| Classification | Rhodophyta: Rhodomelaceae: Polysiphonia |
| Harvard University Herbaria Barcode(s) | 00934397 |
| Collector | I. M. Lamb |
| Collector number | A-114 |
| Country | United States of America |
| State | Massachusetts |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Barnstable County: Cape Cod |
| Locality | Sippewissett near W. Falmouth |
| Date Collected | 1959-05-23 |
| Habitat | loose floating in a few inches of water at low tide |
| Project | Macroalgae TCN |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/6f050178-f87a-4868-86f1-e5589a941931 |
| Harvard University Herbaria Barcode | 00934397 |
| Herbarium | FH |
| Previous ownership | ex Suffolk University; [ex] Herb. I. Mackenzie Lamb |
| Family | Rhodomelaceae |
| Determination | Polysiphonia nigrescens (Hudson) Greville ex Harvey |
| Determination Remarks | [is label name] |
| Family | Rhodomelaceae |
| Determination | Polysiphonia nigrescens (Hudson) Greville ex Harvey |
| Determined by | Taylor, William Randolph |
| Date Determined | 1959-07-** |
| Determination Remarks | [is filed under name] [is Current name] |
| Annotation Text | Seen and confirmed as a soft lush state of P. nigrescens |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
