| Name | Phlox douglasii var. longifolia A. Gray |
| Authorship | A. Gray |
| Rank | Variety |
| Placed in | Phlox douglasii Hooker |
| Citation | 1870 Proc. Amer. Acad. Arts 8: 254 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Phlox douglasii var. longifolia A. Gray |
| Identification made in | [no date] (4), 2018 (2) |