Children (12 direct children, 117 direct and indirect children):
Scleronephthya
(tree size 9)
Siphonogorgia
(tree size 54)
Nidaliopsis
(tree size 5)
Nidalia
(tree size 19)
Pieterfaurea
(tree size 5)
Nephthyigorgia
(tree size 5)
Orlikia
(tree size 1)
Chironephthya
(tree size 5)
Agaricoides
(tree size 2)
Nidaliinae
Siphonogorgiinae
Stereacanthia