Children (23 direct children, 23 direct and indirect children):
Castalia martensi
Castalia ambigua
Castalia schombergiana
Castalia multisulcata
Castalia orinocensis
Castalia stevensi
Castalia quadrata
Castalia acuticosta
Castalia carolinensis
Castalia cordata
Castalia crosseana
Castalia dolabella
Castalia ecarinata
Castalia hanleyana
Castalia inflata
Castalia nehringi
Castalia orbignyi
Castalia ovata
Castalia pazi
Castalia psammoica
Castalia retusa
Castalia turgida
Castalia undosa