| Classification | Pontederiaceae: Heteranthera |
| Classification 1 | Pontederiaceae: Eurystemon |
| Harvard University Herbaria Barcode(s) | 00255056 |
| Type Status | Isotype, Holotype |
| Collector | Edw. Palmer |
| Collector number | 1324 |
| Country | Mexico |
| State | Coahuila |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Coahuila |
| Locality | Juraz. 100 m. N [north] of Monclova |
| Date Collected | 1890-07-** |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/bb4cacfe-cbd5-479a-9516-130815e741d8 |
| Harvard University Herbaria Barcode | 00255056 |
| Herbarium | GH |
| Family | Pontederiaceae |
| Type Status | Isotype |
| Isotype of | Heteranthera mexicana S. Watson |
| Taxon Reference | (for Heteranthera mexicana S. Watson) Proc. Amer. Acad. Arts 1882-1883. 18: 166. |
| Family | Pontederiaceae |
| Type Status | Holotype |
| Holotype of | Heteranthera mexicana S. Watson |
| Verified by | W. T. Kittredge (GH) |
| Date Determined | 2007-09-07 |
| Taxon Reference | (for Heteranthera mexicana S. Watson) Proc. Amer. Acad. Arts 1882-1883. 18: 166. |
| Family | Pontederiaceae |
| Determination | Eurystemon mexicanum (S. Watson) Alexander |
| Determined by | Alejandro Novelo R. |
| Date Determined | 1993-08-** |
| Determination Remarks | [current name] |
| Family | Pontederiaceae |
| Determination | Heteranthera mexicana S. Watson |
| Determination Remarks | [label name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
