| Name | Fimbristylis aestivalis subsp. major (Trimen) Koyama |
| Authorship | (Trimen) Koyama |
| Rank | Subspecies |
| NomenclaturalStatus | NomLeg |
| Placed in | Fimbristylis aestivalis Vahl |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Fimbristylis aestivalis subsp. major (Trimen) Koyama |
| Identification made in | 2009 (2) |