Children (9 direct children, 9 direct and indirect children):
Mammillaria haageana subsp. san-angelensis
Mammillaria haageana conspicua
Mammillaria haageana acultzingensis
Mammillaria haageana meissneri
Mammillaria haageana vaupelii
Mammillaria haageana haageana
Mammillaria haageana subsp. elegans
Mammillaria haageana subsp. schmollii
Mammillaria haageana var. schmollii