| Name | Zanthorhiza simplicissima Marshall |
| Authorship | Marshall |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Zanthorhiza |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Zanthorhiza simplicissima Marshall |
| Identification made in | [no date] (1), 2010 (2) |