| Name | Malacothrix sonchoides (Nuttall) Torrey & A. Gray |
| Authorship | (Nuttall) Torrey & A. Gray |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Malacothrix de Candolle |
| Holdings | 52 Specimens held in the Harvard University Herbaria identified as Malacothrix sonchoides (Nuttall) Torrey & A. Gray |
| Identification made in | [no date] (52) |