| Name | Euphorbia umbellulata var. major Millspaugh |
| Authorship | Millspaugh |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Euphorbia umbellulata Engelmann |
| GUID | urn:lsid:ipni.org:names:102056-2 |
| Citation | 1889 Bull. Torrey Bot. Club 16: 65 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Euphorbia umbellulata var. major Millspaugh |
| Identification made in | [no date] (2) |
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