Children (18 direct children, 19 direct and indirect children):
Isertia pittieri
Isertia reticulata
Isertia rosea
Isertia scorpioides
Isertia spiciformis
Isertia verrucosa
Isertia coccinea
Isertia wilhelminensis
Isertia haenkeana
(tree size 1)
Isertia hypoleuca
Isertia krausei
Isertia laevis
Isertia longifolia
Isertia parviflora
Isertia psammophila
Isertia pterantha
Isertia spraguei
Isertia bullata