| Name | Calamus rivalis Thwaites |
| Authorship | Thwaites |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Calamus Linnaeus |
| Citation | 1885 J. Bot. 23: 386, 268 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Calamus rivalis Thwaites |
| Identification made in | [no date] (2) |
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