| Name | Euphorbia subcaerulea var. tresmariae Millspaugh |
| Authorship | Millspaugh |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Euphorbia subcaerulea B. L. Robinson & Greenman |
| GUID | urn:lsid:ipni.org:names:102014-2 |
| Citation | 1899 N. Amer. Fauna 14: 88 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Euphorbia subcaerulea var. tresmariae Millspaugh |
| Identification made in | [no date] (2) |