Children (23 direct children, 226 direct and indirect children):
Hydractinia
(tree size 134)
Clava
(tree size 7)
Solanderia
(tree size 7)
Hydrocorella
(tree size 3)
Podocoryna
(tree size 21)
Parahydractinia
(tree size 1)
Fiordlandia
(tree size 1)
Cnidostoma
(tree size 1)
Stylactaria
(tree size 6)
Bouillonactinia
(tree size 4)
Hydrissa
(tree size 1)
Janaria
(tree size 1)
Schuchertinia
(tree size 7)
Stylactis
(tree size 5)
Cystactinia
(tree size 1)
Podocoryne
(tree size 1)
Psammoactinia
(tree size 1)
Distichozoon
(tree size 1)
Echinochorium
Euhydractinia
Halorhiza
Podocorella
Synhydra