| Classification | Haloragaceae: Myriophyllum | 
| Harvard University Herbaria Barcode(s) | 01628007 | 
| Collector | B. C. Tharp | 
| Country | United States of America | 
| State | Texas | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Texas: Matagorda County | 
| Locality | [no additional data] | 
| Date Collected | 1939-04-07 | 
| Project | US and Canada - Mass Digitization | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/abcf689f-eb7e-42ee-b9dc-73b93cf7e601 | 
| Harvard University Herbaria Barcode | 01628007 | 
| Herbarium | GH | 
| Previous ownership | [ex] Herbarium of The University of Texas | 
| Family | Haloragaceae | 
| Determination | Myriophyllum pinnatum (Walter) Britton | 
| Determined by | E. N. Nelson & R. W. Couch | 
| Date Determined | 1985 | 
| Determination Remarks | [filed under] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |