| Name | Rhododendron obtusum f. monstrosum E. H. Wilson |
| Authorship | E. H. Wilson |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Rhododendron obtusum (Lindley) Planchon |
| Citation | 1921 Publ. Arnold Arbor. 9: 42 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Rhododendron obtusum f. monstrosum E. H. Wilson |
| Identification made in | [no date] (1) |