| Name | Phlox drummondii subsp. johnstonii (Wherry) Wherry |
| Authorship | (Wherry) Wherry |
| Rank | Subspecies |
| Placed in | Phlox drummondii Hooker |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Phlox drummondii subsp. johnstonii (Wherry) Wherry |
| Identification made in | [no date] (1) |