| Classification | Rhodophyta: Rhodomelaceae: Polysiphonia | 
| Harvard University Herbaria Barcode(s) | 00976510 | 
| Collector | I. Holden | 
| Country | United States of America | 
| State | Connecticut | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Connecticut: Fairfield County: Bridgeport | 
| Locality | B'port | 
| Date Collected | 1885-06-28 | 
| Project | Macroalgae TCN | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/1edde141-0f73-47f4-9698-aea275887649 | 
| Harvard University Herbaria Barcode | 00976510 | 
| Herbarium | FH | 
| Previous ownership | ex Boston Society of Natural History; I. Holden Collection | 
| Family | Rhodomelaceae | 
| Determination | Polysiphonia subtilissima Montagne | 
| Determination Remarks | [filed under] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |