| Name | Cyperus sumatranus (Retzius) T. Koyama |
| Authorship | (Retzius) T. Koyama |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Cyperus Linnaeus |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Cyperus sumatranus (Retzius) T. Koyama |
| Identification made in | 2009 (1) |