Agave shawii Engelm. subsp. shawii in Trans. Acad. Sci. St. Louis 3: 314-316. t. 2-3. 1875 sec. Espejo-Serna & López-Ferrari 2008
- =Agave orcuttiana Trel. in Annual Rep. Missouri Bot. Gard. 22: 47. t. 22. 1911 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Agave pachyacantha Trel. in Annual Rep. Missouri Bot. Gard. 22: 48-49. t. 27-28. 1911 syn. sec. Espejo-Serna & López-Ferrari 2008