Rhododendron tomentosum subsp. subarcticum (Harmaja) G.D.Wallace
Synonym(s):
Rhododendron subarcticum Harmaja
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.195
  • Wallace, G.D. 1992. Ledum in the New Jepson Manual and a New Combination for Ledum in Rhododendron (Ericaceae). in Madroño 39(1): 77, p.77, FlagO