Children (10 direct children, 14 direct and indirect children):
Humboldtia decurrens
Humboldtia laurifolia
Humboldtia bourdillonii
Humboldtia unijuga
(tree size 2)
Humboldtia vahliana
Humboldtia brunonis
(tree size 2)
Humboldtia trijuga
Humboldtia africana
Humboldtia sanjappae
Humboldtia tripetala