| Name | Phyllanthus casticum P. Willemet |
| Authorship | P. Willemet |
| Rank | Species |
| Placed in | Phyllanthus Linnaeus |
| Citation | 1796 Ann. Bot. (Usteri) ed. Usteri 18: 55–56 |
| Holdings | 9 Specimens held in the Harvard University Herbaria identified as Phyllanthus casticum P. Willemet |
| Identification made in | [no date] (9) |