| Classification | Euphorbiaceae: Euphorbia |
| Classification 1 | Euphorbiaceae: Chamaesyce |
| Harvard University Herbaria Barcode(s) | 00047644 |
| 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/1149a54c-1820-4e0a-80ba-f3fb84ce53c0 |
| Harvard University Herbaria Barcode | 00047644 |
| Herbarium | GH |
| 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. |
| Family | Euphorbiaceae |
| Determination | Chamaesyce angusta (Engelmann) Small |
| Determined by | W. T. Kittredge (A/GH) |
| Date Determined | 2008 |
| Determination Remarks | [current name] |
| Family | Euphorbiaceae |
| Determination | Euphorbia angusta Engelmann |
| Determined by | L. C. Wheeler |
| Date Determined | 1939 |
| Annotation Text | Isotype |
| Family | Euphorbiaceae |
| Determination | Euphorbia angusta Engelmann |
| Determination Remarks | [label name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
