| Classification | Euphorbiaceae: Euphorbia | 
| Classification 1 | Euphorbiaceae: Chamaesyce | 
| Barcode(s) | 00267446 | 
| Type Status | Isolectotype | 
| Collector | C. Wright | 
| Collector number | 1843 | 
| Country | United States of America | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America | 
| Locality | N. Mex. [Guadalupe Pass] | 
| Date Collected | 1851-10-04 | 
| Habitat | [On mountains] | 
| Remarks | [Date, locality and habitat from Wright's notes for field #706, 2nd coll. Johnston (ms. 1940) states that "Guadalupe Pass is on the Arizona-New Mexico line a few miles north of the Mexican boundary"] | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/0fde47c8-467e-4abe-b2e3-072ce5e546e6 | 
| Harvard University Herbaria Barcode | 00267446 | 
| Herbarium | GH | 
| Previous ownership | Transferred from the Boston Society of Natural History to GH, Oct. 2, 1941 | 
| Family | Euphorbiaceae | 
| Type Status |  Isolectotype | 
| Isolectotype of |  Euphorbia serrula Engelmann | 
| Verified by | W. T. Kittredge (A/GH) | 
| Date Determined | 2008 | 
| Determination Remarks | [LT: MO] | 
| Taxon Reference | (for  Euphorbia serrula Engelmann) Rep. U.S. Mex. Bound., Bot. 1859. 188. | 
| Family | Euphorbiaceae | 
| Determination |  Chamaesyce serrula (Engelmann) Wooton & Standley | 
| Determined by | W. T. Kittredge (A/GH) | 
| Date Determined | 2008 | 
| Determination Remarks |  [current name] | 
| Family | Euphorbiaceae | 
| Determination |  Euphorbia serrula Engelmann | 
| Determination Remarks |  [label name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |