| Name | Spirostachys occidentalis (S. Watson) S. Watson |
| Authorship | (S. Watson) S. Watson |
| Rank | Species |
| Placed in | Spirostachys Ungern-Sternberg |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Spirostachys occidentalis (S. Watson) S. Watson |
| Identification made in | [no date] (1), 1923 (1) |