| Classification | Cyanobacteria: Cyanophyceae: Nostocales: Rivulariaceae: Calothrix | 
| Harvard University Herbaria Barcode(s) | 00989048 | 
| Collector | G. T. Velasquez | 
| Collector number | 3223 | 
| Country | Philippines | 
| State | Sulu | 
| Geography | Asia: Southeast Asia (Region): Philippines: Mindanao: Sulu | 
| Locality | Bungao, Tawi-Tawi, Sulu | 
| Date Collected | 1952-05-12 | 
| Project | Macroalgae TCN | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/24c77719-17cc-41db-8023-e9db5cc74647 | 
| Harvard University Herbaria Barcode | 00989048 | 
| Herbarium | FH | 
| Previous ownership | ex Herbarium of Cryptogamic Botany, University of the Philippines & National Science Development Board | 
| Family | Rivulariaceae | 
| Determination | Calothrix pilosa Harvey ex Bornet & Flahault | 
| Determination Remarks | [filed under] [current name] | 
| Subcollection | Philippine Algae | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |