Children (7 direct children, 7 direct and indirect children):
Eryngium nudicaule var. bellidifolium
Eryngium nudicaule var. ctenodes
Eryngium nudicaule var. napuliferum
Eryngium nudicaule var. peruvianum
Eryngium nudicaule var. pinnatifidum
Eryngium nudicaule var. typicum
Eryngium nudicaule f. cylindricum