| Classification | Rhodophyta: Rhodomelaceae: Polysiphonia |
| Harvard University Herbaria Barcode(s) | 00909441 |
| Collector | F. S. Collins |
| Collector number | 1847 |
| Country | United States of America |
| State | Maine |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Maine: Hancock County: Mount Desert Island |
| Locality | [data not captured] |
| Date Collected | 1890-07-22 |
| Project | Macroalgae TCN |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/b3494843-4b80-4b42-9801-f9aad6548b50 |
| Harvard University Herbaria Barcode | 00909441 |
| Herbarium | NEBC |
| Family | Rhodomelaceae |
| Determination | Polysiphonia nigrescens (Hudson) Greville ex Harvey |
| Determination Remarks | [is filed under name] [is Current name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
