Rhododendron orbiculare Decne. ssp. cardiobasis (Sleumer) D.F.Chamb.
Synonym(s):
Rhododendron cardiobasis Sleumer
Data source(s):
  • Chamberlain, D.F. 1982. A revision of Rhododendron II. Subgenus Hymenanthes. in Notes from the Royal Botanic Garden Edinburgh 39(2): 209-486 p.238