Heliocarpus palmeri S. Watson in Proc. Amer. Acad. Arts 21: 420. 1886 sec. Gual 2008
- =Heliocarpus polyandrus S. Watson in Proc. Amer. Acad. Arts 21: 420. 1886 syn. sec. The Plant List 2013
- =Heliocarpus glaber Brandegee in Zoe 5: 209. 1905 syn. sec. The Plant List 2013