| Name | Euphorbia arkansana Engelmann & A. Gray |
| Authorship | Engelmann & A. Gray |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Euphorbia Linnaeus |
| Contains | Euphorbia arkansana var. atrosemina Norton Euphorbia arkansana var. missouriensis Norton |
| GUID | urn:lsid:ipni.org:names:101301-2 |
| Citation | 1845 Boston J. Nat. Hist. 5: 261 |
| Holdings | 12 Specimens held in the Harvard University Herbaria identified as Euphorbia arkansana Engelmann & A. Gray |
| Identification made in | [no date] (4), 1899 (6), 2008 (2) |