Manfreda planifolia (S. Watson) Rose in Contr. U.S. Natl. Herb. 8: 22. 1903 sec. Espejo-Serna & López-Ferrari 2008
- ≡Agave planifolia S. Watson in Proc. Amer. Acad. Arts 22: 479. 1887 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Polianthes planifolia (S. Watson) Shinn in Sida 2: 337. 1966 syn. sec. Espejo-Serna & López-Ferrari 2008