| Name | Carex borneensis f. angustifrons Kükenthal |
| Authorship | Kükenthal |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Carex borneensis C. B. Clarke |
| Citation | 1940 Bull. Jard. Bot. Buitenzorg ser. 3, 16: 320 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Carex borneensis f. angustifrons Kükenthal |
| Identification made in | [no date] (1) |