| Name | Philactis nelsonii (Greenman) Blake |
| Authorship | (Greenman) Blake |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Philactis |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Philactis nelsonii (Greenman) Blake |
| Identification made in | 1968 (1) |