Coryphantha Cacti of Mexico and Southern USA - Dicht, Reto F.; Luthy, Adrian D.; SpringerLink (Online service) (Berlin, Heidelberg : Springer-Verlag Berlin Heidelberg, 2005)
Keywords: Corypantha -- Mexico -- Identification; Corypantha -- Southwest, New -- Identification; Corypantha -- Texas -- Identification; Life Sciences; Plant Systematics/Taxonomy/Biogeography.; Plant Sciences; Plant Anatomy/Development.