Carduus nutans var. sporadum Halácsy, Consp. Fl. Graec. 2: 103. 1902
Carduus nutans var. sporadum, Consp. Fl. Graec. 2: 103. 1902
is basionym for Carduus macrocephalus subsp. sporadum in Bot. J. Linn. Soc. 71: 48. 1975
is basionym for Carduus nutans subsp. sporadum in Denkschr. Akad. Wiss. Wien, Math.-Naturwiss. Kl. 105(1): 649. 1944
Carduus nutans var. sporadum, Consp. Fl. Graec. 2: 103. 1902