Rhododendron bulu Hutch.
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.23
  • Stevenson, J.B. 1932. The species of Rhododendron. in Rhododendron Society Notes 3: 277-287 p.280