| Classification | Asteraceae |
| Classification 1 | Asteraceae: Parthenium |
| Harvard University Herbaria Barcode(s) | 00010901 |
| Type Status | Holotype |
| Collector | R. M. Stewart |
| Collector number | 1662 |
| Country | Mexico |
| State | Coahuila |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Coahuila |
| Locality | Mesa Grande, high mesas 40 km. northwest of Hacienda de la Encantada |
| Date Collected | 1941-09-14 |
| Habitat | In meadows |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/6c4c10c9-0919-4f9f-9888-541239806170 |
| Harvard University Herbaria Barcode | 00010901 |
| Herbarium | GH |
| Family | Asteraceae |
| Determination | Parthenium Linnaeus |
| Determination Remarks | [is label name] |
| Family | Asteraceae |
| Determination | Parthenium confertum var. confertum |
| Determined by | R. C. Rollins |
| Date Determined | 1947 |
| Determination Remarks | Written on sheet |
| Family | Asteraceae |
| Determination | Parthenium confertum var. divaricatum Rollins |
| Determined by | R. C. Rollins |
| Date Determined | 1950-02-** |
| Determination Remarks | [is Current name] |
| Annotation Text | Type; var. nov. |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Parthenium confertum var. divaricatum Rollins |
| Verified by | V. M. Bates (A/GH) |
| Date Determined | 1983 |
| Taxon Reference | (for Parthenium confertum var. divaricatum Rollins) Contr. Gray Herb. 1950. 172: 46. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
