Caulanthus cooperi (S. Watson) Payson in Ann. Missouri Bot. Gard. 9(3): 293. 1923 sec. Rollins 1993
- ≡Thelypodium cooperi S. Watson in Proc. Amer. Acad. Arts 12: 246. 1877 syn. sec. Rollins 1993
- =Guillenia cooperi (S. Watson) Greene in Leafl. Bot. Observ. Crit. 1(18): 228. 1906 syn. sec. Rollins 1993