullen, J. & D.F. Chamberlain 1978. A preliminary synopsis of the genus Rhododendron. in Notes from the Royal Botanic Garden Edinburgh 36: 105-126, p.113, FlagO