| Classification | Euphorbiaceae: Euphorbia |
| Harvard University Herbaria Barcode(s) | 00047799 |
| Type Status | Possible Type |
| Collector | Edw. Palmer |
| Collector number | 412 |
| Country | Mexico |
| Geography | North America: North America (CA, US, MX) (Region): Mexico |
| Locality | Island of San Pedro Martin, Gulf of California |
| Date Collected | 1887-10-** |
| Container | Flora of Lower California |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/1689bdd7-fe6f-494b-a764-84238af44f43 |
| Harvard University Herbaria Barcode | 00047799 |
| Herbarium | GH |
| Family | Euphorbiaceae |
| Type Status | Possible Type |
| Possible Type of | Euphorbia petrina S. Watson |
| Taxon Reference | (for Euphorbia petrina S. Watson) Proc. Amer. Acad. Arts 1889. 24: 75. |
| Family | Euphorbiaceae |
| Determination | Euphorbia petrina S. Watson |
| Determined by | L.C. Wheeler |
| Date Determined | 1934 |
| Determination Remarks | [current name] |
| Family | Euphorbiaceae |
| Determination | Euphorbia petrina S. Watson |
| Determination Remarks | [label name] |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
