| Name | Phlox diffusa subsp. scleranthifolia (Rydberg) Wherry |
| Authorship | (Rydberg) Wherry |
| Rank | Subspecies |
| Placed in | Phlox diffusa Bentham |
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Phlox diffusa subsp. scleranthifolia (Rydberg) Wherry |
| Identification made in | [no date] (10) |