| Classification | Potamogetonaceae: Potamogeton |
| Barcode(s) | 00022643 |
| Type Status | Isotype |
| Collector | C. B. Hellquist & C. T. Philbrick |
| Collector number | 15540 |
| Country | United States of America |
| State | Michigan |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Michigan: Presque Isle County |
| Locality | Stream between Lower Barnhart Lake and Lake Nettie on the south side of County Route 638, ca. 3 miles southeast of Millersburg, Case Township |
| Date Collected | 1985-08-16 |
| Container | Flora of Michigan |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/cd897f5f-85a8-4a90-8c26-c67e8374d061 |
| Harvard University Herbaria Barcode | 00022643 |
| Herbarium | GH |
| Family | Potamogetonaceae |
| Type Status | Isotype |
| Isotype of | Potamogeton ×haynesii Hellquist & G. E. Crow |
| Verified by | Reveal, James Lauritz & Kaplan, Zdenek |
| Date Determined | 2012 |
| Determination Remarks | [filed under] |
| Annotation Text | Isotype! |
| Taxon Reference | (for Potamogeton ×haynesii Hellquist & G. E. Crow) Brittonia 1986. 38: 415. |
| Family | Potamogetonaceae |
| Determination | Potamogeton ×haynesii Hellquist & G. E. Crow |
| Determination Remarks | [label name] [current name] |
| Annotation Text | Isotype |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
