| Name | Rhododendron canescens f. subglabrum Rehder |
| Authorship | Rehder |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Rhododendron canescens (Michaux) Sweet |
| Citation | 1921 Monogr. Azaleas 145 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Rhododendron canescens f. subglabrum Rehder |
| Identification made in | [no date] (1) |