Rhododendron dichroanthum Diels ssp. scyphocalyx (Balf.f. & Forrest) Cowan
Rhododendron scyphocalyx Balf.f. & Forrest
Rhododendron herpesticum Balf.f. & Kingdon-Ward
Rhododendron torquatum Balf.f. & Farrer
Rhododendron dichroanthum Diels ssp. herpesticum (Balf.f. & Kingdon-Ward) Cowan
Rhododendron dichroanthum Diels var. scyphocalyx (Balf.f. & Forrest) T.L.Ming
Data source(s):
  • Cowan, J.M. 1940. Rhododendrons of the Rh. sanguineum Alliance. in Notes from the Royal Botanic Garden Edinburgh 20: 55-91 p.88
  • 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