| Name | Calamus siphonospathus Martius ex Walpers |
| Authorship | Martius ex Walpers |
| Rank | Species |
| Placed in | Calamus Linnaeus |
| Contains | Calamus siphonospathus var. sublaevis Beccari |
| Remarks | [confirmed] [imported from GBIF] |
| Citation | 1852 Ann. Bot. Syst. [Walpers] 3: 491 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Calamus siphonospathus Martius ex Walpers |
| Identification made in | [no date] (2) |