| Name | Tabernaemontana macrocalyx Müller Arg. |
| Authorship | Müller Arg. |
| Rank | Species |
| Placed in | Tabernaemontana Linnaeus |
| Citation | 1860 Linnaea 30: 403 |
| Holdings | 14 Specimens held in the Harvard University Herbaria identified as Tabernaemontana macrocalyx Müller Arg. |
| Identification made in | 1981 (1), 1986 (1), 1989 (1), 1991 (2), 1992 (8), 2023 (1) |