| Name | Euphorbia robusta var. interioris Norton |
| Authorship | Norton |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Euphorbia robusta (Engelmann) Small |
| GUID | urn:lsid:ipni.org:names:298914-2 |
| Citation | 1899 N. Amer. Euphorbia 49 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Euphorbia robusta var. interioris Norton |
| Identification made in | 1899 (1), 2012 (1) |
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