| Name | Clethra williamsii C. B. Robinson |
| Authorship | C. B. Robinson |
| Rank | Species |
| Placed in | Clethra Linnaeus |
| Citation | 1908 Bull. Torrey Bot. Club 35: 73 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Clethra williamsii C. B. Robinson |
| Identification made in | [no date] (1) |