| Classification | Lemnaceae: Spirodela | 
| Harvard University Herbaria Barcode(s) | 02315863 | 
| Collector | G. Engelmann | 
| Country | United States of America | 
| State | Missouri | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Missouri: Saint Louis County: Saint Louis (Missouri) | 
| Locality | [no additional data] | 
| Date Collected | 1841-08-** | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/cce32bc8-f3d7-4e16-b1ee-ee3a770dba7d | 
| Harvard University Herbaria Barcode | 02315863 | 
| Herbarium | GH | 
| Family | Lemnaceae | 
| Determination | Spirodela polyrhiza (Linnaeus) Schleiden | 
| Determination Remarks | [filed under] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |