Agave parrasana A. Berger Agave parrasana A. Berger in Notizbl. Bot. Gart. Berlin-Dahlem 4: 250. 1906 sec. Espejo-Serna & López-Ferrari 2008=Agave wislizenii Engelm. in Trans. Acad. Sci. St. Louis 3: 320-321. 1875 syn. sec. Espejo-Serna & López-Ferrari 2008