Children (7 direct children, 7 direct and indirect children):
Polystichum aculeatum var. alfaroi
Polystichum aculeatum var. makinoi
Polystichum aculeatum var. ovatopaleaceum
Polystichum aculeatum var. retrosopaleaceum
Polystichum aculeatum var. flavidum
Polystichum aculeatum var. vestitum
Polystichum aculeatum var. travancoricum