| Classification | Pontederiaceae: Eurystemon | 
| Classification 1 | Pontederiaceae: Heteranthera | 
| Harvard University Herbaria Barcode(s) | 01919039 | 
| Collector | B. C. Tharp | 
| Collector number | 42-9 | 
| Country | United States of America | 
| State | Texas | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Texas: Dimmit County | 
| Locality | 90 mi SW of San Antonio | 
| Date Collected | 1941-06-24 | 
| Project | US and Canada - Mass Digitization | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/ffb48585-e451-475f-b6e2-e7538e92d70d | 
| Harvard University Herbaria Barcode | 01919039 | 
| Herbarium | GH | 
| Previous ownership | [ex] Herbarium of the University of Texas | 
| Family | Pontederiaceae | 
| Determination | Eurystemon mexicanum (S. Watson) Alexander | 
| Determination Remarks | [current name] | 
| Family | Pontederiaceae | 
| Determination | Heteranthera mexicana S. Watson | 
| Determination Remarks | [filed under] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |