Children (12 direct children, 15 direct and indirect children):
Mortonia australis
Mortonia utahensis
Utah mortonia
Mortonia diffusa
Mortonia greggii
Gregg's saddlebush
Mortonia hidalgensis
Mortonia palmeri
Mortonia sempervirens
(tree size 2)
Rio grande saddlebush
Mortonia latisepala
Mortonia aspera
Mortonia effusa
Mortonia scaberrima
Mortonia scabrella
(tree size 1)
Rio grande saddlebush