| Classification | Potamogetonaceae: Potamogeton | 
| Barcode(s) | 00273586 | 
| Type Status | Possible Isolectotype | 
| Collector | J. W. Robbins | 
| Country | United States of America | 
| State | Massachusetts | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Worcester County | 
| Locality | Uxbridge, Mass | 
| Date Collected | 1852-07-14 [J. 14, 1852] | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/2349b511-0059-45cc-a043-075204b6a460 | 
| Harvard University Herbaria Barcode | 00273586 | 
| Herbarium | GH | 
| Family | Potamogetonaceae | 
| Type Status | Possible Isolectotype | 
| Possible Isolectotype of |  Potamogeton pusillus var. gemmiparus J. W. Robbins | 
| Verified by | Hanrahan, Danielle | 
| Date Determined | 2018-02-** | 
| Determination Remarks |  [filed under] | 
| Annotation Text | Possible Isolectotype | 
| Taxon Reference | (for  Potamogeton pusillus var. gemmiparus J. W. Robbins) Manual (Gray), ed. 5 1867. 489. | 
| Family | Potamogetonaceae | 
| Determination |  Potamogeton pusillus var. gemmiparus J. W. Robbins | 
| Determined by | Haynes, Robert Ralph | 
| Date Determined | 1973 | 
| Determination Remarks |  [current name] | 
| Family | Potamogetonaceae | 
| Determination |  Potamogeton pusillus var. gemmiparus J. W. Robbins | 
| Determined by | Reveal, James Lauritz & Kaplan, Zdenek | 
| Date Determined | 2012 | 
| Annotation Text | Lectotype! | 
| Family | Potamogetonaceae | 
| Determination |  Potamogeton gemmiparus J. W. Robbins ex Morong | 
| Annotation Text | Gray's Man. Ed. 7 | 
| Family | Potamogetonaceae | 
| Determination |  Potamogeton pusillus var. gemmiparus J. W. Robbins | 
| Determination Remarks |  [label name] | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |