| Classification | Euphorbiaceae: Euphorbia |
| Harvard University Herbaria Barcode(s) | 00047691 |
| Type Status | Isosyntype |
| Collector | Edw. Palmer |
| Collector number | 451 |
| Country | United States of America |
| State | California |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: California: San Diego County |
| Locality | Cuyamaca Mountains; Talley's [Ranch] |
| Date Collected | 1875 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/b971a01c-f040-4af8-80bc-ed9b49d8a8c7 |
| Harvard University Herbaria Barcode | 00047691 |
| Herbarium | GH |
| Family | Euphorbiaceae |
| Type Status | Isosyntype |
| Isosyntype of | Euphorbia hirtula Engelmann |
| Taxon Reference | (for Euphorbia hirtula Engelmann) Bot. California 1880. 2: 74. |
| Family | Euphorbiaceae |
| Determination | Euphorbia serpyllifolia var. hirtula (Engelmann) L. C. Wheeler |
| Determined by | L. C. Wheeler |
| Date Determined | 1939 |
| Determination Remarks | [current name] |
| Family | Euphorbiaceae |
| Determination | Euphorbia hirtula Engelmann |
| Determined by | L. C. Wheeler |
| Date Determined | 1934 |
| Family | Euphorbiaceae |
| Determination | Euphorbia hirtula Engelmann |
| Determination Remarks | Written above collector label |
| Annotation Text | n. sp. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
| Item Remarks | Mounted with Vasey 576 |
