| Name | Aspidosperma williamii Duarte |
| Authorship | Duarte |
| Rank | Species |
| Placed in | Aspidosperma Martius & Zuccarini |
| Citation | 1972 Acta Amazonica 2: 29 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Aspidosperma williamii Duarte |
| Identification made in | 1999 (3) |