Children (7 direct children, 7 direct and indirect children):
Gymnocalycium spegazzinii subsp. sarkae
Gymnocalycium spegazzinii f. unguispinum
Gymnocalycium spegazzinii subsp. armatum
Gymnocalycium spegazzinii subsp. bayrianum
Gymnocalycium spegazzinii subsp. cardenasianum
Gymnocalycium spegazzinii var. punillense
Gymnocalycium spegazzinii subsp. spegazzinii