Rhododendron dichroanthum subsp. septentrionale 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.114
  • Cowan, J.M. 1940. Rhododendrons of the Rh. sanguineum Alliance. in Notes from the Royal Botanic Garden Edinburgh 20: 55-91, p.87, FlagO