Agave petrophila García-Mend. & E. Martínez Agave petrophila García-Mend. & E. Martínez in Sida 18: 627. 1998 sec. García-Mendoza 2011=Agave gracilis García-Mend. & E. Martínez in Sida 18: 227-230. 1998 syn. sec. Espejo-Serna & López-Ferrari 2008