| Name | Phialanthus macrostemon Standley |
| Authorship | Standley |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Phialanthus |
| GUID | urn:lsid:ipni.org:names:192743-2 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Phialanthus macrostemon Standley |
| Identification made in | [no date] (1) |