| Name | Phlox douglasii var. diffusa (Bentham) A. Gray |
| Authorship | (Bentham) A. Gray |
| Rank | Variety |
| Placed in | Phlox douglasii Hooker |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Phlox douglasii var. diffusa (Bentham) A. Gray |
| Identification made in | 1922 (1) |
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