| 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) |