Rhododendron degronianum Carrière ssp. heptamerum (Maxim.) H.Hara var. hondoense (Nakai) H.Hara
Synonym(s):
Rhododendron metternichii Siebold & Zucc. var. hondoense Nakai
Rhododendron japonoheptamerum Kitam. var. hondoense (Nakai) Kitam.
Rhododendron degronianum Carrière ssp. hondoense Nakai
Rhododendron ? degronianum Carrière ssp. hondoense Nakai
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
  • Hara, H. 1986. Scientific names of the Rhododendron degronianum group. in Journal of Japanese Botany 61: 245-247 p.246