Children (17 direct children, 17 direct and indirect children):
Alethopteris ambigua
Alethopteris aquilina
Alethopteris cristata
Alethopteris davreuxi
Alethopteris decurrens
Alethopteris erosa
Alethopteris grandini
Alethopteris lonchita
Alethopteris lonchitica
Alethopteris nervosa
Alethopteris owenii
Alethopteris pennsylvanica
Alethopteris pluckeneti
Alethopteris pteroides
Alethopteris serlii
Alethopteris valida
Alethopteris evansi