Agave polyacantha Haw., Rev. pl. succ.: 35. 1821 sec. Espejo-Serna & López-Ferrari 2008
- =Agave densiflora Hook. in Bot. Mag. 83: t. 5006. 1857 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Agave chloracantha Salm-Dyck in Bonplandia 7: 93. 1859 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Agave uncinata Jacobi in Hamburger Garten-Blumenzeitung 21: 165. 1865 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Agave muilmannii Jacobi in Abh. Schles. Ges. Vaterl. Cult., Abth. Naturwiss. 1870. Nachtr. 2: 160. 1870 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Agave engelmannii Trel. in Annual Rep. Missouri Bot. Gard. 3: 167-168. t. 55-56. 1892 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Agave flaccifolia A. Berger, Agaven: 42-43. 1915 syn. sec. Espejo-Serna & López-Ferrari 2008