Children (33 direct children, 33 direct and indirect children):
Hydnophora rigida
Hydnophora pilosa
Hydnophora grandis
Hydnophora bonsai
Spine coral
Hydnophora microconos
Spine coral
Hydnophora exesa
Spine coral
Hydnophora columellata
Hydnophora gyrosa
Hydnophora aurorae
Clavarina
Hydnophora aconus
Hydnophora astraeoides
Hydnophora blancoensis
Hydnophora crassa
Hydnophora danae
Hydnophora demidoffi
Hydnophora demodovii
Hydnophora elongata
Hydnophora grandiconus
Hydnophora gregoryi
Hydnophora hemisphaerica
Hydnophora hubbardi
Hydnophora hydnophyllioides
Hydnophora kossmati
Hydnophora latefundata
Hydnophora longiconus
Hydnophora maliriensis
Hydnophora multilamellosa
Hydnophora parviconus
Hydnophora plana
Hydnophora rapulum
Hydnophora rudis
Hydnophora styriana