Children (28 direct children, 28 direct and indirect children):
Pisa armata
Pisa tetraodon
Pisa calva
Pisa carinimana
Pisa hirticornis
Pisa lanata
Pisa muscosa
Pisa nodipes
Pisa sanctaehelenae
Pisa santaehelenae
Pisa bicornutus
Pisa biaculeata
Pisa corallina
Pisa gibbsi
Pisa tetradon
Pisa antilocapra
Pisa aries
Pisa aurita
Pisa barbicornis
Pisa cornigera
Pisa monoceros
Pisa planasius
Pisa praelonga
Pisa quadricornis
Pisa serpulifera
Pisa sinope
Pisa triquetra
Pisa trispinosum