Cactaceae : with illustrated keys of all tribes, sub-tribes and genera - Marshall, William Taylor 1886-1957; Bock, Thor Methven; Haselton, Scott Edson 1895-1991 (Pasadena, U.S.A. : Abbey Garden Press, 1941)
"Supplementing the work of doctor Briton and Rose, this volume describes all of the acceptable new genera and species since nineteen-nineteen and the changes in classifications necessitated by recent discoveries"--Las funciones del ilustrador y editor fueron determinadas por el catalogador
Keywords: CACTUS; CACTUS -- IDENTIFICACION; CACTUS -- CLASIFICACIÓN