| Name | Euphorbia subreniforme S. Watson |
| Authorship | S. Watson |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Euphorbia Linnaeus |
| Citation | 1886 Proc. Amer. Acad. Arts 21: 439 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Euphorbia subreniforme S. Watson |
| Identification made in | [no date] (2), 1992 (1) |