Children (10 direct children, 10 direct and indirect children):
Ferocactus acanthodes var. eastwoodiae
Ferocactus acanthodes var. acanthodes
Ferocactus acanthodes var. lecontei
Ferocactus acanthodes subsp. eastwoodiae
Ferocactus acanthodes subsp. lecontei
Ferocactus acanthodes subsp. rostii
Ferocactus acanthodes subsp. tortulispinus
Ferocactus acanthodes var. johnstonianus
Ferocactus acanthodes var. rostii
Ferocactus acanthodes var. tortulispinus