Rhododendron degronianum Carrière ssp. heptamerum (Maxim.) H.Hara var. kyomaruense (T.Yamaz.) H.Hara
Rhododendron metternichii Siebold & Zucc. var. kyomaruense T.Yamaz.
Rhododendron japonoheptamerum Kitamura var. kyomaruense (T.Yamaz.) T.Yamaz.
Data source(s):
  • Hara, H. 1986. Scientific names of the Rhododendron degronianum group. in Journal of Japanese Botany 61: 245-247 p.246
  • 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