Calochortus venustulus Greene var. venustulus in Pittonia 1: 158-159. 1888 sec. Espejo-Serna & López-Ferrari 2008
- =Calochortus madrensis S. Watson in Proc. Amer. Acad. Arts 23: 283. 1888 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Calochortus venustulus var. madrensis (S. Watson) Reveal & W.J. Hess in Rhodora 74: 351. 1972 syn. sec. Espejo-Serna & López-Ferrari 2008