Children (14 direct children, 15 direct and indirect children):
Pterozonium spectabile
Pterozonium steyermarkii
Pterozonium paraphysatum
Pterozonium scopulinum
Pterozonium terrestre
Pterozonium brevifrons
Pterozonium elaphoglossoides
Pterozonium lineare
Pterozonium maguirei
Pterozonium cyclophyllum
Pterozonium retroflexum
Pterozonium cyclosorum
Pterozonium tatei
Pterozonium reniforme
(tree size 1)