Children (5 direct children, 5 direct and indirect children):
Discocactus placentiformis subsp. multicolorispinus
Discocactus placentiformis subsp. alteolens
Discocactus placentiformis subsp. pugionacanthus
Discocactus placentiformis var. alteolens
Discocactus placentiformis var. pugionacanthus