Children (6 direct children, 6 direct and indirect children):
Penstemon heterophyllus var. australis
Penstemon heterophyllus var. heterophyllus
Penstemon heterophyllus var. purdyi
Penstemon heterophyllus subsp. heterophyllus
Penstemon heterophyllus subsp. australis
Penstemon heterophyllus subsp. purdyi