| Name | Euphorbia longeramosa S. Watson |
| Authorship | S. Watson |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Euphorbia Linnaeus |
| GUID | urn:lsid:ipni.org:names:101622-2 |
| Citation | 1890 Proc. Amer. Acad. Arts 25: 161 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Euphorbia longeramosa S. Watson |
| Identification made in | [no date] (2) |