Children (6 direct children, 10 direct and indirect children):
Anulocaulis leiosolenus
(tree size 4)
Southwestern ringstem
Anulocaulis annulatus
Valley ringstem
Anulocaulis eriosolenus
Big bend ringstem
Anulocaulis reflexus
Texas ringstem
Anulocaulis gypsogenus
Anulocaulis hintoniorum