| Classification | Asteraceae: Ambrosia |
| Harvard University Herbaria Barcode(s) | 00487983 |
| Collector | I. M. Johnston |
| Collector number | 9282 |
| Country | Mexico |
| State | Coahuila |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Coahuila |
| Locality | Road from Ocampo west over the mountains to Puertecito (via Cuesta de Zozaya) |
| Date Collected | 1941-09-20 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/c4281255-a368-4711-a25a-cb93d546b7fc |
| Harvard University Herbaria Barcode | 00487983 |
| Herbarium | GH |
| Family | Asteraceae |
| Determination | Ambrosia johnstoniorum Henrickson |
| Determined by | Henrickson, James Solberg |
| Date Determined | 1980-05-** |
| Determination Remarks | [filed under] [current name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
