Children (16 direct children, 18 direct and indirect children):
Plutonaster agassizi
(tree size 2)
Plutonaster ambiguus
Plutonaster efflorescens
Plutonaster intermedius
Plutonaster bifrons
Plutonaster hikurangi
Plutonaster marginatus
Plutonaster sirius
Plutonaster fragilis
Plutonaster jonathani
Plutonaster keiensis
Plutonaster knoxi
Plutonaster complexus
Plutonaster edwardsi
Plutonaster parelii
Plutonaster subinermis