Rhododendron augustinii Hemsl. ssp. hardyi (Davidian) Cullen
Rhododendron hardyi Davidian
Rhododendron augustinii Hemsl. forma hardyi (Davidian) R.C.Fang
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.91
  • 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.110