| Classification | Euphorbiaceae: Euphorbia |
| Harvard University Herbaria Barcode(s) | 00047793 |
| Type Status | Isotype |
| Collector | L. R. Stanford, K. L. Retherford, S. E. Retherford & R. D. Northcraft |
| Collector number | 220 |
| Country | Mexico |
| State | Coahuila |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Coahuila |
| Locality | 9 km south of Parras on Sierras Negras |
| Georeference | 25.45, -103.15 Method: Unknown |
| Date Collected | 1941-07-03 |
| Elevation | 2400 m |
| Habitat | Scrubby woodland association of Pine, Juniper, Oaks, heavily grazed by goats. |
| Container | Plants of Mexico: State of Coahuila |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/1a802337-b9db-4d1a-b896-0164edc1495a |
| Harvard University Herbaria Barcode | 00047793 |
| Herbarium | GH |
| Family | Euphorbiaceae |
| Determination | Euphorbia longecornuta S. Watson |
| Determination Remarks | [is label name] |
| Family | Euphorbiaceae |
| Type Status | Isotype |
| Isotype of | Euphorbia mcvaughiana M. C. Johnston |
| Taxon Reference | (for Euphorbia mcvaughiana M. C. Johnston) Wrightia 1975. 5: 123. |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
