| Name | Phlox diffusa subsp. longistylis Wherry |
| Authorship | Wherry |
| Rank | Subspecies |
| Placed in | Phlox diffusa Bentham |
| Holdings | 51 Specimens held in the Harvard University Herbaria identified as Phlox diffusa subsp. longistylis Wherry |
| Identification made in | [no date] (47), 1939 (2), 1960 (2) |
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