| Name | Phlox longifolia var. viridis (E. Nelson) Youngberg |
| Authorship | (E. Nelson) Youngberg |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Phlox longifolia Nuttall |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Phlox longifolia var. viridis (E. Nelson) Youngberg |
| Identification made in | [no date] (1) |
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