| Classification | Rhodophyta: Rhodomelaceae: Polysiphonia |
| Harvard University Herbaria Barcode(s) | 00858056 |
| Collector | J. Schiller |
| Country | Germany |
| State | Schleswig-Holstein |
| Geography | Europe: Europe (Region) (Region): Germany: Schleswig-Holstein |
| Locality | Nordsee: Insel Helgoland |
| Date Collected | 1925-07-** |
| Project | Macroalgae TCN |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/d5eb1912-98ab-4c61-9049-44055e241814 |
| Harvard University Herbaria Barcode | 00858056 |
| Herbarium | FH |
| Exsiccata | Algae Marinae Exsiccatae Number 304 |
| Family | Rhodomelaceae |
| Determination | Polysiphonia nigrescens (Hudson) Greville ex Harvey |
| Determined by | Schiffner, Victor Felix |
| Determination Remarks | [is filed under name] [is Current name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
