| Classification | Pontederiaceae: Heteranthera | 
| Harvard University Herbaria Barcode(s) | 01919102 | 
| Collector | C. B. Hellquist | 
| Collector number | 9379 | 
| Country | United States of America | 
| State | Michigan | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Michigan: Cheboygan County | 
| Locality | South Fishtail Bay-Douglas Lake, University of Michigan Biological Station. Sec. 33, T36N, R3W | 
| Date Collected | 1974-06-11 | 
| Habitat | alkalinity 97.5 mg/l | 
| Container | Flora of Michigan | 
| Project | US and Canada - Mass Digitization | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/605e32d7-3a79-441b-93f8-f24155e9ac78 | 
| Harvard University Herbaria Barcode | 01919102 | 
| Herbarium | GH | 
| Previous ownership | Ex Herbarium of Boston State College; Transferred from Massachusetts College of Liberal Arts Herbarium (NASC) | 
| Family | Pontederiaceae | 
| Determination | Heteranthera dubia MacMillan | 
| Determination Remarks | [filed under] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |