| Name | Isopterygium tristaniense Dixon |
| Authorship | Dixon |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Isopterygium |
| Citation | 1960 Results Norweg. Sci. Exped. Tristan da Cunha 48: 45 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Isopterygium tristaniense Dixon |
| Identification made in | [no date] (2), 1997 (2) |