| Classification | Potamogetonaceae: Potamogeton |
| Harvard University Herbaria Barcode(s) | 00022640 |
| Type Status | Lectotype |
| Collector | W. Boott |
| Country | United States of America |
| State | Massachusetts |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Middlesex County |
| Locality | Mystic Pond [now Upper and Lower Mystic Lakes, Arlington/Medford/Winchester] |
| Date Collected | 1865-09-24 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/41851c8d-dcf9-4047-8688-9e4acc7d46c5 |
| Harvard University Herbaria Barcode | 00022640 |
| Herbarium | GH |
| Previous ownership | From Herb. William Boott |
| Family | Potamogetonaceae |
| Determination | Potamogeton spathiformis Tuckerman ex A. Gray |
| Annotation Text | Gray's Man. Ed. 7 |
| Family | Potamogetonaceae |
| Determination | Potamogeton sp. |
| Determination Remarks | [is label name] |
| Family | Potamogetonaceae |
| Determination | Potamogeton gramineus Linnaeus |
| Determined by | Robbins, James Watson |
| Annotation Text | These specimens from Mystic pond are identical with Prof. Tuckerman's from the same locality, labeled by him P. spathiformis but not published. It may be an extreme of P. gramineus of which the var. myriophyllus is another. |
| 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. Cotype material of P gramineus var. spathulaeformis |
| Family | Potamogetonaceae |
| Determination | Potamogeton ×spathuliformis (J. W. Robbins) Morong |
| Determined by | Kaplan, Zdenek |
| Date Determined | 2012 |
| Determination Remarks | [is Current name] |
| Annotation Text | Lectotypus! =P. gramineus x P. illinoensis |
| Family | Potamogetonaceae |
| Type Status | Lectotype |
| Lectotype of | Potamogeton gramineus var. spathuliformis J. W. Robbins |
| Verified by | Kaplan, Zdenek & Reveal, James Lauritz |
| Date Determined | 2012 |
| Determination Remarks | [is filed under name] |
| Annotation Text | Lectotype! |
| Taxon Reference | (for Potamogeton gramineus var. spathuliformis J. W. Robbins) Manual (Gray), ed. 5 1867. 487. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
