| Classification | Lemnaceae: Spirodela | 
| Harvard University Herbaria Barcode(s) | 00875188 | 
| Collector | R. J. Eaton & C. Schweinfurth | 
| Collector number | 5951 | 
| Country | United States of America | 
| State | Massachusetts | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Middlesex County: Concord | 
| Locality | Concord, near culvert tunnelling B & M RR [Boston & Maine Railroad] embankment, so. of Walden P. [Pond] | 
| Date Collected | 1966-07-16 [16 July 1966] | 
| Habitat | Shallow pool at outlet to bog | 
| Project | New England Vascular Plants TCN | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/37bb87c0-19be-11e6-b5e0-001ec9fd629b | 
| Harvard University Herbaria Barcode | 00875188 | 
| Herbarium | NEBC | 
| Family | Lemnaceae | 
| Determination | Spirodela polyrrhiza (Linnaeus) Schleiden | 
| Determination Remarks | [filed under] [current name] | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |