Children (36 direct children, 45 direct and indirect children):
Caligula japonica
Rinaca japonica
Caligula boisduvalii
(tree size 2)
Caligula boisduvali
Caligula anna
(tree size 1)
Caligula cachara
Caligula jonasi
Caligula simla
Caligula bieti
Caligula grotei
Caligula heinrichi
Caligula jonasii
Caligula lindia
(tree size 2)
Caligula manonis
Caligula thibeta
(tree size 4)
Caligula kurimushi
Caligula castanea
Caligula meridionalis
Caligula chinensis
Caligula privata
Caligula regina
Caligula ryukyensis
Caligula salmoni
Caligula sillemi
Caligula chinganensis
Caligula diversa
Caligula tsinlingshanis
Caligula extensa
Caligula yunnana
Caligula fallax
Caligula francki
Caligula fukudai
Caligula arctica
Caligula arisana
Caligula hockingii
Caligula intermediula
Caligula jaintiensis
Caligula kansuensis