Children (11 direct children, 11 direct and indirect children):
Phlox drummondii var. tenuis
Drummond's phlox
Phlox drummondii johnstonii
Phlox drummondii mcallisterii
Tharp's phlox
Wilcox's phlox
Phlox drummondii var. littoralis
Phlox drummondii subsp. glabriflora
Phlox drummondii var. tharpii
Phlox drummondii subsp. mcallisteri
Phlox drummondii var. johnstonii