| Name | Euphorbia angusta Engelmann |
| Authorship | Engelmann |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Euphorbia Linnaeus |
| GUID | urn:lsid:ipni.org:names:101282-2 |
| Citation | 1859 Rep. U.S. Mex. Bound., Bot. 189 |
| Holdings | 15 Specimens held in the Harvard University Herbaria identified as Euphorbia angusta Engelmann |
| Identification made in | [no date] (6), 1939 (3), 2008 (6) |