| Classification | Cyanobacteria: Cyanophyceae: Nostocales: Rivulariaceae: Calothrix |
| Barcode(s) | 00781936 |
| Collector | Marine Biological Laboratory Botanical Survey of Penikese Island - Marine Algae |
| Country | United States of America |
| State | Massachusetts |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Dukes County: Gosnold: Penikese Island |
| Locality | In cove south of Trunk Neck |
| Date Collected | 1923-07-24 |
| Substrate | on dead eel grass |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/84595a33-0ac6-41c0-b9e1-165026d56551 |
| Harvard University Herbaria Barcode | 00781936 |
| Herbarium | FH |
| Previous ownership | [ex] Herbarium of the Marine Biological Laboratory |
| Family | Rivulariaceae |
| Determination | Calothrix sp. |
| Determination Remarks | [filed under] [label name] [current name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Packet |
| Preparation Method | Dried |
