| Name | Thelypodium howellii S. Watson |
| Authorship | S. Watson |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Thelypodium Endlicher |
| Contains | Thelypodium howellii var. spectabilis M. Peck |
| GUID | urn:lsid:ipni.org:names:290400-1 |
| Citation | 1886 Proc. Amer. Acad. Arts 21: 445 |
| Holdings | 17 Specimens held in the Harvard University Herbaria identified as Thelypodium howellii S. Watson |
| Identification made in | [no date] (15), 1972 (1), 1984 (1) |