| Classification | Euphorbiaceae: Euphorbia |
| Classification 1 | Euphorbiaceae: Chamaesyce |
| Classification 2 | Euphorbiaceae: Euphorbia |
| Harvard University Herbaria Barcode(s) | 00047670 |
| Type Status | Isosyntype |
| Collector | G. Thurber |
| Collector number | 1020 |
| Country | United States of America |
| State | Arizona |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Arizona: Cochise County |
| Locality | Sonora [Wilcox Playa] |
| Date Collected | 1851-09-07 |
| Habitat | Prairies |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/943a821a-85f9-4075-83a2-6aadf7fe0f4d |
| Harvard University Herbaria Barcode | 00047670 |
| Herbarium | GH |
| Previous ownership | Ex Coll. Geo. Thurber |
| Family | Euphorbiaceae |
| Determination | Euphorbia exstipulata Engelmann |
| Determination Remarks | [is label name] |
| Family | Euphorbiaceae |
| Determination | Euphorbia exstipulata Engelmann |
| Determined by | M. J. Huft (OKL) |
| Date Determined | 1980 |
| Annotation Text | SYNTYPE; Lectotype is Wright 1833 at MO |
| Family | Euphorbiaceae |
| Determination | Chamaesyce exstipulata (Engelmann) Rydberg |
| Determination Remarks | [is Current name] |
| Family | Euphorbiaceae |
| Type Status | Isosyntype |
| Isosyntype of | Euphorbia exstipulata Engelmann |
| Verified by | W. T. Kittredge |
| Date Determined | 2008 |
| Taxon Reference | (for Euphorbia exstipulata Engelmann) Rep. U.S. Mex. Bound., Bot. 1859. 189. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
