| Classification | Euphorbiaceae: Euphorbia |
| Classification 1 | Euphorbiaceae: Chamaesyce |
| Classification 2 | Euphorbiaceae: Euphorbia |
| Harvard University Herbaria Barcode(s) | 00047645 |
| Type Status | Isolectotype |
| Collector | C. Wright |
| Collector number | 1828 |
| Country | United States of America |
| State | Texas |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Texas: Val Verde County |
| Locality | N. Mex. [camp at Big Bend of the San Pedro] |
| Date Collected | 1851-05-21 |
| Habitat | [Rocky bluffs] |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/e50dbdee-0f14-4558-bbd7-c3f05685be6a |
| Harvard University Herbaria Barcode | 00047645 |
| Herbarium | GH |
| Previous ownership | Ex Herb. John A. Lowelll; Transferred from the Boston Society of Natural History to GH, Oct. 2, 1941 |
| Family | Euphorbiaceae |
| Determination | Euphorbia angusta Engelmann |
| Determination Remarks | [is label name] |
| Family | Euphorbiaceae |
| Determination | Chamaesyce angusta (Engelmann) Small |
| Determined by | W. T. Kittredge (A/GH) |
| Date Determined | 2008 |
| Determination Remarks | [is Current name] |
| Family | Euphorbiaceae |
| Type Status | Isolectotype |
| Isolectotype of | Euphorbia angusta Engelmann |
| Verified by | W. T. Kittredge (A/GH) |
| Date Determined | 2008 |
| Determination Remarks | [LT: MO] |
| Taxon Reference | (for Euphorbia angusta Engelmann) Rep. U.S. Mex. Bound., Bot. 1859. 189. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
