| Name | Calamus optimus Beccari | 
| Authorship | Beccari | 
| Rank | Species | 
| Placed in | Calamus Linnaeus | 
| Remarks | [confirmed][imported from GBIF] | 
| Citation | 1902 Nelle Foreste di Borneo 610 | 
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Calamus optimus Beccari | 
| Identification made in | [no date] (3) |