Children (13 direct children, 13 direct and indirect children):
Notophyllum frontale
Notophyllum americanum
Notophyllum crypticum
Notophyllum splendens
Notophyllum imbricatum
Notophyllum japonicum
Notophyllum tectum
Notophyllum imajimai
Notophyllum sagamianum
Notophyllum coecum
Notophyllum foliosum
Hesperophyllum
Notophyllum multicirris