Children (15 direct children, 17 direct and indirect children):
Pterocactus reticulatus
Pterocactus tuberosus
(tree size 1)
Pterocactus valentinii
Pterocactus gonjianii
Pterocactus araucanus
Pterocactus australis
Pterocactus megliolii
Pterocactus fischeri
Pterocactus hickenii
Pterocactus kuntzei
(tree size 1)
Pterocactus skottsbergii
Pterocactus pumilus
Pterocactus neuquensis
Pterocactus valentini
Pterocactus marenae