| Name | Cyperus calcaratus Nees, S. Watson & J. M. Coulter |
| Authorship | Nees, S. Watson & J. M. Coulter |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Cyperus Linnaeus |
| Citation | 1890 Manual (Gray), ed. 6 p. 570 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Cyperus calcaratus Nees, S. Watson & J. M. Coulter |
| Identification made in | [no date] (1), 1978 (1) |