| Name | Euphorbia retroscabra S. Watson |
| Authorship | S. Watson |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Euphorbia Linnaeus |
| GUID | urn:lsid:ipni.org:names:101949-2 |
| Citation | 1887 Proc. Amer. Acad. Arts 22: 449 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Euphorbia retroscabra S. Watson |
| Identification made in | [no date] (1) |
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