| Name | Euphorbia portulana S. Watson |
| Authorship | S. Watson |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Euphorbia Linnaeus |
| GUID | urn:lsid:ipni.org:names:101904-2 |
| Citation | 1889 Proc. Amer. Acad. Arts 24: 73 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Euphorbia portulana S. Watson |
| Identification made in | [no date] (1), 1939 (1) |