| Classification | Euphorbiaceae: Euphorbia |
| Harvard University Herbaria Barcode(s) | 00047803 |
| Type Status | Holotype |
| Collector | T. B. MacDougall |
| Collector number | 1 |
| Country | Mexico |
| Geography | North America: North America (CA, US, MX) (Region): Mexico |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/adbbaab7-ee0b-4edb-8ab7-1f741c3c4a23 |
| Harvard University Herbaria Barcode | 00047803 |
| Herbarium | A |
| Family | Euphorbiaceae |
| Determination | Euphorbia pteroneura var. macdougalliana Croizat |
| Determination Remarks | [is label name] |
| Family | Euphorbiaceae |
| Determination | Euphorbia pteroneura var. macdougalliana Croizat |
| Determined by | V.W. Steinmann |
| Date Determined | 2000 |
| Determination Remarks | [is Current name] |
| Family | Euphorbiaceae |
| Type Status | Holotype |
| Holotype of | Euphorbia pteroneura var. macdougalliana Croizat |
| Verified by | M. J. Huft |
| Date Determined | 1992 |
| Taxon Reference | (for Euphorbia pteroneura var. macdougalliana Croizat) Desert Pl. Life 1943. 15: 23. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
| Item Remarks | "cutting received from S.J. Alexander, N.Y. Bot. Gard. 1941" |
