| Name | Hornstedtia irosinensis Elmer |
| Authorship | Elmer |
| Rank | Species |
| Placed in | Hornstedtia Retzius |
| Citation | 1919 Leafl. Philipp. Bot. viii. 2981 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Hornstedtia irosinensis Elmer |
| Identification made in | 2023 (2) |