| Classification | Potamogetonaceae: Potamogeton |
| Harvard University Herbaria Barcode(s) | 00022641 |
| Type Status | Syntype |
| Collector | E. Tuckerman |
| Country | United States of America |
| State | Massachusetts |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Middlesex County: Medford |
| Container | Plantae Novae Angliae Robbinsianae |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/a599a254-d42b-4ffb-8e24-8952a6e27567 |
| Harvard University Herbaria Barcode | 00022641 |
| Herbarium | GH |
| Family | Potamogetonaceae |
| Type Status | Syntype |
| Syntype of | Potamogeton gramineus var. spathuliformis J. W. Robbins |
| Verified by | Reveal, James Lauritz & Kaplan, Zdenek |
| Date Determined | 2012 |
| Determination Remarks | [filed under] |
| Taxon Reference | (for Potamogeton gramineus var. spathuliformis J. W. Robbins) Manual (Gray), ed. 5 1867. 487. |
| Family | Potamogetonaceae |
| Determination | Potamogeton ×spathuliformis (J. W. Robbins) Morong |
| Determined by | Hanrahan, Danielle |
| Date Determined | 2015-11-** |
| Determination Remarks | [current name] |
| Annotation Text | fide James L. Reveal (BH) & Z. Kaplan (NY) |
| Family | Potamogetonaceae |
| Determination | Potamogeton gramineus var. spathuliformis J. W. Robbins |
| Determined by | Ogden, Eugene Cecil |
| Date Determined | 1942 |
| Annotation Text | P. gramineus L. x illinoensis Morong, Isotype |
| Family | Potamogetonaceae |
| Determination | Potamogeton gramineus var. spathuliformis J. W. Robbins |
| Determination Remarks | [label name] |
| Annotation Text | P. spathiformis Tuckerman in herb. |
| Family | Potamogetonaceae |
| Determination | Potamogeton spathiformis Tuckerman ex A. Gray |
| Annotation Text | Gray's Man. Ed. 7 |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
